8/10/2019 ar_bricks-21 (1)

1/34

CHAPTER 1

INTRODUCTION

AAC was invented in mid-1923 in Sweden. It is also known as Autoclaved Cellular Concrete (ACC) orAutoclaved Ligtweigt Concrete (ALC). !roduction "rocess o# AAC is #airl$ sim"le. It is made wit made wit

a mi%ture o# #l$ as& lime& cement& g$"sum& an aeration agent and water. Aeration "rocess& im"arts it a cellular

ligt-weigt structure. AAC "roducts are "recast in various si'es and "rovide structure& insulation& and #ire and

mold resistance.

AAC "roducts are o##ered in various sa"es and si'es including ut not limited to locks& wall "anel

#loor and roo# "anels& and lintels. se o# Autoclaved Aerated Concrete (AAC) locks in construction industr$

India o##ers interesting "ro"osition #or various segments in te societ$. *or a "ro+ect develo"er it means #aster an

lower cost construction. *or environmentall$ conscious it means eco-#riendl$ "roducts and #or tose wo occu"

uildings uilt wit AAC locks it means etter sa#et$ and lower energ$ costs #or cooling or eating. !rimar$ ra

material #or AAC is #l$ as.

,ousands o# tonnes o# #l$ as is generated $ termal "ower "lants ever$da$ and its dis"osal is a caus

o# concern. oreover& using #l$ as does not arm te environment at all. In #act using #l$ as takes care o

issues related to dis"osal o# #l$ as. ,ere#ore $ using #l$ as to "roduce AAC "roducts "rovides a sustainale

economic and environment #riendl$ o"tion. At te end it all translates to a etter world #or #uture generations.

1

8/10/2019 ar_bricks-21 (1)

2/34

Types of Aerocon bricksne interesting as"ect o# Aerocon rick is tat it lets te user uild te walls o# wit tetickness o# is coice. Contrar$ to te wall made $ traditional ricks& walls made wit aerocon ricks a

tinner ut are still sustainale.

/owever& de"ending on di##erent various needs o# internal and e%ternal walls&Aerocon ricks are availale in di##erent si'es and varied tickness as #ollows. Aeroconricks are currentl$ availale in tree si'es0 In#ill& umo& and ,ermal locks

2

8/10/2019 ar_bricks-21 (1)

3/34

Infill blocks,e si'e o# te In#ill Aerocon rick is 4 mm and te tickness varies in teranges o# 56&1&126&16&2 mm. ,e main advantage o# In#ill locks is tat te$ can

easil$ re"lace 7 o# te concrete in roo# slas and tus el" in saving signi#icant

amounts o# concrete& steel& laor& water& "laster etc. ,ese locks are es"eciall$ suitale#or uilding roo#s in large column-#ree constructions.

Jumbo blocksumo locks are t$"icall$ in te si'e o# 43 mm& and tickness ranges #rom

56&1&126&16& to 2 mm. ,e uni8ue large si'e o# umo Aerocon ricks results inte usage o# muc #ewer ricks and ence less mortar is re8uired. ,ese ricks are more

suitale #or non-load earing walls& multi-storeid uildings etc.

Therml blocks,ese locks are also called as Aerocool termal locks wose si'e and tickness is

342 mm and 6 mm res"ectivel$. ,ese locks are ideal #or roo#ing since te$dela$ te transmission o# eat #low and also el" interiors remain warm during wintersand cool during summers.

3

8/10/2019 ar_bricks-21 (1)

4/34

4

8/10/2019 ar_bricks-21 (1)

5/34

CHAPTER !

