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Transcript of 2) {ð % : ° % è ® ѳ‡料1369.pdf3KRQH>8 )D[>8 H PDLO \DPDML W#S PSDW JR MS R5ð S4"@ b7...
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No.1369
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目 次
要 旨 ························································································································ 3
1. はじめに ··················································································································· 4
2. 港湾鋼構造物における集中腐食メカニズムの検証 ··························································· 5
2.1 概要 ··················································································································· 5
2.2 M.L.W.L.付近における集中腐食の実態およびメカニズムの検証 ······································ 5
2.3 鋼材とコンクリート境界部での集中腐食（地際腐食） ··············································· 13
2.4 まとめ ················································································································ 15
3. 海中部における電気防食の効果に関する検証 ································································· 17
3.1 序論 ·················································································································· 17
3.2 長期にわたる電気防食特性の経時変化例 ··································································· 19
3.3 テストピースによる電気防食の効果に関する検証······················································· 21
3.4 実港湾構造物における電気防食の効果の評価 ····························································· 27
3.5 まとめ ················································································································ 30
4. 干満帯付近における電気防食の効果に関する検証 ···························································· 32
4.1 概要 ·················································································································· 32
4.2 実構造物調査による検証 ························································································ 32
4.3 実環境暴露試験による検証 ····················································································· 35
4.4 屋外暴露水槽での暴露試験による検証 ····································································· 37
4.5 まとめ ··············································································································· 40
5. 港湾鋼構造物における電気防食の点検診断に関する検討 ··················································· 42
5.1 概要 ····················································································································· 42
5.2 調査概要 ············································································································ 44
5.3 結果および考察 ··································································································· 44
5.4 まとめ ··············································································································· 47
6. おわりに ····················································································································· 50
付録
付録A 肉厚測定時の素地面調整における削りしろの検証実験
付録B 干満部に位置する鋼材に流出入する電流密度の時間変化（屋外暴露水槽での試験結果）
付録C テストピースによる調査結果（650組）
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C P
Ec
Ea
Ecorr
C
ip
iicorr ip
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C P
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C P
W1 W0T S
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付録 C テストピースによる調査結果（650 組）
3.3.3で実施したテストピース（計 650 組）の調査結果の一覧を以下に示す．
設置前 設置後 設置前 設置後 C P
83.6700 83.4685 83.6890 52.5231 0.081 0.0005 99.4 99.8
84.2288 84.0185 83.3100 53.0466 0.079 0.0005 99.4 99.8
0.0 84.4585 84.0412 84.2960 71.0965 0.041 0.0013 96.8 99.5
-3.0 84.9680 81.5245 85.2769 67.3588 0.056 0.0014 97.5 95.9
-0.5 92.0880 91.9574 92.4399 76.4258 0.121 0.0010 99.2 99.9
-2.75 92.3308 92.2023 92.2632 77.8263 0.109 0.0010 99.1 99.9
-5 92.6574 92.5222 92.4098 77.6298 0.112 0.0010 99.1 99.9
-0.5 92.1415 91.9860 92.2172 77.7955 0.109 0.0010 99.1 99.8
-1.5 92.2722 92.0762 92.6295 80.0167 0.096 0.0010 99.0 99.8
-3 92.2553 92.0906 92.2352 78.7855 0.102 0.0010 99.0 99.8
-0.5 92.3241 92.1253 92.0192 82.4269 0.073 0.0020 97.3 99.8
-4 92.1703 91.8979 92.3095 76.8035 0.118 0.0020 98.3 99.7
-7.5 92.2252 91.9884 92.7187 82.5224 0.077 0.0020 97.4 99.7
83.2395 83.1405 84.6518 62.6547 0.104 0.0005 99.5 99.9
82.5650 82.4533 83.3922 56.1705 0.128 0.0005 99.6 99.9
83.0613 82.8689 83.4840 45.0771 0.181 0.0009 99.5 99.8
83.7234 83.6229 84.9107 40.7928 0.169 0.0004 99.8 99.9
83.0657 82.9619 84.2820 59.1871 0.096 0.0004 99.6 99.9
83.9953 83.8895 83.9902 39.8105 0.169 0.0004 99.8 99.9
2.0 92.7952 92.3163 92.5006 81.0172 0.238 0.0099 95.8 99.5
92.2414 91.9158 92.3040 88.4533 0.051 0.0043 91.6 99.6
92.3172 91.9158 92.0537 85.1578 0.092 0.0056 93.9 99.6
5.0 92.5090 92.3870 92.5732 77.9501 0.121 0.0010 99.2 99.9
5.0 92.9380 92.8169 92.4739 77.0111 0.127 0.0010 99.2 99.9
6.0 92.9053 92.8223 92.9566 76.7854 0.110 0.0010 99.1 99.9
8.0 -0.5 92.5882 92.4299 92.6297 65.7218 0.136 0.0008 99.4 99.8
9.1 92.8874 92.8232 92.8052 65.0489 0.124 0.0003 99.8 99.9
92.1540 91.5388 92.2495 88.8800 0.069 0.0126 81.7 99.3
92.2892 91.6164 92.5411 86.3352 0.127 0.0137 89.2 99.3
92.2678 91.5669 92.0162 86.1203 0.120 0.0143 88.1 99.2
11.7 84.5098 84.1369 84.4387 44.6852 0.137 0.0010 99.3 99.6
柏崎港 6.5 83.4357 83.2069 82.2543 57.4207 0.155 0.0014 99.1 99.7
86.2460 86.0275 86.0847 38.1311 0.208 0.0009 99.6 99.7
84.6883 84.6244 84.8760 47.1380 0.164 0.0003 99.8 99.9
