Sustainable Construction: Study of Water Use, Comparing Conventional Plaster to Ready Mix Plaster

International Research Journal of Engineering and Technology (IRJET) e-ISSN: 2395-0056

Volume: 09 Issue: 09 | Sep 2022 www.irjet.net p-ISSN: 2395-0072

Sustainable Construction: Study of Water Use, Comparing Conventional Plaster to Ready Mix Plaster

Assistant Professor, Trinity College of Architecture, Pune, Maharashtra, India. ***

Abstract - Building construction industry has shown tremendous growth over a period both technically and innovatively.Asbuildingmaterialsconsumenaturalresources, theindustrymovedfocustowardssustainableandeco-friendly materials. Water is being a natural resource; use of water should be optimum. During the construction stage, water is used for preparation, casting and curing in traditional/conventional method. The aim of the paper is to putlightonalternativematerialswhichinturnhelpto reduce use of water during plastering of walls.

Key Words: Natural Resource, Water, Traditional Construction,Alternative,Optimum

1. INTRODUCTION

Inconventionalmethodofconstructionplasteringof walls is done majorly with cement mortar. For internal plaster,gypsumcanbeused.Cementmortarrequireswater atstagesofpreparation,casting/applying,andcuring.Ithas been observed that curing activity has more water requirement with more wastage of water. There is no documentorathumbruleforwaterusageonsite.Ithappens because thecost of wateris 0.5% of total cost ofproject. Manytimesithasbeennoticedthatscarcityofwaterisbeing one of the reason for project delay. The research paper includesstudyofalternativematerialswithrespecttowater requirement. It is important to identify optimum use of watercanbedoneby change in materials.Thismakesthe sustainable construction practice which gives additional positiveaspecttoproject.

1.1 Cement Plaster:

Cement Plaster gives a finished surface that is smooth and uniform. Plaster is a layer of cement sand mortarappliedoverthemasonryworkwhichactsasadamp proof coat. The mixing proportion of cement and sand dependsontypeofworkonwhichitisgoingtoapplyand coat. Water requirement during mixing is not controlled. Also additional water is consumed for intense equipment washing.

1.2 Curing Period:

Curing is the important activity which consumes more water. Mostly, it is done by using buckets & jar or directly

with water pipe. Curing period is analyzed both as per IS specification&onsite.

Table -1: ConventionalWaterRequirement Activity Mixing Proportion water cement ration(ltrs)

Curing Days Standard On Site Plaster (CM) 30* 15 3 Int.Plaster (Gypsum) 15 0 0 Note: *W/Cdiffersfordifferentgradesofcement 1.3 Dis-Advantages of Conventional Plaster: 

Quality control isanissueasmixingisdoneon site. 

Time and cost: it involves labor to carry materialsformixing.Hencesurgescostoflabor withtime. 

Water cement ratio: is not followed accurately Hence improper mixing with less strength. 

Cracks on surface:Afterfewdays,cracksare developed on surface. It is due to excessive moisture in background, thickness of coat, rapiddraying,andpoorjointfilling.

Rebound loss ismore.

Hence, Wastage of material

2. ALTERNATIVE MATERIALS:

As alternative materials, there are options with ready mix dry plaster (also with self-curing) and wet mix plasterwithself-curing. Readymixdryplasterismixtureof cement,finegradedsand,polymers,acceleratorsandbinding agents.Aslikeconventionalplastering,theplasterprovides thesamephysicalandchemicalproperties.Itrequires5to7 days of curing that is half of conventional plastering. Also requiresaboutapprox.7litersofwaterper40kgofbagfor

International Research Journal of Engineering and Technology (IRJET) e-ISSN: 2395-0056

Volume: 09 Issue: 09 | Sep 2022 www.irjet.net p-ISSN: 2395-0072

mixing on site. Ready mix plaster is suitable for walls constructedwithconcrete,claybricksandblockswalls.