CO"PARI#ION $ET%EEN AEROCON $RIC ANDC'A( $RIC

Comprison be)*een Prme)er AAC $locks Cly $ricks

Au)ocl+e, Aer)e,

Concre)e -AAC.

blocks n, cly

bricks #eril

1 Soil Consum"tion ses #l$ as wic is a ne s8 #t o# car"et

termal "ower "lant area wit cla$ rick

waste "roduct tus walling will consume

no consum"tion o# to" 26.6 kg o# to" soil

soil

2 *uel Consum"tion ne s8 #t o# car"et ne s8 #t o# car"et

area wit AAC locks area wit cla$ ricks

will consume 1 kg o# will consume : kg o#

coal coal

3 C2 ;mission ne s8 #t o# car"et ne s8 #t o# car"etarea will emit 2.2 kg o# area will emit 15. kg

C2 o# C2

< Laour rgani'ed sector wit norgani'ed sector

"ro"er /= "ractices wit ram"ant use o#

cild laour

6 !roduction *acilit$ State-o#-te-art #actor$ nealt$ working

#acilit$ conditions due to

to%ic gases

,a% Contriution Contriutes to >oes not contriute

government ta%es in to government

#orm o# Central e%ce8uer ;%cise& ?A, and

ctroi

5 Si'e 26 mm % 2

8/10/2019 ar_bricks-21 (1)

6/34

The ,+n)/es of Aerocon blocks o+er con+en)ionl cly bricks

Aerocon Dlocks are an innovative "roduct in te green uilding revolution.

Aerocon locks are te new locks in walling materials& sustituting conventionaland environmentall$ unsustainale materials like cla$ ricks& concrete and ollowlocks.

,e raw materials used in te manu#acture o# tese locks are environmentall$ #riendl$and are certi#ied green "roducts. ,e asic raw materials used in "roduction o# Aeroconlocks are Cement& *l$ as& lime and water.

Aerocon locks can e "lastered& "ainted& and dr$ lined or tiled.

Aerocon lock is e%tremel$ ligt& +ust one-tird te weigt o# cla$ ricks or one-#ourt tedensit$ o# =.C.C. ,e$ are muc easier to andle on te site.

,e$ are eas$ to install and can com"lete te construction "rocedure in a sorter s"an incase o# scarcit$ o# laour and in te usage o# mortars. ,e re8uired time to com"lete auilding wit aerocon locks is 13 lesser tan tat o# te conventional uilding materials.

8/10/2019 ar_bricks-21 (1)

7/34

,e edges o# te locks are suc tat te$ allow eas$ workailit$ and accurate dimensioning and are eas$ to cudrill& nail& sa"e and case using ordinar$ wood working tools. !ower tools can e used #or ra"id casing #oemedding service lines Aerocon locks can e cut virtuall$ in an$ sa"e or angle making tem e%tremel$ ada"tale.

Aerocon lock covers te same area as tat 1< cla$ ricks do enaling a #aster construction results insaving o# laour& time and material.

Aerated concrete is "er#ect uilding material #or an$ climate. It is used to uild all kinds o# walls0 e%terioand interior earing and non-earing walls& #oundation walls& "artition walls as #illing agent in #rameworstructures& wall "artitions& #ire division walls& etc.

Aerocon e%cellent termal "ro"erties el"s in saving recurring energ$ costs o# eating and cooling. ,etermal resistance comined wit te ene#its o# termal mass inertia and wole wall coverage eliminateste need #or additional insulation.

Aerocon locks are availale in various si'es and sa"es.,e$ are availale in tree t$"esE In#ill locks& umo

locks and ,ermal locks. ,e$ are included into te categor$ o# Freen Duilding materials ecause te$ don temit ?C

(?olatile rganic Com"ounds) wic cause environmental "ollution.

A"art #rom eing eco-#riendl$ tese locks are also ligt weigt wit ig termal insulation& #ire resistance

sound insulation& ave strengt and durailit$& ave consistent 8ualit$ control and gives a "er#ect #inis wit

dimensional stailit$. Duildings constructed out o# tese locks ensure long term sustainailit$ and save a loo# water during te construction.

;%cluding te eco-#riendl$ caracteristics o# tese locks& te$ are also used in construction #or various ote

reasons. ,ere are a numer o# "rolems involved in ac8uiring te sand and ricks and also te "rices o

tese asic materials are iking u". As te traditional construction materials ave a iger "rice te initiation

o# Aerocon locks acts as etter sustitutes wit a##ordale "rices. >ue to tese reasons te Aerocon lock

are in great demand.

8/10/2019 ar_bricks-21 (1)

8/34

/ence& it is one o# te revolutionar$ materials tat can e used to make te world a etter& greener and cleane"lace to live in. It is a revolutionar$ material tat comines te uni8ue "ro"erties suc as durailit$ and strengtlow weigt& ver$ sim"le construction tecnolog$ and e%cellent environmental "er#ormance.