84.2395 84.1245 84.7783 65.3423 0.084 0.0005 99.4 99.9
84.3610 84.2431 81.8044 67.0391 0.064 0.0005 99.2 99.9
7.8 81.7118 81.6272 83.3275 70.9541 0.065 0.0004 99.4 99.9
80.3853 80.1543 84.1162 59.1121 0.094 0.0009 99.0 99.7
83.1088 83.0305 82.4360 57.7870 0.093 0.0003 99.7 99.9
83.8150 83.7126 83.3157 66.1547 0.065 0.0004 99.4 99.9
83.1549 83.0875 82.9230 64.9345 0.068 0.0003 99.6 99.9
83.1964 83.1147 83.9880 44.1292 0.206 0.0004 99.8 99.9
84.2239 84.1463 84.2460 59.2764 0.129 0.0004 99.7 99.9
83.4637 83.3423 84.5736 66.6350 0.093 0.0006 99.4 99.9
82.6745 82.5539 84.4326 70.3564 0.073 0.0006 99.2 99.9
84.1744 84.0785 83.0001 58.2493 0.128 0.0005 99.6 99.9
4新潟港
新潟県
9.3
10.8
7.8
10.6
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3.0
2.0
2 青森県 青森港 5.3
3 福島県
小名浜港
8.6
1 北海道
釧路西港 15.5
苫小牧東港 13.0
腐食速度
（mm/y） 防食
率(%)
防食
効果
(%)防食時(P) 無防食時(C)
番
号都道
府県港・湾名
設置
年数
水深
(m)
質量(g)
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設置前 設置後 設置前 設置後 C P
84.9030 84.7763 85.0470 80.8770 0.182 0.0055 97.0 99.9
83.6006 83.5010 83.8204 78.3339 0.239 0.0043 98.2 99.9
84.4175 84.3840 84.3285 80.4755 0.168 0.0015 99.1 100.0
84.0983 84.0138 84.9578 80.8342 0.180 0.0037 97.9 99.9
84.2944 84.1774 84.7791 79.8571 0.215 0.0051 97.6 99.9
84.0307 83.9702 84.6130 79.1600 0.238 0.0026 98.9 99.9
84.4988 84.4029 83.9692 80.3788 0.157 0.0042 97.3 99.9
84.7361 84.6591 84.0683 80.5788 0.152 0.0034 97.8 99.9
84.6919 84.5528 83.9168 79.2469 0.204 0.0061 97.0 99.8
84.7699 84.7298 84.2824 81.8292 0.107 0.0017 98.4 100.0
84.7141 84.6454 84.8243 81.7568 0.134 0.0030 97.8 99.9
83.6087 83.5200 84.6266 79.8573 0.171 0.0032 98.1 99.9
83.6843 83.6361 83.7615 78.0770 0.204 0.0017 99.2 99.9
84.2307 84.1636 84.0258 79.3505 0.168 0.0024 98.6 99.9
83.7501 83.7226 84.0201 78.9483 0.182 0.0010 99.4 100.0
84.2654 84.1758 83.3409 80.1244 0.115 0.0032 97.2 99.9
84.0303 83.9926 83.9654 80.1729 0.136 0.0014 99.0 100.0
83.6822 83.6483 83.4694 79.7157 0.135 0.0012 99.1 100.0
84.1337 84.0815 83.5156 80.2450 0.117 0.0009 99.2 99.9
84.7544 84.6788 84.5523 80.4234 0.148 0.0027 98.2 99.9
83.6459 83.6134 83.7200 77.4546 0.225 0.0012 99.5 100.0
84.7113 84.6750 84.0983 78.3246 0.207 0.0013 99.4 100.0
84.2339 84.0893 84.3344 80.9821 0.153 0.0066 95.7 99.8
84.3778 84.3298 84.3289 79.8221 0.206 0.0022 98.9 99.9
83.6045 83.5279 85.0859 80.2181 0.222 0.0035 98.4 99.9
84.1438 84.0918 84.1469 80.4252 0.170 0.0024 98.6 99.9
83.8659 83.6837 84.2941 80.2713 0.183 0.0083 95.5 99.8
84.2464 84.2012 84.0565 79.4415 0.022 0.0021 90.2 99.9
84.6661 84.6041 84.0669 80.5179 0.162 0.0028 98.3 99.9
84.4734 84.4150 84.3091 80.6281 0.168 0.0027 98.4 99.9
83.3795 83.3284 84.6415 81.0060 0.166 0.0023 98.6 99.9
83.0584 83.0052 84.4494 81.6194 0.129 0.0024 98.1 99.9
83.5263 83.4687 84.3681 80.7051 0.167 0.0026 98.4 99.9
84.1498 84.1105 83.8196 80.8617 0.135 0.0018 98.7 100.0
82.3457 82.2520 82.1527 78.3925 0.174 0.0043 97.5 99.9
81.8878 81.8262 82.1816 77.7664 0.204 0.0028 98.6 99.9
82.3934 82.3242 82.2562 77.2661 0.230 0.0032 98.6 99.9
82.0482 82.0065 82.3290 77.9434 0.203 0.0019 99.1 99.9
82.0970 82.0071 82.3960 78.2745 0.190 0.0042 97.8 99.9
83.4467 83.3939 82.3708 77.5178 0.224 0.0024 98.9 99.9
82.5727 82.5053 82.2698 77.4697 0.222 0.0031 98.6 99.9
81.9266 81.8479 82.2432 77.4422 0.222 0.0036 98.4 99.9
82.0534 81.9354 82.1375 78.9199 0.149 0.0054 96.4 99.9
82.4228 82.3739 82.2989 78.9604 0.154 0.0023 98.5 99.9
82.1680 82.0970 82.5461 78.9914 0.164 0.0033 98.0 99.9
82.1323 82.0738 81.3912 78.5193 0.133 0.0027 98.0 99.9
0.000 84.8668 84.5401 84.5912 73.5344 0.112 0.0009 99.2 99.6
-3.000 84.6187 84.3356 84.9821 74.4954 0.106 0.0005 99.5 99.7
-6.000 85.2845 84.9756 84.7187 71.2065 0.137 0.0005 99.6 99.6
-9.000 84.8754 84.5105 85.2035 70.7522 0.146 0.0004 99.7 99.6
0.000 84.9943 84.7514 84.8887 72.5103 0.125 0.0033 97.4 99.7
-3.000 85.0101 84.8145 84.8920 73.3810 0.116 0.0029 97.5 99.8
-6.000 84.7628 84.5990 84.3000 66.5013 0.180 0.0031 98.3 99.8
-9.000 85.0008 84.8037 84.4791 70.5230 0.141 0.0037 97.4 99.8
0.000 85.0013 84.7480 83.9715 72.4463 0.117 0.0025 97.9 99.7
-3.000 85.0002 84.8169 84.9260 71.0175 0.141 0.0020 98.6 99.8
-6.000 85.2390 85.0181 84.6700 72.1930 0.126 0.0017 98.7 99.7
-9.000 84.7323 84.6281 85.1802 69.6651 0.158 0.0020 98.7 99.9
質量(g) 腐食速度
（mm/y） 防食
率(%)
防食
効果
(%)防食時(P) 無防食時(C)
新潟県4
番
号都道
府県港・湾名
新潟港
設置
年数
水深
(m)
4.0
0.9
1.1
0.9
0.9
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設置前 設置後 設置前 設置後 C P
0.000 92.2508 92.0778 92.0019 86.2943 0.106 0.0026 97.5 99.8
-3.000 92.6910 92.4146 92.2767 83.4363 0.164 0.0019 98.8 99.7
-6.000 92.3035 92.0393 91.9569 82.3399 0.179 0.0022 98.8 99.7
-9.000 92.3938 92.1468 91.7556 84.7679 0.130 0.0011 99.2 99.7
0.000 91.6723 91.5100 91.9167 86.1879 0.106 0.0032 97.0 99.8
-3.000 92.4370 92.1672 92.0445 83.4085 0.160 0.0051 96.8 99.7
-6.000 91.8743 91.6593 91.9629 84.6711 0.135 0.0049 96.4 99.8
-9.000 92.3045 92.1468 92.1557 83.6953 0.157 0.0046 97.1 99.8
0.000 92.4936 92.3745 91.9543 86.6303 0.099 0.0030 97.0 99.9
-3.000 92.2029 92.0970 92.1589 82.9454 0.171 0.0050 97.1 99.9
-6.000 92.1442 92.0221 92.3460 82.8253 0.177 0.0040 97.7 99.9
-9.000 91.6264 91.5285 91.8598 84.4121 0.138 0.0029 97.9 99.9
92.5061 92.4304 92.1421 74.8431 0.125 0.0006 99.6 99.9
93.2975 93.2029 92.6729 67.7393 0.180 0.0007 99.6 99.9
92.6888 92.5181 92.7723 65.3407 0.198 0.0012 99.4 99.8
93.1621 93.0078 93.3803 70.2886 0.167 0.0011 99.3 99.8
93.2370 93.0702 93.1504 73.3852 0.143 0.0012 99.2 99.8
