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Strength Characteristics by Partial Replacement of Cement with Brick Powder

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Strength Characteristics by Partial Replacement of Cement with Brick Powder International Journal of Applied Engineering Research ISSN 0973-4562 Volume 13, Number 7 (2018) pp. 94-99 © Research India Publications. http://www.ripublication.com Strength Characteristics by Partial Replacement of Cement with Brick Powder Sanjay Raj. A Assistant Professor, School of Civil Engineering, Rukmini Knowledge Park, REVA University, Yelankha, Bengaluru, Karnataka, India. Preeti D B, Anil Kumar, Akshay Mangraj UG Scholars, School of Civil Engineering, Rukmini Knowledge Park, REVA University, Yelankha, Bengaluru, Karnataka, India. Abstract transportation from sources & also large scale depletion of The purpose of this research is to study the properties of fresh sources creates environmental problems & to overcome these and hardened states of M40 grade concrete, using Crushed problems there is a need of cost effective alternative and ROCK Powder (CRP) as fine aggregate to full amount of sand innovative materials. with Partial replacement of brick powder at 0%, 5%, 10%, 15% and 20% to existing cement content. This paper Research Significance investigates quantitavely the strength of concrete mix at The most widely used fine aggregate for the different ages. The overall test results revealed that in making of concrete is natural sand, mined from the river beds. concrete mixtures, Crushed Rock Powder can be fully However, the availability of river sand for the preparation of substituted as an alternative material for natural sand (fine concrete is becoming scarce due to the excessive nonscientific aggregate) in presence of Brick powder upto 15%. These methods of mining. Apart from this, issues like lowering of findings guide the practitioner in selecting fly ash and water table, sinking of bridge piers, etc. are becoming Crushed Rock Powder contents to meet the strength and common threats. The present scenario demands identification workability requirements in a concrete mix. The concurrent of substitute materials for river sand for making of concrete. use of two byproducts will lead to a range of economic and The choice of substitute materials for sand in concrete environmental benefits. depends on several factors such as their availability, cost, physical properties, chemical properties, chemical ingredients Keywords: Brick Powder, Crushed Rock Powder, etc. for reducing the cost of concrete and also to meet the Compressive Strength and Split Tensile strength demand. Locally available waste materials, such as pond ash, . ,r ice husk, sawdust, rock powder and ceramic scrap can be Introduction used as alternate materials. Concrete is a composite material composed of fine and coarse This research work reports the potential of using aggregate bonded together with fluid cement (cement paste) Brick Dust Waste (BDW) as a partial substitute for Portland that hardens overtime. Most concretes used are lime-based Cement (PC) in the development of concrete. BDW is concretes such as Portland cement concretes or concretes recycled waste materials that are sourced from the made with other hydraulic cements, such as calcium aluminate demolishing of fired clay brick buildings or the discarded by- cements. However, asphalt concrete, which is frequently used product materials from the cutting of fired clay bricks into for road surfaces, is also a type of concrete, where the cement shape and sizes for the construction of chimneys, and other material is bitumen, and polymer concretes are sometimes uses needing the use of fired bricks. This results in the used where the cementing material is a polymer. disposal of BDW as an environmental problem of concern. When aggregate is mixed together with dry Portland cement and water, the mixture forms fluid slurry that is easily poured Experimental Program and moulded into the shape. The cement reacts chemically with the water and other ingredients to form a hard matrix that Material Properties binds the materials together into a durable stone like material that has many uses. Often, additives (such as pozzolans or Experimental investigation carried out including super plasticizers) are included in the mixture to improve the properties of various materials used and their mix proportions. physical properties of wet mix or the finished materials. Most The details of method of casting of specimens and their concrete is poured with reinforcing materials (rebar) testing procedures are explained. embedded to provide tensile strength, yielding reinforced Cement: In the present work, ordinary Portland cement of 53 concrete. grade RAMCO cement conforming to 12269:1987 is used. Concrete plays the key role and a large quantum of concrete is The physical properties of cement obtained on conducting being utilized in every construction practices. They also appropriate test as per IS 269/4831 and the requirements as studied that natural