CHAPTER 0

DE#IN CON#IDERATION#

8/10/2019 ar_bricks-21 (1)

9/34

enerl consi,er)ions

AAC masonr$ com"onents(lock units) can e used to uild load earing or non load earing walls. -lock units used to uild "ilasters. -lock units used to uild ond eams and lintels. Control +oints on AAC rein#orced walls must e "laced at ma%imum 1 #t. o.c.

Ins)ll)ion ui,e Ceck #oundation. =eceiving and distriution o# AAC wall units.

Ins)ll)ion re2uiremen)s ,ools ;8ui"ment ter materials Installing -lock #or "ilasters in #irst course

'yin/ )he firs) course -le+ellin/ course. La$ te #irst course over a semi-dr$ cement mortar levelling ed- GH to 2H tick.

Corner locks are laid #irst and te #irst course sould e com"leted e#ore second course installation.

nce corner locks are "laced a""l$ tin ed mortar& to te vertical +oints #or oter locks. ,in ed mortar 11H inc to 1:H

Cu))in/ blocks -,3us)men)s n, chses.

A and saw or and saw to cut te locks to s"eci#ic lengts.

9

8/10/2019 ar_bricks-21 (1)

10/34

Plcin/ con)rol 3oin)s in firs) course

,ese are vertical +oints taken troug te #ull wall tickness& and #rom ottom to to". 3:H to GH tick. a%imum s"acing etween control +oints sould e 16 #t.

'yin/ )he subse2uen) courses

*or suse8uent courses use onl$ tin ed mortaring on all +oints etween AAC locks.

inimum overla""ing o# vertical +oints etween la$ers sould e

8/10/2019 ar_bricks-21 (1)

11/34

U)ili)ies ins)ll)ion f)er )he *lls re buil)

*or electrical conduits and "i"ing installation& a case is cut using an electrical router or a casing tool.

Jen re8uired de"t o# case is igger tan ma%imum de"t recommended& additional -locks are usedto lodge te "i"es or interru"t wall continuit$.

A#ter installation& te case are #illed wit re"air mortar or cement sand mortar.

Ren,ers

Sur#ace "atcing0=as" lock +oints and oter areas were AAC sur#ace is out o# "lane.

Sur#ace must e cleaned using a scru rus and an$ loose or damaged material e removed. A ruer #loat is commonl$ used to smoot te wall sur#ace.

*ier glass mes0

,is sould e installed directl$ over one la$er o# render in all control +oints& around windows&doors and utilit$ locations.

5inishes

AAC masonr$ walls can e #inised wit stucco & acr$lic te%ture coats& or a comination o# ot& alslaminated stones& ceramic or cla$ tiles& concrete "ieces and ornamental "roducts.

11

8/10/2019 ar_bricks-21 (1)

12/34

R* ")eril

5ly Ash or #n,Ke$ ingredient #or manu#acturing AAC locks is silica ric material like #l$ as or sand. ost o# te AA

com"anies in India use #l$ as to manu#acture AAC locks. *l$ as is mi%ed wit water to #orm #l$ as slurr$

Slurr$ tus #ormed is mi%ed wit oter ingredients like lime "owder& cement& g$"sum and Aluminum "owder i

8uantities consistent wit te reci"e. Alternatel$ sand can also e used to manu#acture AAC locks. A wet a

mill #inel$ grinds sand wit water converting it into sand slurr$.

Sand slurr$ is mi%ed wit oter ingredients +ust like #l$ as slurr$.

'ime Po*,er

Lime "owder re8uired #or AAC "roduction is otained eiter $ crusing limestone to #ine "owder at AAC

#actor$ or $ directl$ "urcasing it in "owder #orm. Altoug "urcasing lime "owder migt e little costl$

man$ manu#acturers o"t #or it rater tan investing in lime crusing e8ui"ment like all mill& +aw cruser& ucke

elevators& etc. Lime "owder is stored in silos #aricated #rom mild steel (S) or uilt using rick and morta

de"ending o# individual "re#erences.