93.2414 93.0581 93.0581 72.2904 0.150 0.0013 99.1 99.8
93.3041 93.1578 93.1392 72.1375 0.152 0.0011 99.3 99.8
92.6918 92.5161 92.8774 68.4872 0.176 0.0013 99.3 99.8
92.9906 92.8525 93.2842 73.2493 0.145 0.0010 99.3 99.9
92.7855 92.6211 92.4275 71.5750 0.151 0.0012 99.2 99.8
92.5974 92.4657 93.3713 72.5177 0.151 0.0010 99.4 99.9
92.6461 92.5049 92.8078 66.8312 0.187 0.0010 99.5 99.8
93.0671 92.9676 92.6631 72.9050 0.143 0.0007 99.5 99.9
93.4119 93.2943 92.9352 75.5709 0.125 0.0009 99.3 99.9
93.4588 93.3550 93.4006 71.3574 0.159 0.0008 99.5 99.9
93.0647 92.9508 92.7609 67.9857 0.188 0.0008 99.6 99.9
93.3214 93.1702 91.7723 71.4591 0.147 0.0011 99.3 99.8
93.3584 93.1186 92.6945 72.9649 0.142 0.0017 98.8 99.7
93.1513 92.9775 92.7080 78.5556 0.102 0.0013 98.8 99.8
91.8936 91.6973 92.4039 68.3571 0.174 0.0014 99.2 99.8
93.2526 93.1036 93.0205 72.4083 0.149 0.0011 99.3 99.8
92.7294 92.5698 93.3615 77.6751 0.113 0.0012 99.0 99.8
93.0411 92.8999 92.8901 70.3066 0.163 0.0010 99.4 99.8
92.8433 92.6880 93.0209 60.7055 0.233 0.0011 99.5 99.8
83.8782 83.7564 84.0175 79.8250 0.160 0.0047 97.1 99.9
84.5445 84.3490 84.1830 80.2899 0.149 0.0075 95.0 99.8
84.3517 84.2162 84.4027 81.3875 0.115 0.0052 95.5 99.8
84.6420 84.5710 84.1205 78.3194 0.222 0.0027 98.8 99.9
84.2410 84.1859 84.2107 80.1430 0.156 0.0021 98.7 99.9
84.6270 84.5384 84.3099 80.3886 0.150 0.0034 97.7 99.9
83.8025 83.6582 84.1768 75.4695 0.333 0.0055 98.3 99.8
84.1779 84.0131 84.2429 78.6839 0.213 0.0063 97.0 99.8
84.2518 84.1645 84.7980 81.8228 0.114 0.0033 97.1 99.9
84.2684 84.2138 84.0924 81.3597 0.105 0.0021 98.0 99.9
83.8355 83.7418 83.8986 75.4831 0.123 0.0014 98.9 99.9
84.2424 84.1512 83.3283 70.1567 0.193 0.0013 99.3 99.9
83.8162 83.7333 84.2043 69.2895 0.218 0.0012 99.5 99.9
84.4626 84.3836 83.4316 68.0821 0.225 0.0012 99.5 99.9
86.0590 85.8478 86.1636 82.4812 0.161 0.0093 94.2 99.8
85.8835 85.7059 86.0149 81.0059 0.219 0.0078 96.4 99.8
85.4406 85.3159 85.9463 80.7613 0.227 0.0055 97.6 99.9
85.9570 85.8581 86.1937 81.7319 0.196 0.0043 97.8 99.9
84.7073 84.5321 84.3143 60.9883 0.194 0.0015 99.2 99.8
84.4561 84.3184 84.0050 68.6458 0.127 0.0011 99.1 99.8
84.6772 84.5528 84.3329 63.5704 0.172 0.0010 99.4 99.9
84.8579 84.7100 84.6609 62.8939 0.181 0.0012 99.3 99.8
腐食速度
（mm/y） 防食
率(%)
防食
効果
(%)防食時(P) 無防食時(C)
-
番
号都道
府県港・湾名
設置
年数
水深
(m)
質量(g)
新潟港
新潟県
0.9
4.9
4
2.2
5.6
1.1
2.8
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設置前 設置後 設置前 設置後 C P
85.4230 85.3124 85.4367 80.9111 0.198 0.0048 97.6 99.9
85.9868 85.9108 86.0087 80.1973 0.255 0.0033 98.7 99.9
86.0405 85.9449 86.1075 83.1435 0.130 0.0042 96.8 99.9
86.2854 86.2294 85.8470 80.5705 0.231 0.0025 98.9 99.9
84.6520 84.4736 84.2528 64.3187 0.165 0.0015 99.1 99.8
84.3018 84.1912 84.1329 66.9107 0.143 0.0009 99.4 99.9
84.7123 84.6428 84.5758 58.2202 0.219 0.0006 99.7 99.9
84.9580 83.8212 84.6567 66.6921 0.149 0.0094 93.7 98.7
86.0007 85.8184 86.2566 82.7515 0.154 0.0080 94.8 99.8
86.1285 86.0534 85.5432 82.5986 0.129 0.0033 97.4 99.9
86.2128 86.1273 85.9481 82.9201 0.133 0.0037 97.2 99.9
82.1236 82.0026 82.7619 55.4295 0.081 0.0004 99.6 99.9
82.2464 82.1385 82.2918 51.9133 0.090 0.0003 99.6 99.9
81.6599 81.5994 81.8318 49.6643 0.095 0.0002 99.8 99.9
93.0177 92.9005 92.9879 79.9213 0.065 0.0006 99.1 99.9
93.0065 92.9159 92.7543 77.9633 0.073 0.0005 99.4 99.9
92.9278 92.8493 92.9135 77.4222 0.077 0.0004 99.5 99.9
92.8333 92.7486 93.2975 78.0562 0.160 0.0009 99.4 99.9
93.0822 92.2212 93.2941 86.1724 0.075 0.0091 87.9 99.1
83.6650 83.5188 83.9973 24.9685 0.173 0.0004 99.8 99.8
83.2608 83.0529 83.9182 33.9722 0.147 0.0006 99.6 99.8
84.1402 83.8082 83.7159 40.1238 0.128 0.0010 99.2 99.6
93.1373 93.1110 92.9874 90.5010 0.150 0.0009 99.4 100.0
93.0633 93.0392 93.3181 88.8273 0.149 0.0013 99.1 100.0
92.6649 92.6542 93.1374 90.6161 0.122 0.0014 98.9 100.0
1.1 92.7413 92.7195 93.1901 90.4322 0.103 0.0008 99.2 100.0
84.8630 84.0999 82.5950 44.4081 0.117 0.0023 98.0 99.1
84.6985 83.8820 84.4452 37.9799 0.142 0.0025 98.2 99.0
83.0506 82.6579 83.5817 35.2950 0.165 0.0013 99.2 99.5
82.5178 82.1798 82.9008 49.4384 0.114 0.0012 98.9 99.6
83.0610 82.7715 84.0067 58.6595 0.087 0.0010 98.8 99.7
83.2788 83.0454 83.6040 50.2798 0.114 0.0008 99.3 99.7
83.5890 83.0992 83.3307 40.5491 0.146 0.0017 98.8 99.4
83.7046 83.4060 81.9240 58.1462 0.081 0.0010 98.8 99.6
84.1146 83.8508 83.1012 50.7029 0.111 0.0009 99.2 99.7
83.0833 82.8294 83.6638 41.9150 0.143 0.0009 99.4 99.7
0 84.1370 83.7940 84.3190 33.0111 0.133 0.0009 99.3 99.6
-3 84.2590 84.0521 82.1735 58.4655 0.061 0.0005 99.2 99.8
-6 84.3592 84.1543 84.4195 35.9241 0.126 0.0005 99.6 99.8
底 84.8928 84.7412 84.2870 70.9125 0.035 0.0004 98.8 99.8
83.2857 82.9186 83.4610 53.6460 0.136 0.0017 98.7 99.6
84.1960 83.9325 83.5378 57.0770 0.120 0.0012 99.0 99.7
82.4260 82.1869 82.7982 64.6422 0.083 0.0011 98.7 99.7
84.0845 83.8639 83.0195 59.9773 0.105 0.0010 99.0 99.7
83.2446 83.0821 83.2880 59.9482 0.106 0.0007 99.3 99.8
84.3774 83.8364 84.0590 55.2918 0.111 0.0021 98.1 99.4
84.1250 83.6790 84.8535 58.6379 0.101 0.0017 98.3 99.5
83.9360 83.8842 84.1002 69.8175 0.213 0.0008 99.6 99.9
84.4089 84.2805 84.8350 70.1424 0.219 0.0019 99.1 99.8
84.3596 84.2547 84.6100 69.4853 0.225 0.0016 99.3 99.9
新潟県4
設置
年数
水深
(m)
質量(g) 腐食速度
（mm/y） 防食
率(%)
防食
効果
(%)防食時(P) 無防食時(C)
7 福井県 - 2.7
15.7
6 石川県 七尾南湾
8.9
10.5
1.1
5 富山県 富山湾
13.3
11.9
4.9
0.9
13.7
8.2
3.9
13.8
-
0.9
番
号都道
府県港・湾名
-
- 62 -
