The IUP Journal of Structural Engineering
Strength Properties of Concrete by Partial Replacement of Cement with Egg Shell Powder and Fly Ash: An Experimental Study

Article Details
Pub. Date : April, 2021
Product Name : The IUP Journal of Structural Engineering
Product Type : Article
Product Code : IJSE40421
Author Name : M Vijaya Sekhar Reddy and K Chandrasekhar Reddy
Availability : YES
Subject/Domain : Science and Technology
Download Format : PDF Format
No. of Pages : 8

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Abstract

The carbon dioxide produced by cement industries causes environmental pollution and global warming. In 1000 Kg of cement manufacturing processes, approximately 900 Kg of CO2 is emitted. In order to reduce the impact of cement production on atmosphere, waste bi-products are used as admixture. In India, every year 75 million tons of fly ash, which are rich in silica, are disposed to landfill as waste. Also, Egg Shell Powders (ESP), which are rich in calcium, are thrown away as waste. In the paper, these two wastes are used as a partial replacement of cement, and various properties like workability, compressive strength, split tensile strength and flexural strength are studied. ESP was varied up to 15.0% (0%, 2.5%, 5%, 7.5%, 10%, 12.5% and 15%) and fly ash was added to cement from 0% to 30% (0%, 5%, 10%, 15%, 20%, 25% and 30%). The results further showed that addition of fly ash along with ESP is beneficial for improved performance of concretes.


Description

The development of a nation depends on not only technology but also infrastructure. Without concrete, infrastructure is not possible. The major element of concrete is cement. Since cement price is volatile and demand is so high, an alternate material can be used for replacement of cement. Several replacement experiments have been done for coarse and fine aggregates and limestone powder substitution for cement makes sense in concretes, saves money and energy, and reduces carbon dioxide emissions. Furthermore, lime production involves energy-intensive process and consumes water.

In 2004, ASTM International C150 allowed incorporation of 5% mass fraction of limestone in ordinary Portland cement (ASTM, 2004). Hawkins et al. (2003) reported that use of 5% limestone does not affect the performance of Portland cement. Bentz et al. (2009) reported that higher limestone percentage can also be used in concrete


Keywords

Fly Ash (FA), Egg Shell Powder (ESP), Compressive Strength, Split Tensile Strength and Flexural Strength

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