Cemen)

63-grade rdinar$ !ortland Cement (!C) #rom re"uted manu#acturer is re8uired #or manu#acturing AAC locks

Cement su""lied $ mini "lants is not recommended due to drastic variations in 8ualit$ over di##erent atces

Some AAC #actories migt "lan teir ca"tive cement "rocessing units as suc an unit can "roduce cement as well as

"rocess lime. Suc #actories can o"t #or ma+or "lant clinker and manu#acture teir own

12

8/10/2019 ar_bricks-21 (1)

13/34

cement #or AAC "roduction. Cement is usuall$ stored in silos.

ypsum

F$"sum is easil$ availale in te market and is used in "owder #orm. It is stored in silos.

Aluminum Po*,er6Ps)e

Aluminum "owder"aste is easil$ availale #rom various manu#acturers. As ver$ small 8uantit$ o# Aluminum

"owder"aste is re8uired to e added to te mi%ture& it is usuall$ weiged manuall$ and added to te mi%ing

unit.

13

8/10/2019 ar_bricks-21 (1)

14/34

CHAPTER 7

PRODUCTION PROCE##

R* ")eril Prepr)ion n, #)or/e

,e #irst ste" o# AAC "roduction is grinding o# silica ric material (sand& #l$ as& etc) in all mills. *or di##eren

materials& di##erent "rocessing is ado"ted& suc as dr$ grinding (into "owder)& wet grinding (into slurr$) or mi%e

grinding wit 8uicklime (Ca). ,ere are two metods #or mi%ed milling.

ne is dr$ mi%ing to "roduce inding material& and te oter metod is wet mi%ing. Since mos

8uicklime is agglomerate& it sould e crused and ten grinded. F$"sum is normall$ not all milled se"aratel$

It is grinded wit #l$ as or wit 8uicklime& or it could e grinded wit te same miller #or 8uicklime in turn

ter su""lementar$ and cemicals are also ave to e "re"ared. =aw material storage assures te continuou

"roduction and material stailit$.

,e continuous "roduction guarantees te non-sto" on-time su""l$& and te material staili

guarantees te 8ualit$ o# "roducts& since te raw material migt come #rom di##erent sources& wit di##ere

8ualities. =aw material "re"aration storage is te "re-ste" #or "ro"ortioning atcing. ,is "re-ste" guarante

te raw material meet te standard #or AAC "roduction& and it is also #inises te storage& omogeni'ation an

aging "rocess. It is te asic "rocess tat assures te smoot "roduction and "roduction 8ualit$.

Dosin/ n, mi8in/

aintaining ratio o# all ingredients as "er te selected reci"e is critical to ensure consistent 8ualit$ o#

"roduction. ,is is accom"lised $ using various control s$stems to measure and release te re8uired 8uantit$

o# various raw materials. A dosing and mi%ing unit is used to #orm te correct mi% to "roduce Autoclaved

Aerated Concrete (AAC) locks. *l$ assand slurr$ is "um"ed into a se"arate container.

14

8/10/2019 ar_bricks-21 (1)

15/34

nce te desired weigt is "oured in& "um"ing is sto""ed. Similarl$ lime "owder& cement and g$"sum ar

"oured into individual containers using screw conve$ers. nce re8uired amount o# eac ingredient is #illed in

teir individual containers control s$stem releases all ingredients into mi%ing drum.

i%ing drum is like a giant owl wit a stirrer rotating inside to ensure "ro"er mi%ing o# ingredients. Steam

migt also e #ed to te unit to maintain tem"erature in range o# osing unit releases tis mi%ture as "er se

8uantities into molds #or #oaming.

>osing and mi%ing "rocess is carried out continuousl$ ecause i# tere is a long ga" etween carging

and discarging o# ingredients& residual mi%ture migt start ardening and coke u" te entire unit. In modern

"lants& entire dosing and mi%ing o"eration is com"letel$ automated and re8uires minimum uman intervention.

,is entire o"eration is monitored using control s$stems integrated wit com"uter and CC,?

cameras. As wit an$ industrial o"eration& tere is "rovision #or uman intervention and emergenc$ actions

integrated inside te control s$stem.