設置前 設置後 設置前 設置後 C P
85.2952 85.1454 84.9645 75.9963 0.192 0.0032 98.3 99.8
87.2412 87.0878 84.4550 78.5198 0.127 0.0033 97.4 99.8
88.0576 87.8501 85.1098 79.1098 0.130 0.0044 96.6 99.8
88.1907 88.0290 86.6954 80.3213 0.137 0.0035 97.4 99.8
85.1680 85.0292 85.0073 76.9713 0.172 0.0030 98.3 99.8
87.0100 86.8138 87.9290 79.9984 0.170 0.0042 97.5 99.8
87.4184 87.2776 88.2548 83.2862 0.107 0.0030 97.2 99.8
86.7329 86.5439 85.5090 77.2127 0.178 0.0041 97.7 99.8
86.5287 86.4074 86.0968 82.1244 0.085 0.0026 96.9 99.9
87.1684 87.0712 87.4543 81.8947 0.119 0.0021 98.2 99.9
86.3894 86.2717 86.6018 80.7377 0.126 0.0025 98.0 99.9
87.7057 87.6015 87.2523 82.3827 0.104 0.0022 97.9 99.9
86.9144 86.8210 86.5768 81.5565 0.108 0.0020 98.1 99.9
84.4017 84.1783 84.4144 43.7900 0.343 0.0019 99.4 99.7
82.8793 82.7154 84.5562 64.2498 0.172 0.0014 99.2 99.8
84.0786 84.0046 84.4614 77.4195 0.060 0.0006 99.0 99.9
84.3941 84.3353 84.0927 61.9845 0.187 0.0005 99.7 99.9
84.4055 84.3074 84.7780 64.6288 0.170 0.0008 99.5 99.9
84.1105 83.9925 84.5511 67.8746 0.141 0.0010 99.3 99.9
82.7374 82.6814 84.6008 70.2133 0.122 0.0005 99.6 99.9
83.9687 83.8952 84.3553 75.5985 0.108 0.0009 99.2 99.9
84.2834 84.2142 83.7521 73.7197 0.124 0.0009 99.3 99.9
83.7782 83.7002 84.3006 75.1264 0.114 0.0010 99.1 99.9
84.0225 83.8665 83.9186 65.7189 0.187 0.0016 99.1 99.8
84.2215 84.0496 84.0149 68.2614 0.162 0.0018 98.9 99.8
83.9968 83.8326 84.1415 64.4976 0.203 0.0017 99.2 99.8
84.1464 83.9640 84.0774 72.8568 0.116 0.0019 98.4 99.8
84.3470 84.2209 84.3800 73.1283 0.116 0.0013 98.9 99.9
310.6207 310.4677 310.8577 276.8086 0.150 0.0007 99.5 100.0
311.0270 310.8440 310.8065 289.1931 0.095 0.0008 99.2 99.9
310.7552 310.5627 310.6605 278.4042 0.142 0.0008 99.4 99.9
310.6474 310.4490 310.0436 289.9496 0.090 0.0009 99.0 99.9
311.0871 310.9303 310.6402 279.7243 0.136 0.0007 99.5 99.9
310.5536 310.3531 310.6479 289.9518 0.104 0.0009 99.1 99.9
-1 83.0756 82.8639 84.3734 58.4264 0.081 0.0010 98.8 99.7
-4 83.4291 83.2963 84.8082 72.6513 0.038 0.0000 100.0 99.8
-1 84.0583 83.8740 82.9050 60.3540 0.070 0.0010 98.6 99.8
-4 83.6303 83.3941 83.9313 74.6405 0.029 0.0001 99.7 99.7
-7 82.9857 82.8103 83.3414 50.2394 0.103 0.0010 99.0 99.8
-1 83.8603 83.6881 83.3782 59.0943 0.075 0.0010 98.7 99.8
-4 83.6805 83.4672 83.8780 77.4540 0.020 0.0010 95.0 99.7
0.0 93.2682 93.0482 93.3477 82.8141 0.400 0.0080 98.0 99.8
-1.0 93.2733 92.8415 93.2455 82.3233 0.415 0.0160 96.1 99.5
-1.5 93.2577 92.8481 93.2367 83.2713 0.379 0.0160 95.8 99.6
-2.0 93.2561 92.8870 93.3505 83.7459 0.365 0.0140 96.2 99.6
-3.0 93.2468 92.8791 93.2343 83.6251 0.365 0.0140 96.2 99.6
0.0 93.2689 92.7089 93.2006 69.2956 0.467 0.0110 97.6 99.4
-1.0 93.1802 92.7231 93.2465 60.6663 0.637 0.0090 98.6 99.5
-1.5 93.2998 92.8716 93.1636 77.1921 0.312 0.0080 97.4 99.5
-2.0 93.2433 92.8515 93.1270 77.7360 0.301 0.0080 97.3 99.6
-3.0 93.2387 92.8901 93.2278 81.8468 0.223 0.0070 96.9 99.6
0.0 93.2286 92.7745 93.1172 65.0844 0.372 0.0060 98.39 99.5
-1.0 93.2445 92.7989 93.3217 77.5003 0.210 0.0059 97.19 99.5
-1.5 93.2671 92.8689 93.1705 75.5544 0.234 0.0053 97.73 99.6
-2.0 93.3679 93.0591 93.2680 78.1837 0.200 0.0041 97.95 99.7
-3.0 93.3189 93.0242 93.3235 78.0729 0.202 0.0039 98.07 99.7
東京港東京都9
質量(g) 腐食速度
（mm/y） 防食
率(%)
防食
効果
(%)防食時(P) 無防食時(C)
番
号都道
府県港・湾名
設置
年数
水深
(m)
1.1
2.1
3.1
4.8
3.3
3.9
8 千葉県 東京湾
1.9
-
- 63 -
設置前 設置後 設置前 設置後 C P
0.0 93.3255 93.1360 93.1778 58.5404 0.337 0.0018 99.5 99.8
-1.0 93.2434 92.9520 93.2674 84.2808 0.087 0.0028 96.8 99.7
-1.5 93.2132 92.9249 93.2796 57.7949 0.345 0.0028 99.2 99.7
-2.0 93.3140 93.0723 93.0599 74.1741 0.184 0.0023 98.7 99.7
-3.0 93.2708 93.0861 93.1348 81.0269 0.118 0.0018 98.5 99.8
84.6932 84.4821 82.6663 26.0193 0.230 0.0009 99.6 99.8
82.6775 82.3613 85.1223 37.8747 0.162 0.0013 99.2 99.6
84.9571 84.8113 82.8102 42.7861 0.162 0.0006 99.6 99.8
84.3230 84.1165 84.3742 51.4445 0.134 0.0008 99.4 99.8
83.3885 83.1772 83.9921 44.4629 0.160 0.0009 99.4 99.7
15.4 86.1490 80.7430 86.6804 31.5365 0.145 0.0142 90.2 93.7
9.3 84.1876 84.0227 84.2928 41.3211 0.187 0.0007 99.6 99.8
6.3 83.6489 83.5508 84.5081 58.6379 0.166 0.0006 99.6 99.9
83.4244 82.8589 83.1464 59.3638 0.139 0.0033 97.6 99.3
83.3899 82.8046 83.6652 59.2469 0.143 0.0034 97.6 99.3
83.8087 83.2219 82.9081 70.2310 0.074 0.0034 95.4 99.3
83.6289 82.8928 82.8481 60.0996 0.133 0.0043 96.8 99.1
83.4096 82.6762 83.4687 66.3465 0.100 0.0043 95.7 99.1
83.9540 83.3575 84.1692 52.3142 0.186 0.0035 98.1 99.3
83.2419 82.5645 83.2183 66.8931 0.095 0.0047 95.1 99.2
83.7912 83.0685 83.9271 68.0960 0.093 0.0042 95.5 99.1
83.7567 83.0575 84.1514 69.7558 0.084 0.0041 95.1 99.2
83.1243 83.0616 83.6372 71.7161 0.161 0.0008 99.5 99.9
83.2096 83.1328 84.1629 71.0171 0.177 0.0010 99.4 99.9
83.4752 83.3901 84.2207 73.3496 0.146 0.0011 99.2 99.9
84.4945 84.4295 84.6253 73.2871 0.153 0.0009 99.4 99.9
83.6194 82.4839 83.5798 75.3672 0.113 0.0153 86.4 98.6
114.9190 114.8055 103.7789 54.4351 0.255 0.0006 99.8 99.9
102.6905 102.5583 103.3750 65.7710 0.194 0.0007 99.6 99.9
103.7034 103.5217 103.3924 74.3221 0.150 0.0009 99.4 99.8
102.6204 102.4438 103.6392 79.0372 0.127 0.0009 99.3 99.8
±0 82.7762 82.1510 83.2510 48.1461 0.169 0.0030 98.2 99.2
-2 83.4680 83.2170 83.9869 40.4697 0.210 0.0012 99.4 99.7
-4 82.0691 81.9774 81.8141 51.4687 0.146 0.0004 99.7 99.9
0.0 85.6538 85.5529 86.0632 18.7056 0.203 0.0003 99.9 99.9
-3.0 84.6992 84.6678 85.1971 25.1837 0.181 0.0001 99.9 100.0