Features & Benefits: Excellence workability, less rebound,savetime,57daysofcuring.

Method Of Application

Mix 5-6 ltrs of water per40kgbag.Inclean trayonsite. Apply on Clean and pre-wettedsurface. Use a mixture within 1hr.ofmixingwater. 5-7 days of curing is done.

Self-curinghencereduceslabor costforcuringandalsosaves water. Thus a Green Product initiative. Excellent waterproofingcharacteristics, Crackfreesurface

Mix6-8ltrsofwaterper40kg bag.Incleantrayonsite.

ApplyonCleanandpre-wetted surface.

Usemixturewithin1hr.ofafter addingwater.

Overcoatedwithothermaterial after3daysofplastering.

Inveryhightemp.7dayscuring isrequire.

Cost Rs.250perbag Rs.600perbag

2.1 Advantages :

Save Time & Cost: Asitisareadytousemixture, eliminateslabor&timerequiredfordrymixingof materialonsite.

Quality Controlled: Packedproductwithdefined quantitysomixingisqualityachieved.

Crack controlled: As excellent workability and higherstrength.

Rebound is less.

Less Material Wastage.

Water consumption is optimum whilemixing, curingandequipmentwashing.

3. COMPARATIVE ANALYSIS:

Basically comparison is done between the conventionalplasteringandalternativematerialsi.e.ready mix plaster. Analysis based on water requirement for variousstagesistabulated.Colorcodesuggests, Red-maximumuseofwater,

Bottlegreen-minimumand

Blockwork,brickworkand concretesubstrates. ExternalandInternalplastering applicationforrepairand rehabilitationworks.

Product Specification Packaging Size 40Kgs 40Kgs Bulk Density 1.6kg/ltr–1.8kg/ltr DryMix-1.6kg/ltrWetMix1.8kg/ltr(mixedwithwater) Brand ACC MconRasayanPvt.Ltd. Coverag e Area 15-20sq.ft 18-20sq.ft Form Power Powder Binder High grade ACC cement GreyPortlandCement53grade Water Intake 5-6 litres approx.in a bagof40kg 150-200mlperkg(approx8 Litersinabagof40kg) Pot Life 30-50Minutes 100Minutes Thickness 10-12mm 10-15mmpersinglecoat Area Of Application Internal & external surface with brick, blocks etc. Also used for repair and rehabilitationwork.

LightGreen-Moderate.

Bottle/lightGreencolorrecommendsthematerials more sustainable and ecofriendly.

International Research Journal of Engineering and Technology (IRJET) e-ISSN: 2395-0056

Volume: 09 Issue: 09 | Sep 2022 www.irjet.net p-ISSN: 2395-0072

Stages Conventional Plaster Ready Mix Dry Plaster Self-Curing Ready Mix Plaster

Preparatio n/mixing

Yes w.r.t mix proport ion used

Casting/ Application (surface )

Yes 5-6 ltrs per 40kg bag

yes 6-8 ltrs per 40kg bag

yes Surface curing Yes Surface curing yes Surface curing

Curing Yes 15 day Yes 5-7 days No *

• Waterrequirementindryreadymixplasterisvery muchcontrolledandlessthancementmortar.

• In case of ready mix plaster, 5-7 days of curing is donewhichis50%lessascomparetoconventional plastering.

• Curing is totally eliminated in self-curing ready mixplaster.

• Readymixplastersaves cost and time compareto conventionalplastering.

• Hence execution and completion of work and project hassle free.

3. CONCLUSION:

With the use of ready mix plaster is very much understoodthatoptimumwaterisused.Curingperiodgets reduce to 50% where as it is zero percent in self-curing ready mix plaster. It takes a step closer to sustainable construction practice. Government organizations are encouragingforecofriendlyandsustainableuseofmaterials inconstruction.

Readymixplasterdoesnotrequireanyspecialtoolsand laborsforapplication.Nocuringhelpstoreducecostwith time.

REFERENCES