Cs)in/9 5omin/ n, Pre4curin/

nce te desired mi% is read$& it is "oured into moulds. ,ese moulds can e o# various si'es de"ending on te

"roduction ca"acit$ o# a manu#acturing unit. nce mi% is "oured into moulds& it is read$ #or "re-curing. A#te

casting& te slurr$ in molds will e in te "re-curing camer to #inis #oaming and ardening. *oaming and

ardening actuall$ starts wen te slurr$ is #ed into molds& wic includes gas-#orming e%"ansion and "er#orm

curing to acieve certain strengt& wic is enoug #or cutting. !re-curing is alwa$s done under set tem"erature.

/ence it is also called as M/eating-room-"re-curing.H !re-curing as not a com"licated "rocess& ut sould

avoid viration. "erations must kee" e$es to monitor$ te slur$ cange during #oaming and "rovide #eedack to

dosing& mi%ing and casting "rocess. !re-#orm de#ects (cracking& sinking& etc.&) mainl$ occur during te "rocess.

15

8/10/2019 ar_bricks-21 (1)

16/34

Cu))in/

>uring tis "rocess& te "re-cured lock goes troug cutting and sa"ing& into di##erent si'e sa"es as "e

re8uirements. ,e ig workailit$ and large variet$ o# si'es make AAC "roduction more suitale #or massive

"roduction wit iger mecani'ation.

Cutting can e done mecanicall$ or manuall$. Jit a cutting macine& te "roduction e##icienc$ anddimensional accurac$ is easil$ acieved.

Au)ocl+e, Curin/

A#ter cutting into te desired si'es sa"es& green AAC locks are trans#erred into autoclaves. Autoclaves a

used #or steam curing under "ressure. AAC must e "re-cured and steam cured to #inis te "$sical and cemic

canges& and ten to acieve enoug strengt #or desired usage. A atc o# AAC locks is steam cured #or 1-1

ours at a "ressure o# 12 ar and tem"erature o# 19NC. In ot and umid conditions& AAC locks undergo la

stages o# $dro-termal s$ntesis reaction to trans#orm into a new "roduct wit re8uired strengt and variou

"$sical "er#ormances. Autoclaved curing im"arts inerent "ro"erties and "er#ormance o# AAC.

roupin/

Frou"ing could e te last ste" o# AAC "roduction (in some AAC "lant& te AAC will e #urter "rocessed in

"anels a#ter leaving autoclaves). A#ter te cured AAC leaves te autoclaves& ins"ection and "ackaging is done.

16

Process 5lo* Chr):

5ly Ash ypsum 'ime OPC

Jater

8/10/2019 ar_bricks-21 (1)

17/34

*l$as Jeigt Jeigt Datced

Slurr$ Datced

Datced

!ouring

i%ture

to mi% ingredients

Dricks Casting on ould

>e-molding and Jire Cutting

/i !ressure Steam Curing #or : /ours

;co-Dricks =ead$ #or Sale

"in

R* m)eril

8/10/2019 ar_bricks-21 (1)

18/34

8/10/2019 ar_bricks-21 (1)

19/34

CHAPTER ;

ANA'(#I#

"rke)

Selter is tird skin& according to a Ferman Conce"t& wic im"lies its im"ortance ne%t to uman Skin an

Cloting. ,is also sows te attacment o# uman race to tis #undamental re8uirement.

Duilding aterial accounts #or ma+or com"onent o# te construction cost. >e"ending on te location te$ ca

contriute to - 5 7 o# te cost o# construction. Jit te ever increasing "o"ulation& te demand #or ousin

increases. ,is directl$ creates demand #or tis "rime commodit$ o# uilding.

Add to te aove #act te near$ area o# tis "ro+ect site is undergoing a ma+or in#rastructure revolution. A

=esidential& Commercial& I, com"anies& and Industrial estalisments are coming in& we can conclude tat t

Dlocks unit will "ros"er and #louris in tis environment.

,ere is a central government gadget noti#ication mandating government de"artments and C!J> to use 17*l$ As ased Dricks in teir all constructions-directl$ o# troug contractors. ,is #actor will el" t

marketailit$ o# tis "roduct immensel$.