-6.0 85.3041 85.2195 84.3804 36.8794 0.143 0.0003 99.8 99.9
82.6991 82.4666 82.0176 34.4889 0.160 0.0008 99.5 99.7
82.3960 82.2345 84.4038 29.8698 0.183 0.0005 99.7 99.8
84.5367 83.8215 84.7113 49.4978 0.118 0.0024 98.0 99.2
83.6970 83.5970 84.0091 27.6786 0.189 0.0003 99.8 99.9
84.5794 84.5322 84.2558 49.5080 0.151 0.0002 99.9 99.9
82.9226 82.8251 83.1681 55.9268 0.118 0.0004 99.7 99.9
84.4611 84.3848 82.9814 43.2570 0.172 0.0003 99.8 99.9
84.7438 84.6987 84.9176 78.9613 0.088 0.0007 99.2 99.9
84.6875 84.6573 84.6142 74.8289 0.145 0.0004 99.7 100.0
設置
年数
水深
(m)
質量(g) 腐食速度
（mm/y） 防食
率(%)
防食
効果
(%)防食時(P) 無防食時(C)
東京港東京都9
番
号都道
府県港・湾名
11 静岡県 田子の浦港 2.7
- 12.0
横須賀新港 9.3
3.0
3.8
- 8.4
- 13.5
4.2
10.0
10 神奈川県
川崎港 6.9
川崎港
-
- 64 -
設置前 設置後 設置前 設置後 C P
84.3054 84.1411 84.2719 73.9087 0.230 0.0036 98.4 99.8
84.3630 84.1769 84.3185 76.8970 0.165 0.0041 97.5 99.8
3.1 81.4944 81.4342 84.0691 80.2337 0.050 0.0008 98.4 99.9
±0 85.4108 85.3341 85.4027 64.6145 0.134 0.0005 99.6 99.9
-3 85.6902 85.6302 86.5380 70.3084 0.105 0.0004 99.6 99.9
-1 86.7574 86.6881 86.8878 64.6269 0.144 0.0004 99.7 99.9
-11 86.2133 86.1539 86.3095 65.7062 0.133 0.0004 99.7 99.9
1.5 85.0364 84.7698 84.9358 80.8636 0.113 0.0074 93.4 99.7
1.2 85.0668 84.9032 85.2648 75.6767 0.331 0.0060 98.2 99.8
84.4766 84.3873 83.6257 23.4750 0.138 0.0002 99.9 99.9
84.0192 83.0577 84.2208 25.7974 0.134 0.0002 99.9 98.9
84.0805 83.9990 83.7873 74.0569 0.086 0.0007 99.2 99.9
84.9446 84.8740 83.7531 59.0893 0.218 0.0006 99.7 99.9
83.4819 83.3812 84.7075 69.3323 0.136 0.0009 99.3 99.9
83.8900 82.7274 84.4987 34.6973 0.151 0.0035 97.7 98.6
84.4783 84.0964 84.6000 42.9355 0.127 0.0012 99.1 99.5
84.2950 82.8549 84.1847 17.5350 0.203 0.0044 97.8 98.3
84.0423 83.9522 84.3477 45.6234 0.117 0.0003 99.7 99.9
84.2873 84.2385 84.2211 51.9504 0.098 0.0001 99.9 99.9
83.8420 83.7547 84.7486 30.4972 0.165 0.0003 99.8 99.9
0.0 93.2737 93.1200 93.2690 86.4755 0.274 0.0060 97.8 99.8
-1.0 93.2872 93.0893 93.2003 85.6354 0.305 0.0080 97.4 99.8
-2.0 93.2452 93.0629 93.2157 87.4718 0.232 0.0070 97.0 99.8
-3.0 93.2063 93.0652 93.2201 88.1218 0.206 0.0060 97.1 99.8
0.0 93.2846 93.0952 93.3030 82.1858 0.222 0.0040 98.2 99.8
-1.0 93.2195 92.8290 93.3261 86.0468 0.146 0.0080 94.5 99.6
-2.0 93.2137 92.9575 93.2649 85.7549 0.150 0.0050 96.7 99.7
-3.0 93.2670 93.0083 93.2108 88.0267 0.104 0.0050 95.2 99.7
0.0 93.1845 92.9639 93.3559 82.7358 0.141 0.0030 97.9 99.8
-1.0 93.2727 92.9161 93.3191 85.5311 0.104 0.0050 95.2 99.6
-2.0 93.2556 93.0542 93.2839 79.5724 0.182 0.0030 98.4 99.8
-3.0 93.2770 93.0922 93.1956 86.9479 0.083 0.0020 97.6 99.8
0.0 93.1845 93.1444 93.2373 79.2472 0.134 0.0004 99.7 100.0
-2.0 93.1861 93.1567 93.2000 85.2606 0.076 0.0003 99.6 100.0
-3.0 93.2485 93.2090 93.2259 86.6682 0.063 0.0004 99.4 100.0
83.7296 83.4649 83.9076 71.4787 0.195 0.0041 97.9 99.7
84.1472 83.9454 83.3592 73.2600 0.158 0.0032 98.0 99.8
84.5360 84.3675 84.6862 70.6542 0.189 0.0023 98.8 99.8
84.0600 83.8067 84.4392 67.5018 0.228 0.0034 98.5 99.7
83.4397 83.1905 82.9552 71.7256 0.151 0.0033 97.8 99.7
83.4509 82.3075 82.4398 52.5771 0.150 0.0057 96.2 98.6
84.1237 83.8927 84.3755 46.0536 0.193 0.0012 99.4 99.7
84.0853 83.9631 83.9926 56.2229 0.140 0.0006 99.6 99.9
84.4277 84.3339 84.7322 55.6253 0.146 0.0005 99.7 99.9
84.6874 84.6137 84.8933 78.4004 0.136 0.0015 98.9 99.9
84.5085 84.4260 84.6711 75.0246 0.201 0.0017 99.2 99.9
84.0221 83.9398 84.3852 74.7101 0.202 0.0017 99.2 99.9
84.0982 84.0377 84.1928 74.2565 0.207 0.0013 99.4 99.9
84.2521 84.0857 84.6199 77.4985 0.149 0.0035 97.6 99.8
84.0124 83.8239 84.3085 78.7201 0.117 0.0039 96.7 99.8
83.7056 83.5144 84.1516 59.0265 0.172 0.0013 99.2 99.8
84.6991 84.5800 84.7783 58.1536 0.182 0.0008 99.6 99.9
83.3664 83.1928 84.4838 58.2840 0.180 0.0012 99.3 99.8
番
号都道
府県港・湾名
堺泉北港大阪府14
設置
年数
水深
(m)
質量(g) 腐食速度
（mm/y） 防食
率(%)
防食
効果
(%)防食時(P) 無防食時(C)
1.9
5.9
4.3
2.6
3.0
8.0
13 三重県 四日市港
1.0
2.1
3.1
6.3
衣浦港
17.7
4.6
13.4
12 愛知県
名古屋港
1.8
-
- 65 -
設置前 設置後 設置前 設置後 C P
84.2819 84.1785 84.4249 66.5155 0.176 0.0010 99.4 99.9
85.3417 85.2082 84.3878 66.8896 0.172 0.0013 99.2 99.8
83.0118 82.9047 84.5032 65.7012 0.185 0.0011 99.4 99.9
86.7093 86.6543 86.2366 71.0410 0.195 0.0007 99.6 99.9
87.1257 87.0629 86.0545 66.9772 0.244 0.0008 99.7 99.9
86.2840 86.2201 85.6361 76.5878 0.116 0.0008 99.3 99.9
86.5542 86.4994 85.9995 74.9831 0.141 0.0007 99.5 99.9
86.6192 86.5562 86.7593 76.9641 0.126 0.0008 99.4 99.9
86.0373 85.9527 86.8349 71.5750 0.195 0.0011 99.4 99.9
83.5306 83.4644 83.7064 27.6319 0.186 0.0002 99.9 99.9
84.3013 82.4573 83.8727 41.3485 0.141 0.0061 95.7 97.8
83.3846 78.3718 84.3176 34.7750 0.164 0.0166 89.9 94.0
84.3778 84.2722 84.4707 59.7616 0.146 0.0006 99.6 99.9
84.6102 84.5107 84.4061 59.5202 0.147 0.0006 99.6 99.9
84.3390 84.2254 84.3955 62.9976 0.126 0.0007 99.4 99.9
84.1870 84.0325 84.2350 24.5915 0.262 0.0007 99.7 99.8
83.6200 83.4129 84.0046 42.0553 0.184 0.0009 99.5 99.8
84.2655 83.9334 82.1884 49.4685 0.144 0.0015 99.0 99.6
1.9 84.9665 84.8589 84.5743 64.7578 0.416 0.0023 99.4 99.9
84.4706 84.3429 83.8993 59.6963 0.143 0.0008 99.4 99.8
84.3885 84.2552 84.5384 56.3002 0.167 0.0008 99.5 99.8
84.4347 84.3352 84.4034 61.5234 0.135 0.0006 99.6 99.9
82.5188 82.4488 81.6654 35.5519 0.179 0.0003 99.8 99.9
83.5527 83.5307 82.1640 51.7552 0.118 0.0001 99.9 100.0
84.1755 84.1151 84.3191 63.5631 0.081 0.0002 99.8 99.9
82.0411 81.3718 83.6847 39.6399 0.185 0.0028 98.5 99.2
