Evaluating the Use of Eggshell Waste Ash in High Strength Concrete

Basim Amanah,Wasan Khalil

doi:10.30684/etj.v39i8.2102

Abstract

This study aims to determine the effect of incorporating eggshell waste as partial compensation from Portland cement material on high-strength concrete mixtures' performance. The properties studied are workability, compressive and flexural strengths, water absorption, dry density, and thermal conductivity. In the same trend, the environmental impact of the replacement mentioned above is evaluated. Four different weight percentages (0%,5%,10%,15%, and 20%) of the cement were replaced with eggshells ash. The results indicate that the incorporation of eggshell powder improves the compressive strength and flexural strength by about 14.7% and 6.5%, respectively, at 28days age over control concrete mixes at 15% replacement. The optimum replacement ratio was found to be 15% based on the strength. Furthermore, the results showed a reduction in water absorption and thermal conductivity as 15% of eggshell ash was used as a replacement by cement weight with 10.7% and 10.65 respectively, besides the reduction in the amount of cement used in the mixture. These results are positively reflected in supporting natural resources' sustainability and depleting the ozone layer by reducing the emitted gases.

Highlights

In recent years, growth has increased in all aspects of life, such as in agricultural, industrial, economic, etc., in all countries of the world, which caused a considerable increase in the quantities and types of waste accumulated in these countries
Widespread use of concrete leads to environmental problems from greenhouse gas (GHG) emissions resulting from the extraction and manufacturing stages of its components
It is possible to use the burnt eggshells instead of the natural lime rocks used in cement production, which leads to preserving natural lime and reducing cement use, contributing to the sustainability of natural resources [5, 14].The main objective of this research is to achieve environmental sustainability by getting rid of eggshell waste and using it as a partial substitute for cement in the production of high strength concrete, reducing the content of cement used in the concrete mixture

Summary

Introduction

Growth has increased in all aspects of life, such as in agricultural, industrial, economic, etc., in all countries of the world, which caused a considerable increase in the quantities and types of waste accumulated in these countries. Organic waste is challenging to dispose of by burning or landfilling in the soil. They cause air pollution problems through smoke and toxic gases. Effective solutions are needed to dispose of these wastes that have a harmful environmental impact. The cement industry is one of the most emitting steps of gases as a result of burning limestone at high temperatures, which results in about 8% of the total CO2 globally, and this number could increase to 8-10% in coming years [1, 2, 3, 4]

Objectives

Results

Conclusion