*l$ As "olic$ o# te Fovernment also mandates tat 27 o# *l$ as Fenerated $ a "ower "lant must e give

#ree o# cost to S; sector on a "riorit$ asis.

18

8/10/2019 ar_bricks-21 (1)

20/34

Crbon Cre,i)s Es)im)es

AAC locks are eing seriousl$ considered #or C> "ro+ects in India #or earning Caron Credits. As te C;

Fenerated is also relativel$ less& #our or #ive suc units can e undled togeter to make a Frou" C> in t

same sactors.

,is "ro+ect is likel$ to generate 1 C;= "er eac 5 or : Cuic eter o# Dlocks "roduction& de"ending on& an

su+ect to te C> metodolog$ ado"ted& and te inter"retation o# additionalit$ and aseline "arameters $ t

validating autorit$.

ust #or a roug estimate o# C;=S& #or an annual "roduction o# average si'e AAC "lant& tat

1CAnnum& we are likel$ to get around 126 C;=s on #ull ca"acit$ !roduction. At "resent market ra

o# 11.6 ;uros "er C;= and P =s. "er ;uro& we can e%"ect to get additional revenue on C;=. Dut we mu

e%"ect to take a cut o# around 2 to 37 o# C;=s& i# we want to #orward sell te C;=s and get te C> "a

s"onsored $ te u$er

19

8/10/2019 ar_bricks-21 (1)

21/34

R* ")eril #ui)bili)y

Almost 967 o# te raw materials can e made suitale #or AAC line troug "ro"er mi% design. Also we ca

ave man$ di##erent mi% designs #or te same denicit$Qsame strengt o# Dlocks. Je will el" $ou to get t

Dest 8ualit$ locks at o"timal cost $ means o# designing "ro"er i% as "er $our in"ut raw materials.

,e #ollowing are asic guidelines (certainl$ not te #inal call) on te suitailit$ o# asic raw materials #or AAC

1: 5ly sh -?.

In,e8 I)em r,e -?.

r4I r4II

(.egree o# amount) R 3

8/10/2019 ar_bricks-21 (1)

22/34

!: 'ime -@4!;?.

I)em r,e

#uper r: 1s)r: !

n,r

A(Ca@g)Oualit$ *raction 7 9 56 6g Oualit$ *raction 7 R 2 6 :

Si2 Oualit$ *raction 7 R 2 6 :

>igestion

s"eed6-16

&min R

>igestion tem"erature & -9

ndigested residue 8ualit$ #raction &7 R 6 13 16

*ineness (.: s8uare ole sieve le#t amount)7 R 1 16 2

C2 Oualit$ *raction 7 R 2 6 5

0: Cemen) -

8/10/2019 ar_bricks-21 (1)

23/34

7: ypsum6Pls)er -04;?.

CaS< 57

g 27

Cloride .67

!re#eral$ ground residue 9Tm 1-167

;: Aluminum Po*er -bou) >:>@?.

,$"e and recommendation #or su""l$ de"end on raw materials and mi% #ormula

etal Content A""ro%. UV67 !owder

22

8/10/2019 ar_bricks-21 (1)

24/34

8/10/2019 ar_bricks-21 (1)

25/34

$: ON TO'ERANCE# O5 AAC $'OC& #IE#

C: ON DENCIT(9 #TRENTH B THER"A' CONDUCTIIT(

24

8/10/2019 ar_bricks-21 (1)

26/34

CHAPTER =

ADANTAE# AND DI#ADANTAE#

A,+n)/es of usin/ Au)ocl+e, Aer)e, Concre)e

'i/h)*ei/h)

AAC locks are aout 67 ligter tan cla$ ricks o# e8uivalent si'e. ,is translates into less dead weigt o

uildings and allows entire structure to e ligter tere#ore reducing amount o# steel and concrete used i

structural com"onents like eams& columns and roo##loor slas.

#in/le pro,uc) solu)ion

Duildings constructed wit AAC do not re8uire se"arate insulation "roducts reducing construction cost& energ

#oot"rint and environmental im"act o# uildings.

25

8/10/2019 ar_bricks-21 (1)

27/34

Esy *orkbili)y

AAC is ver$ eas$ to work wit and can e cut accuratel$ reducing te amount o# waste generated.