84.1241 84.0160 83.1962 41.5812 0.175 0.0005 99.7 99.9
83.3231 83.2600 83.9191 48.2252 0.150 0.0003 99.8 99.9
83.3177 82.4549 83.0450 5.6272 0.318 0.0035 98.9 99.0
84.0840 83.9603 84.3146 32.3632 0.214 0.0005 99.8 99.9
83.3887 82.7370 84.2392 26.3391 0.238 0.0027 98.9 99.2
84.0500 83.1283 84.3078 24.0701 0.248 0.0038 98.5 98.9
84.0825 80.8519 83.5387 34.4409 0.205 0.0135 93.4 96.2
83.9257 83.8630 83.0928 48.7338 0.144 0.0003 99.8 99.9
82.7914 82.6904 83.9742 51.8256 0.134 0.0004 99.7 99.9
83.8156 83.4246 83.3554 39.0261 0.185 0.0016 99.1 99.5
84.4593 84.3369 83.5747 54.1028 0.123 0.0005 99.6 99.9
-0.078 93.2705 92.7604 93.1939 86.7530 0.216 0.0170 92.1 99.5
-0.477 93.2639 92.9260 93.2560 83.7824 0.317 0.0110 96.5 99.6
-1.143 93.2425 93.1006 93.2245 87.3783 0.196 0.0050 97.4 99.8
-2.408 93.2478 93.0772 93.2485 88.9956 0.143 0.0060 95.8 99.8
-3.374 93.1917 93.0101 93.2273 91.3697 0.062 0.0060 90.3 99.8
-0.078 93.2921 92.8988 93.2687 88.0626 0.097 0.0070 92.8 99.6
-0.477 93.2749 92.9452 93.2831 86.2395 0.131 0.0060 95.4 99.6
-1.143 93.2867 93.0115 93.2523 87.3645 0.110 0.0050 95.5 99.7
-2.408 93.3095 93.0398 93.2179 88.8892 0.081 0.0050 93.8 99.7
-3.374 93.2313 93.1226 93.2383 90.9838 0.042 0.0020 95.2 99.9
-0.078 93.3253 93.1299 93.3025 86.5112 0.090 0.0030 96.7 99.8
-0.477 93.2048 92.9730 93.2527 83.9043 0.124 0.0030 97.6 99.8
-1.143 93.2715 93.0018 93.2517 88.8496 0.058 0.0040 93.1 99.7
-2.408 93.2308 93.0178 93.2577 88.4018 0.064 0.0030 95.3 99.8
-3.374 93.3230 93.1030 93.2281 89.7063 0.047 0.0030 93.6 99.8
-0.477 93.2579 93.2095 93.2938 85.6257 0.077 0.0005 99.4 99.9
-1.143 93.1913 93.1611 93.2717 88.5210 0.048 0.0003 99.4 100.0
-2.408 93.2566 93.2124 93.2856 88.5564 0.048 0.0004 99.2 100.0
-3.374 93.2833 93.2418 93.2614 89.8139 0.035 0.0004 98.9 100.0
堺泉北港
質量(g) 腐食速度
（mm/y）水深
(m)
9.7
防食時(P) 無防食時(C)防食
率(%)
防食
効果
(%)
4.1
大阪府14
大阪港1.2
2.2
3.1
9.2
6.9
10.4
9.6
9.8
3.2
12.2
6.9
4.1
番
号都道
府県港・湾名
設置
年数
-
- 66 -
設置前 設置後 設置前 設置後 C P
86.0961 86.0532 85.6355 79.2962 0.249 0.0017 99.3 100.0
85.7617 85.7139 86.2521 81.4932 0.187 0.0019 99.0 99.9
84.3844 84.2372 84.0380 54.2126 0.159 0.0008 99.5 99.8
84.4001 84.3220 84.2620 54.6515 0.158 0.0004 99.7 99.9
83.7371 83.6432 84.8150 49.6925 0.188 0.0005 99.7 99.9
±0 84.1530 84.0752 83.7402 54.0770 0.134 0.0004 99.7 99.9
±0 84.2880 84.2045 83.7596 31.9278 0.235 0.0004 99.8 99.9
-4 84.1918 84.1362 83.3470 52.9686 0.138 0.0003 99.8 99.9
-8 83.0897 83.0246 82.9020 40.8217 0.191 0.0003 99.8 99.9
83.6204 83.4956 84.4693 40.6723 0.252 0.0007 99.7 99.9
85.0182 84.8709 85.1256 57.4457 0.159 0.0008 99.5 99.8
84.7634 84.6850 84.2847 43.9152 0.233 0.0005 99.8 99.9
85.8570 85.3853 85.4228 62.1794 0.168 0.0034 98.0 99.5
85.0727 84.9208 85.3200 70.2689 0.109 0.0011 99.0 99.8
84.8387 84.6368 85.9605 66.9804 0.137 0.0015 98.9 99.8
85.3035 85.0732 85.5556 61.5947 0.173 0.0017 99.0 99.7
84.3846 84.2861 83.8912 49.9372 0.217 0.0006 99.7 99.9
83.0024 82.7526 83.4350 65.8788 0.112 0.0016 98.6 99.7
82.9250 82.8429 84.6314 58.7431 0.165 0.0005 99.7 99.9
84.1056 83.9586 83.3164 54.9222 0.200 0.0010 99.5 99.8
83.8086 83.7030 84.2267 63.4177 0.147 0.0007 99.5 99.9
82.5933 82.4311 84.3167 59.8197 0.173 0.0011 99.4 99.8
83.7487 83.6718 83.8892 79.8760 0.147 0.0028 98.1 99.9
83.5839 83.5393 82.1735 76.9395 0.191 0.0016 99.2 99.9
83.5819 83.5173 84.1669 80.1646 0.146 0.0024 98.4 99.9
84.3728 84.2028 84.0597 68.6689 0.193 0.0021 98.9 99.8
83.8672 83.6996 83.9811 71.9575 0.151 0.0021 98.6 99.8
83.4497 83.3116 84.2272 74.9779 0.116 0.0017 98.5 99.8
-0.1 92.3812 92.3118 92.4045 80.8828 0.150 0.0009 99.4 99.9
-3.0 92.4312 92.3345 92.4391 80.9945 0.149 0.0013 99.1 99.9
-6.0 93.1232 93.0140 93.0818 83.7247 0.122 0.0014 98.9 99.9
-6.0 93.1252 93.0135 93.0912 83.5335 0.122 0.0014 98.9 99.9
85.8212 85.7384 85.6329 80.0090 0.217 0.0032 98.5 99.9
85.6223 85.5255 85.4323 79.4712 0.230 0.0037 98.4 99.9
85.4027 85.3258 86.0219 82.6635 0.130 0.0030 97.7 99.9
9.0 85.2809 85.2036 85.1925 70.6692 0.065 0.0000 100.0 99.9
82.4443 82.3261 84.8600 38.3007 0.197 0.0005 99.7 99.9
82.7552 82.6596 84.5480 52.2110 0.137 0.0004 99.7 99.9
84.4146 84.2819 83.6208 44.2219 0.167 0.0006 99.6 99.8
83.8744 83.7273 83.5450 56.0297 0.174 0.0009 99.5 99.8
84.9700 84.8723 83.8269 64.9252 0.119 0.0006 99.5 99.9
84.5668 84.4504 84.1273 72.9173 0.071 0.0007 99.0 99.9
82.4093 82.2895 84.9522 48.3267 0.169 0.0006 99.6 99.9
83.1969 83.1421 84.0062 50.3516 0.155 0.0003 99.8 99.9
82.2350 82.1776 83.3935 54.4984 0.133 0.0003 99.8 99.9
84.4973 84.4281 82.4209 45.6606 0.169 0.0003 99.8 99.9
84.7507 84.7168 82.1798 51.6173 0.141 0.0002 99.9 100.0
水深
(m)
質量(g) 腐食速度
（mm/y） 防食
率(%)
防食
効果
(%)防食時(P) 無防食時(C)
相生港 8.8
15 兵庫県
- 5.6
1.0
東播磨港 9.5
姫路港 6.4
神戸港
6.3
5.7
1.1
3.2
3.1
1.0
7.6
大阪港
大阪府14
-
8.9
7.0
番
号都道
府県港・湾名
設置
年数
-
- 67 -
設置前 設置後 設置前 設置後 C P
81.7123 77.9572 81.8045 35.4594 0.213 0.0173 91.9 95.4
81.9320 80.3552 82.8045 43.9551 0.179 0.0073 95.9 98.1
82.5558 82.3276 82.9037 53.7590 0.134 0.0011 99.2 99.7
±0 83.5661 82.4944 82.7910 59.0557 0.112 0.0051 95.5 98.7
-1.5 83.5995 82.8113 82.9176 55.0819 0.132 0.0037 97.2 99.1
-3.0 83.0727 82.1817 83.3653 56.3521 0.128 0.0042 96.7 98.9
-4.5 83.2610 82.0910 83.0112 49.1572 0.160 0.0055 96.6 98.6
-6.0 83.2713 83.1142 83.6879 57.8301 0.123 0.0007 99.4 99.8
±0 83.9536 83.7235 84.1552 60.2523 0.115 0.0011 99.0 99.7
-2.5 84.0502 84.0181 84.3473 54.4863 0.143 0.0002 99.9 100.0