river sand is one of the key ingredients of per 4031-1968 are given in Table 1. concrete, is becoming expensive due to excessive cost of 94 International Journal of Applied Engineering Research ISSN 0973-4562 Volume 13, Number 7 (2018) pp. 94-99 © Research India Publications. http://www.ripublication.com Brick powder: Bricks were collected and crushed into fine accordance with IS 516-1959 (Reaffirmed 1999) powder from students. It was sieved from IS 4.75mm sieve. Physical properties of brick powder are given Table 1.0. Compression Test Compression test is carried out on specimen cubical Table 1 Physical properties of cement in shape. The cube specimen is of size 150mm. A steel cube Moulds were coated with oil on their inner surface and are Sl. Properties Obtained Requirements as per placed on plate. The amount of cement, Brick powder, M- No values IS: 12269- 1987 sand, And coarse aggregate required for cubes are weighed. 1 Fineness 2.5% Not more than 10% The materials are first dry mixed and then mixed with water 2 soundness 1mm Not more than 10mm and calculated amount of superplastizer. The top surface is 3 Initial setting 45 min Not less than 30min time finished using trowel. After 24 hours concrete cubes are 4 Standard 30% - demoulded and the specimens are kept for curing under water. consistency Table 3: Mix Proportion 5 Specific gravity 3.13 - Fine aggregate: Sl Mix Ceme Brick FA CA Wa Sup M-sand: locally available M-sand is used. Specific n nt Powd Kg/ Kg/m ter erpl 3 3 3 gravity, sieve analysis, bulk density and bulking of fine o Kg/m er m Kg/ asti 3 aggregate tests are carried out and the results are presented in Kg/m m zer 3 Table 2 Coarse aggregate: 1 M40 315.2 0 694.1 1169.1 157. 0.7 Crushed stone of 20mm maximum size have been used as Normal 2 2 6 % Concret coarse aggregate. It was obtained from nearby quarry. e Water: Clean portable water is used for mixing and curing of 2 M40 299.4 15.76 694.1 1169.1 157. 0.7 concrete. 5BPNC 2 2 6 % Admixture: Super plasticizer is used. 3 M40 283.68 31.52 694.1 1169.1 157. 0.7 10BPN 2 2 6 % Table 2 Physical Properties of Brick powder C 4 M40 267.92 47.28 694.1 1169.1 157. Sl. Properties Obtained Properties Obtaine 0.7 15BPN 2 2 6 No values d values % C Brick Powder Fine Aggregate 5 M40 252.16 63.04 694.1 1169.1 157. 0.7 1 Specific 2.71 Specific gravity 2.39 20BPN 2 2 6 % gravity C 2 Water 0.38% Fineness 2.33 absorption modulus Testing of Cube Specimens 3 Bulk density 1.820cc Bulk density 1.82 cc At each desired curing periods specimens of normal 4 Bulking of 45% Bulking of FA 52% concrete are taken out of water and dried. The concrete cubes FA are also taken for the test. The cubes are tested in 200T capacity compression testing machine to get the compressive Variable parameters: strength of concrete. a) M-sand: Natural sand is replaced by M-sand in proper proportions. Split Tensile Test b) Brick powder: Cement is replaced by Brick powder in Direct measurement of tensile strength of concrete is four proportions. difficult. Neither specimens nor testing apparatus have The replacements levels were: 0%, 5%, 10%, 15%, 20%. designed which assure uniform distribution of the pull applied to concrete while a number of investigations involving the Mix Proportions indirect measurement of tensile strength have made. The widely used test is split tensile strength test. Concrete with brick powder: M40 grade of concrete is considered. Natural sand is replaced with M-sand. Cement is Casting of Cylinder Specimens for Split Tensile Test replaced with brick powder in 4 different percentages namely The cylinder Moulds were coated with oil on their 5, 10, 15 and 20%. The mix design for concrete with brick inner surfaces and were placed on plate. The amount of powder is carried out as per IS 10262. Details of mix materials required to produce required number of cylindrical proportion for M40 concrete are given Table 3 specimens are weighed. The materials are first dry mixed and then mixed with water and super plasticizer. The top surface is Experimental Procedures finished using trowel. After 24 hours concrete cylinders are Strength Test on Concrete with Brick Powder demoulded and the normal concrete specimens are kept for The casting and testing of concrete with Brick powder curing under water. specimens for Compression and Split tension are conducted in 95 International Journal of Applied Engineering Research ISSN 0973-4562 Volume 13, Number 7 (2018) pp. 94-99 © Research India Publications. http://www.ripublication.com Testing of Cylinder Specimens Table 4: Compression strength values at 7 days At each desired curing periods specimens of normal concrete are taken out of water and dried. The concrete Sl. Type Binding material Fine Coarse Avg No of aggreg Aggre value specimens are also taken for the test. The cylinders were concret ate gate ( Cement Brick tested in 200T capacity compression testing machine, e conten conten N/mm powde t t 2) applying the load diametrically to get the split tensile strength r of concrete.
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