En+ironmen)l impc)

anu#acturing o# AAC does not ave ig energ$ re8uirements. oreover since AAC is ligt weigt& it als

saves energ$ re8uired #or trans"ortation and leads to reduced C2 emissions $ trans"ort veicles. Since AAC

made #rom #l$ as an industrial waste "roduct generated $ termal "ower "lants& it o##ers a low cost an

sustainale solution #or toda$ and tomorrow. AAC is a re8uisite #or green uildings.

Esy )rnspor))ion

It is eas$ to trans"ort AAC as it does not su##er #rom ig transit reakage usuall$ associated wit cla$

ricks.

'on/e+i)y

AAC does not lose strengt or deteriorate over time. Duildings constructed wit AAC do not re8uire routine

re"airs tat are re8uired #or uildings using cla$ ricks.

#hor)er Pro3ec) Dur)ion

Duildings can e uilt wit AAC 67 #aster com"ared to cla$ ricks. ,is translates to lower "ro+ec

com"letion times ene#iting "ro+ect develo"ers.

26

8/10/2019 ar_bricks-21 (1)

28/34

Therml Insul)ion

AAC o##ers e%cellent termal insulation. ,is reduces recurring cost o# energ$ re8uired #or eating and coolin

Detter termal insulation also allows usage o# smaller /?AC tan re8uired conventionall$.

Hi/h sur+i+bili)y

illions o# air "ockets in AAC cusion structure #rom ma+or #orce and "revents "rogressive colla"se o# a

uilding. AAC structures are known to maintain structural integrit$ des"ite o# eav$ rains& e%tremel$ low

tem"erature and salt$ air.

27

8/10/2019 ar_bricks-21 (1)

29/34

5ire Resis)nce

>ue to ig #ire resistance o##ered $ AAC& structures made #rom AAC ave iger rate o# survivailit$ in cas

o# #ire.

#oun, Insul)ion

Sound asor"tion "ro"erties o# AAC make it ideal material #or reducing amient noi se.AAC is well-suited

#or estalisments like os"itals and o##ices situated in nois$ areas.

28

8/10/2019 ar_bricks-21 (1)

30/34

Con)ribu)ion )o N)ion

AAC #actories create man$ +os directl$ and indirectl$ creating a social im"act. Along wit tat te$ "a

%e)her Resis)nce

AAC does not deca$& rust& deteriorate or urn. AAC as een #ound to e eart8uake resistant. AAC structures a

known to maintain structural integrit$ in eav$ rains& e%tremel$ low tem"erature and salt$ air.

Pes) Resis)nce

!rimar$ raw material used to manu#acture AAC is #l$ as. *l$ as (or "ond as) is an inert material and does no

allow termites or oter "ests to survive.

;%cise >ut$ and ?A, contriuting to national econom$

29

8/10/2019 ar_bricks-21 (1)

31/34

Pro,uc) Dis,+n)/es

,e ma+or disadvantages o# autoclaved aerated concrete are listed elow.

,e "roduction cost "er unit #or ACC is iger tan oter ordinar$ concrete.

Bumer o# manu#acturer is limited. So& cost will drasticall$ increase in "laces #ar #rom te manu#acturand need to travel a long distance.

It is not as strong as conventional concrete.

?er$ #ew contractors wo are #amiliar wit ACC.

Construction wit autoclaved aerated concrete ma$ will need s"ecial "ermission.

;nvironmentall$ #riendl$

30

8/10/2019 ar_bricks-21 (1)

32/34

CHAPTER @

CONC'U#ION

As a construction s$stem& AAC "rovide signi#icant environment and oter ene#its #or te uilding owner. ,sort and long term e##ect o# using AAC com"ared to man$ oter materials results in lower energ$ consum"tion

reduced o"erating costs& greater sa#et$ and com#ort& and a ealtier and more troule #ree uilding. ,e#eatures "rovide a etter investment #or uilding owner and #or environment.

31

8/10/2019 ar_bricks-21 (1)

33/34

RE5ERNCE#

8/10/2019 ar_bricks-21 (1)

34/34

32