-5.0 83.8160 83.7717 85.2013 50.6380 0.166 0.0002 99.9 99.9
-7.5 84.2114 84.1367 84.9348 59.6595 0.121 0.0004 99.7 99.9
-10.0 82.5635 82.4887 84.1330 56.4182 0.133 0.0004 99.7 99.9
±0 82.9205 81.5535 83.0660 66.7897 0.118 0.0099 91.6 98.4
-2.0 83.6162 83.2941 82.9298 75.9539 0.050 0.0023 95.4 99.6
0.0 85.9027 85.5849 86.0097 32.7878 0.203 0.0003 99.9 99.6
0.0 85.6620 85.4816 85.8563 0.0000 0.181 0.0001 99.9 99.8
-2.0 85.8338 85.6262 86.1899 12.0765 0.143 0.0003 99.8 99.8
86.2540 84.6408 87.1520 25.8697 0.177 0.0046 97.4 98.1
86.8514 85.9071 85.8002 27.1209 0.169 0.0027 98.4 98.9
86.3387 84.6953 85.7730 21.1513 0.186 0.0047 97.5 98.1
86.3881 86.2309 86.0572 18.2431 0.214 0.0005 99.8 99.8
86.0540 85.9896 85.8523 46.6427 0.124 0.0002 99.8 99.9
85.6854 85.6002 86.1615 44.1798 0.132 0.0003 99.8 99.9
84.3156 84.2793 83.5305 52.8435 0.176 0.0002 99.9 100.0
83.9898 83.9384 84.5593 46.2147 0.220 0.0003 99.9 99.9
84.7722 84.7136 83.1508 44.8642 0.219 0.0003 99.9 99.9
83.3402 83.2751 84.3736 49.2525 0.201 0.0004 99.8 99.9
84.7078 84.6393 84.3760 62.4031 0.126 0.0004 99.7 99.9
83.5814 83.5356 82.3990 68.9578 0.077 0.0003 99.6 99.9
85.2536 82.6887 86.8086 52.8992 0.098 0.0074 92.4 97.0
84.0991 81.2733 86.5076 58.5543 0.081 0.0081 90.0 96.6
±0 81.7554 81.6264 84.2462 71.6884 0.103 0.0011 98.9 99.8
-1 84.2173 84.1061 84.5686 70.7751 0.113 0.0009 99.2 99.9
-2 80.3720 80.2754 83.1460 63.9362 0.157 0.0008 99.5 99.9
-4 84.6810 84.4469 81.9312 67.6160 0.117 0.0019 98.4 99.7
±0 83.5731 83.4164 84.4461 25.1267 0.265 0.0007 99.7 99.8
-2 83.5834 83.5028 84.0901 18.6928 0.272 0.0003 99.9 99.9
-4 84.1756 84.1053 83.8244 22.2581 0.256 0.0003 99.9 99.9
-6 84.0014 83.9307 84.1506 41.3191 0.178 0.0003 99.8 99.9
-0.5 84.4082 84.2928 83.3575 35.4987 0.209 0.0005 99.8 99.9
-2.0 83.8734 83.8132 82.9143 35.6037 0.206 0.0003 99.9 99.9
-3.5 82.8283 82.7443 83.1704 49.3232 0.148 0.0004 99.7 99.9
-5.0 83.2092 83.1254 84.0035 58.3140 0.112 0.0004 99.6 99.9
±0 84.3195 84.0984 84.5714 66.9705 0.072 0.0009 98.7 99.7
-1.5 84.6166 84.5012 83.7814 16.4358 0.275 0.0005 99.8 99.9
-3.0 84.4900 84.4089 84.2851 40.0999 0.180 0.0003 99.8 99.9
-4.5 84.8705 84.7541 82.6790 48.0029 0.142 0.0005 99.6 99.9
-5.5 83.9320 83.8385 84.1626 37.0662 0.192 0.0004 99.8 99.9
83.8297 83.7258 82.8906 67.0748 0.095 0.0006 99.4 99.9
84.2116 84.1283 84.4910 67.8328 0.100 0.0005 99.5 99.9
83.4282 83.3616 83.8014 60.5899 0.139 0.0004 99.7 99.9
83.7390 83.5169 83.8958 51.3241 0.196 0.0013 99.3 99.7
83.9434 83.7777 83.0980 53.5369 0.177 0.0001 99.9 99.8
83.8190 83.7308 84.0808 63.9126 0.121 0.0005 99.6 99.9
腐食速度
（mm/y） 防食
率(%)
防食
効果
(%)防食時(P) 無防食時(C)
番
号都道
府県港・湾名
設置
年数
水深
(m)
質量(g)
- 6.7
4.9
-
9.7
9.3
9.9
15.9
14.0
14.0
14.0
14.0
16 岡山県
水島港
8.8
8.5
-
- 68 -
設置前 設置後 設置前 設置後 C P
±0 84.1589 84.0165 84.8642 80.5589 0.303 0.0100 96.7 99.8
84.4199 84.3192 84.6225 80.1112 0.318 0.0071 97.8 99.9
84.5955 84.4543 83.9355 78.8187 0.361 0.0100 97.2 99.8
83.7362 83.6607 84.0706 80.0060 0.287 0.0053 98.2 99.9
84.2664 84.1700 84.0174 80.7427 0.231 0.0068 97.1 99.9
-0.91 93.2418 93.1396 93.2330 89.4348 0.142 0.0040 97.2 99.9
-1.91 93.3361 93.2003 93.2401 89.7611 0.130 0.0050 96.2 99.9
-2.91 93.2196 93.0646 93.1159 88.3580 0.178 0.0060 96.6 99.8
-0.91 93.2883 93.0361 93.2838 89.0359 0.087 0.0050 94.3 99.7
-1.91 93.2781 93.0429 93.2332 89.8474 0.069 0.0050 92.8 99.7
-2.91 93.2179 93.0484 93.2628 88.7687 0.092 0.0030 96.7 99.8
-0.91 93.3449 93.2454 93.2196 89.2311 0.051 0.0013 97.4 99.9
-1.91 93.2897 93.1917 93.2841 90.4010 0.037 0.0012 96.7 99.9
-2.91 93.2222 93.1170 93.1482 88.2081 0.063 0.0013 97.9 99.9
-0.91 93.2527 93.1809 93.2672 89.6921 0.034 0.0007 97.9 99.9
-1.91 93.3191 93.2293 93.2407 89.8649 0.032 0.0008 97.5 99.9
-2.91 93.3171 93.2248 93.3482 89.6373 0.035 0.0009 97.4 99.9
83.9406 83.8389 84.2104 74.3336 0.135 0.0014 99.0 99.9
84.4501 84.3371 84.3306 74.8784 0.129 0.0015 98.8 99.9
84.4435 84.3574 83.3773 72.7243 0.146 0.0012 99.2 99.9
84.3776 84.2653 84.0199 76.3952 0.104 0.0015 98.6 99.9
84.7627 84.6510 84.1075 76.4903 0.104 0.0015 98.6 99.9
84.5882 84.4938 83.1602 75.5503 0.104 0.0013 98.8 99.9
83.0521 82.9834 84.3266 75.6001 0.119 0.0009 99.2 99.9
84.3743 84.2820 84.4018 75.2745 0.125 0.0013 99.0 99.9
84.4754 84.3929 83.8208 77.6814 0.084 0.0011 98.7 99.9
84.4154 84.2853 83.9478 76.8520 0.097 0.0018 98.1 99.8
84.2112 84.0893 83.2961 74.1827 0.125 0.0017 98.6 99.9
84.3123 84.1228 84.2854 75.2512 0.140 0.0024 98.3 99.8
91.7375 91.5300 92.4794 84.9563 0.146 0.0040 97.3 99.8
91.6358 91.4547 92.2143 86.6306 0.109 0.0035 96.8 99.8
92.6113 92.3451 92.0887 84.9574 0.139 0.0052 96.2 99.7
91.7952 91.5008 92.0913 83.7113 0.163 0.0057 96.5 99.7
92.4280 92.1996 91.6510 84.2101 0.145 0.0044 97.0 99.8
92.0812 91.8665 92.2648 84.5889 0.149 0.0042 97.2 99.8
91.2535 91.0306 92.6065 82.8501 0.190 0.0043 97.7 99.8
92.1844 91.8916 91.8916 87.3390 0.089 0.0057 93.6 99.7
92.0386 91.7536 92.2745 86.6716 0.109 0.0055 94.9 99.7
91.7261 91.4979 91.9637 85.5702 0.124 0.0044 96.4 99.8
92.0240 91.7465 91.8909 85.4536 0.125 0.0054 95.7 99.7
92.2309 91.9789 92.5770 84.2410 0.162 0.0049 97.0 99.7
92.4684 92.2588 92.7352 86.1617 0.127 0.0041 96.8 99.8
92.0550 91.7859 92.6767 86.2616 0.124 0.0052 95.8 99.7
92.3519 92.0887 92.2289 86.5410 0.110 0.0051 95.4 99.7
92.6865 92.3830 91.9448 85.6164 0.123 0.0059 95.2 99.7
92.5438 92.2659 92.3662 83.3704 0.174 0.0054 96.9 99.7
92.8275 92.4355 92.1311 80.9879 0.216 0.0076 96.5 99.6
