STUDY ON PROPERTIES OF CONCRETE WITH PARTIAL REPLACEMENT OF CEMENT BY USING PUMICE STONE POWDER

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

Volume: 09 Issue: 08 | August 2022 www.irjet.net p-ISSN: 2395-0072

STUDY ON PROPERTIES OF CONCRETE WITH PARTIAL REPLACEMENT OF CEMENT BY USING PUMICE STONE POWDER

1

2

1MM.Tech student, Annamacharya Institute of Technology and Science, Tirupati, Andhra Pradesh. 2-4Assistant Professor, Department of Civil Engineering, Annamacharya Institute of Technology and Science, Tirupati, Andhra Pradesh. ***

Abstract - An The main scope of this study is to find variouspropertiesofconcretewithreplacementofcement bypumicestonepowder.Nowadaysmanyofresearchare going to find the best possible alternate for cement in concrete. In this work pumicestone powder waspartially replacedascementintherange10%,20%,30%,40%.The fresh and hardened properties of concrete with pumice stoneis tobecomparedwithconventionalconcrete.Pumice powder,generated bythestoneprocessingindustry,isan inert by-product possessing excellent cementitious characteristics.Utilizationofpumicepowderinconcretecan reducethecostofconstructionandatthesametimeaddress the waste disposal problem. This study is focused on the strengthpropertiesofpumicepowderinpozzolanconcrete .Theresultsindicatethatthefreshandhardenedproperties ofthemodifiedmixwithpumicestonepowderasimproved considerably.Theuseofpumicepowderasasubstitutefor cement in the concrete mixture also has the ability to improvethecompressive,andtensilestrengthofconcrete.

Key Words: Freshproperties,hardenedproperties,pumice stonepowderandcementreplacement.

1.INTRODUCTION

A naturally occurring light aggregate known as pumice stone,whichresemblesasponge,wascreatedwhenmolten lavaswiftlycooledandsolidified.Lightweightconcretehas been used by ACI for more than 2000 years (American concreteinstitute,2003).Constructionsmadeofstructural lightweightconcretearestillfairlywidespread,despitebeing used much less frequently than ordinary weight concrete today. In comparison to conventional cement, pumice powderhasbenefitssuchasincreasedthermalandacoustic insulation, fire resistance, abrasion resistance, decreased unitweight,hydrationheat,dryingshrinkage,andautoclave expansion. It also has advantages in terms of improved sulphate resistance, sea water resistance, acid resistance, electrical resistivity, and decreased alkali silica reaction expansionandporosity.

1.2PUMICE STONE POWDER

A naturally occurring lightweight aggregate known as pumice stone is created when molten volcanic material suddenly cools. Viscous magma that is primarily siliceous

andrichindissolvedvolatilecomponents,particularlywater vapour,eruptsfromvolcanoesduringeruptionstoproduce pumice.

Pumicecanbeutilisedasalightweightaggregatesinceitis bothlightandrobust.Whenmoltenlavaeruptedfromadeep locationbeneaththe earth's crust,gaswasableto escape, whichiswhytheyweresolight.Dueofitssmallweightand poroustexture,pumicecanfloatforalongtime sometimes years before it ultimately gets wet. The bulk density of pumice,alight-colored,froth-likevolcanicglass,rangesfrom 500to900kg/m3.

1.3 Objectives of this study

This study's primary goals are to compare concrete'sfreshandhardenedqualitieswhenpumicestone powderisusedinplaceofcement.

2. METHODOLOGY

Figure1:Methodology

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3. LITERATURE REVIEW

Thefollowingresearchpaperswerestudiedbeforestarting theprojectwork

A thorough analysis of the characteristics of sustainable concrete employing ash from volcanic pumice as an additionalcementitiousmaterial(2022)

WithregardtotheuseofVPPAinconcreteanditseffectson properties such as workability, compressive strength, flexural strength, splitting tensile strength, and durability performance,thisarticleaimstoprovideathoroughreview oftheliteraturethathasalreadybeenpublishedinthisarea. Additionally, by using a scanning electron microscope to investigatethemicrostructureofconcrete,thisarticleseeks to determine how VPPA affects sustainability (SEM). The study's findings showed that using VPPA with partial substitution decreased workability and compressive strength,butenhancedperformanceinsplittensilestrength, flexuralstrength,anddurabilitycharacteristics.Thisessay alsoemphasisestheneedforadditionaldevelopmentsinthis areaofresearch.

2.Evaluationofthemechanical,thermal,andmorphological characteristics of polyester composites reinforced with modifiedcornhuskpumicepowder(2022).

The SBA/CHF composites' mechanical and thermal propertiesweregreatlyenhanced.ThestrongestSBA/CHF interfacebondsinthecompositeswereresponsibleforthe composite with 5:30 volume fraction (JPA) having the highest values of tensile strength (18.61 MPa), tensile modulus (3.23 GPa), flexural strength (36.12 MPa), and flexuralmodulus(3.39GPa)amongallthecompositesand the polymer matrix. While a significant number of CHF pullouts contributed to the composite specimens' lowest values being recorded. Similar to how JPA composites performedbetterintermsofthermalstabilitythantheother composites. According to the morphological investigation, CHFpulloutincreasedastheamountofCHFincreasedand decreased as the amount of SBA increased and became evenly distributed throughout the composite. The results showthattheCHF/SBAcompositeshadbettermechanical characteristicsthanthefiber-glasscomposites.

4. MATERIAL PROPERTIES

4.1 Cement

Table1:PropertiesofCement

4.2 Pumice stone powder

Table2:pumicestonepowder

4.3 Coarse aggregate

Table3:Coarseaggregateproperties

4.4 Fine aggregate

Table4:Fineaggregateproperties

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4.5 Water

Workability,compressivestrengths,permeabilityandwater tightness,durabilityandweathering,anddryingshrinkage potential for cracking are all controlled by the precise amountofwaterinconcrete.Itmakesthemixtureworkable andservesasalubricantforthefineandcoarsematerial.It joinscementchemicallytocreatethebindingpaste.Itisused todampentheaggregatesurfacetostopitfromabsorbing thewaterthatisessentialforchemicalaction.

5. Experimental Investigation

5.1 Slump Test

Figure2:Slumpconetest

5.3 Split Tensile Strength

Figure3:Slumpconetestresult 5.2

Compressive Strength

Figure4:CompressiveStrengthresults

5. CONCLUSIONS

Fromthisresearch,thefollowingconclusionswere made,Thefollowingconclusionsweredrawnfromthisstudy:

Concrete elements become less dense when mixed with pumicestonepowder.Theexperimentalresultsalsoindicate that the percentage of cement that is replaced by pumice stonewillenhancetheslumpvalue(Con-.84mm,C90:PS86mm, C 80: PS -88mm, C 70: PS -89mm, and C 60: PS91mm). When compared to other mixes, the compressive strength of concrete made with 30 percent pumice stone powderascementreachesitsoptimumat7days,14days, and28days.However,atallages(7days,14days,and28 days), the strength starts to decline when more cement is added.Comparingdifferentmixes,concretewith30percent pumice stone powder produces the strongest split tensile strength.Itdemonstratesthatcementmaybereplacedwith 30%pumicestonepowdertoprovidethedesiredstrength. Pumicestonepowdercanthereforebeusedasasubstitute

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for cement to create concrete pieces that are lighter in weight.

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