92.4569 91.9713 92.5110 85.5583 0.135 0.0094 93.0 99.5
92.3469 92.0178 92.3417 84.2607 0.156 0.0064 95.9 99.6
92.3586 92.0006 92.3068 86.6469 0.110 0.0069 93.7 99.6
91.9752 91.5804 92.2442 85.6391 0.128 0.0076 94.1 99.6
92.2527 91.6706 92.0092 83.0400 0.167 0.0113 93.2 99.4
92.4342 91.9398 92.3782 83.8872 0.164 0.0096 94.2 99.5
-
長崎県19
質量(g) 腐食速度
（mm/y） 防食
率(%)
防食
効果
(%)防食時(P) 無防食時(C)
番
号都道
府県港・湾名
設置
年数
水深
(m)
4.4
－ 3.0
2.1
2.1
18 福岡県 北九州港
1.1
2.0
3.2
17 広島県 - 0.6
-
- 69 -
設置前 設置後 設置前 設置後 C P
-3 177.0180 176.8253 177.9998 172.6257 0.092 0.0033 96.4 99.9
-6 177.0865 176.9486 178.3280 174.1366 0.072 0.0024 96.6 99.9
-9 177.5972 177.4406 177.9134 173.7630 0.071 0.0027 96.2 99.9
1.9 -0.5 160.1700 159.9800 158.4400 153.1300 0.064 0.0023 96.4 99.9
1.4 -0.5 155.9100 155.6500 165.9100 150.9900 0.140 0.0024 98.3 99.8
83.1412 83.0462 83.7062 65.9574 0.081 0.0004 99.5 99.9
83.6100 83.4799 84.2297 67.1993 0.077 0.0006 99.2 99.8
83.3664 83.2074 83.6925 67.1590 0.075 0.0007 99.1 99.8
83.5478 83.4183 84.1350 53.6797 0.138 0.0006 99.6 99.8
83.7777 83.7306 83.9279 58.8812 0.114 0.0002 99.8 99.9
83.4806 83.4198 82.8098 62.3670 0.093 0.0003 99.7 99.9
87.3474 87.2562 84.8149 61.5400 0.171 0.0007 99.6 99.9
86.5601 86.4921 87.2839 73.5623 0.101 0.0005 99.5 99.9
87.8888 87.7537 87.5126 76.6255 0.080 0.0010 98.8 99.8
87.6398 87.5261 87.0201 74.1535 0.095 0.0008 99.2 99.9
87.1425 87.0390 87.5025 67.7615 0.145 0.0008 99.4 99.9
87.7559 87.6134 87.6449 80.7615 0.051 0.0010 98.0 99.8
0.0 83.3603 83.3252 83.9656 65.6678 0.078 0.0002 99.8 100.0
-3.0 82.9976 82.8673 83.3328 70.8282 0.053 0.0006 99.0 99.8
-1 91.7300 91.5883 92.0448 57.9429 0.098 0.0000 100.0 99.8
-3 92.1304 91.8618 91.9388 57.8019 0.098 0.0010 99.0 99.7
-5 91.9656 91.7487 92.0437 74.0990 0.052 0.0010 98.1 99.8
83.4067 83.3926 83.2632 51.6437 0.145 0.0001 99.9 100.0
84.0973 84.0372 84.5317 59.0078 0.117 0.0001 99.9 99.9
84.5463 84.5144 83.9616 57.9976 0.119 0.0001 99.9 100.0
±0 85.6318 85.5355 85.6816 77.3292 0.164 0.0019 98.8 99.9
-2.5 85.5430 85.4591 85.6148 78.9771 0.130 0.0016 98.8 99.9
-5.0 85.2184 85.1023 85.9348 78.5449 0.145 0.0023 98.4 99.9
-3.6 90.9967 90.5815 92.6194 87.4967 0.060 0.0049 91.8 99.5
-4.6 92.3646 92.0242 92.2446 84.8417 0.087 0.0040 95.4 99.6
-5.6 91.3809 91.1704 92.1099 83.3637 0.103 0.0025 97.6 99.8
-2.0 92.2911 92.0414 92.6470 83.4382 0.114 0.0031 97.3 99.7
-7.0 92.2726 91.9675 92.0434 85.0370 0.086 0.0038 95.6 99.7
-12.0 92.0555 91.7817 92.3635 86.1650 0.076 0.0034 95.5 99.7
-2 92.5665 92.4783 92.9653 85.1483 0.106 0.0012 98.9 99.9
-7 92.2443 92.1014 92.9385 86.6679 0.085 0.0089 89.5 99.8
-12 92.5634 92.4319 93.1450 83.3627 0.133 0.0018 98.6 99.9
-3.5 92.6543 92.5008 92.6011 83.5821 0.122 0.0021 98.3 99.8
-4.5 92.9094 92.7940 92.7414 84.1909 0.076 0.0013 98.3 99.9
-5.5 93.1114 93.0123 92.1607 86.5382 0.121 0.0010 99.2 99.9
-2 93.0584 92.9258 93.0250 85.1535 0.113 0.0020 98.2 99.9
-7 93.0012 92.8587 93.3737 85.6767 0.111 0.0020 98.2 99.8
-12 93.3773 93.2576 93.0877 84.3523 0.126 0.0020 98.4 99.9
-3.5 93.3034 93.1593 93.4028 85.9683 0.107 0.0020 98.1 99.8
-4.5 93.3601 93.2205 93.1013 86.0663 0.101 0.0020 98.0 99.9
-5.5 93.4155 93.2796 93.3623 84.5643 0.127 0.0020 98.4 99.9
-2 93.1278 93.0528 93.0934 84.1964 0.128 0.0011 99.2 99.9
-7 93.0622 93.0055 92.2186 83.9478 0.119 0.0008 99.3 99.9
-12 92.4061 92.3596 92.4727 82.8639 0.139 0.0007 99.5 99.9
-3.6 93.1380 93.0828 92.3789 85.8007 0.095 0.0008 99.2 99.9
-4.6 92.8879 92.8204 93.1164 85.9071 0.104 0.0010 99.1 99.9
-5.6 92.3646 92.2868 92.3514 85.9349 0.092 0.0011 98.8 99.9
設置
年数
水深
(m)
質量(g) 腐食速度
（mm/y） 防食
率(%)
防食
効果
(%)防食時(P) 無防食時(C)
番
号都道
府県港・湾名
3.3
3.0
2.8
2.8
20 大分県 別府湾
8.8
2.1
3.5
- 9.5
- 14.3
長崎県19
1.9
- 8.9
- 5.5
-
-
- 70 -
設置前 設置後 設置前 設置後 C P
82.4683 82.3521 81.9224 11.3399 0.146 0.0003 99.8 99.9
82.0168 81.8747 82.2157 19.2067 0.130 0.0003 99.8 99.8
81.9709 81.8602 82.7794 45.9709 0.076 0.0002 99.7 99.9
82.9695 82.8379 82.4247 26.4275 0.116 0.0003 99.7 99.8
82.3248 82.2120 82.9140 25.6601 0.118 0.0002 99.8 99.9
82.3752 82.2596 82.0978 54.5832 0.057 0.0002 99.6 99.9
81.9950 81.8342 82.3628 43.8912 0.158 0.0003 99.8 99.8
82.4947 82.3620 82.4354 54.6221 0.088 0.0003 99.7 99.8
82.7692 82.6111 83.0834 33.5620 0.102 0.0003 99.7 99.8
83.3430 83.2259 81.3934 45.0350 0.075 0.0002 99.7 99.9
81.8579 81.7074 83.4858 59.7875 0.095 0.0003 99.7 99.8
- 2.3 -1.0 92.9336 92.8673 92.7868 83.3820 0.174 0.0012 99.3 99.9
92.8508 92.6983 93.1007 70.9124 0.086 0.0006 99.3 99.8
92.7848 92.6690 92.4823 70.1542 0.086 0.0004 99.5 99.9
93.0470 92.9310 93.1372 85.5391 0.029 0.0004 98.6 99.9
93.0568 92.9618 92.8856 77.6726 0.059 0.0004 99.3 99.9
93.2180 93.1000 93.2573 61.5154 0.113 0.0004 99.6 99.9
93.1741 93.0730 93.2321 60.2295 0.117 0.0004 99.7 99.9
92.8002 92.6536 93.1075 63.0764 0.106 0.0005 99.5 99.8
11.6 93.2154 93.1091 92.6979 64.5458 0.100 0.0004 99.6 99.9
腐食速度
（mm/y） 防食
率(%)
防食
効果
(%)防食時(P) 無防食時(C)
番
号都道
府県港・湾名
設置
年数
水深
(m)
質量(g)
21 鹿児島県
- 3.0
-
10.6
11.6
-
Copyright C 2020 by MPAT All rights reserved. No part of this book must be reproduced by any means without the written permission of the President of MPAT
No.1369
TEL. 046(844)5040 URL. http://www.pari.go.jp/
-
TECHNICAL NOTE
OF
THE PORT AND AIRPORT RESEARCH INSTITUTE
No.1365 February 2020
National Institute of Maritime,
Port and Aviation Technology, Japan
0_表紙目次要旨_200305Synopsis
資料1369付録C_テストピース調査結果
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