ANALYSIS OF PROPERTIES OF CONCRETE USING SEA SHELLS CRUSHEDPOWDER AS ADMIXTURE

Vishal Gadgihalli,Lohit Lohit,Meena Meena,Babitha Rani Babitha Rani,Raghavendra Prasad Havanjedinakar

doi:10.29121/granthaalayah.v5.i11.2017.2370

Abstract

The tremendous increment of demand on concrete made admixture one of major component. As admixtures help in enhancement of concrete physical and chemical admixture. In this paper analysis of sea shells as chemical admixture is studied and verified the strength of concrete and temperature emitted due to chemical reaction to the normal Portland cement. As sea shells contain calcium carbonate, CaCo3 as major composition, as calcium is one major component that helps in densifying and hardening of bones in all living things. The flexural and compressive strength has gradually increased; the transmission temperature and reduction time of exothermal reaction has reduced. Hence seashell acts as great admixture.

Highlights

Seashells are hard protective coat created by living organisms in sea, these seashells are exoskeletons of an invertebrate composed as calcium carbonate and calcium.Shells are very often washed up onto a beach empty and clean, as the animal living inside that seashell is dead
The author has experimented by crushing the seashells into fine powder and mixed in concrete as chemical admixture, as seashells contain calcium these may help in increasing strength of concrete and reduces the temperature emitted due to exothermal reaction in concrete
From fig(1), it can be observed that M20 & M30 grade of concrete with seashells as admixture can withstand more compressive load 20.3 and 28.24Mpa compared to normal concrete 19.71 and27.72Mpa by 28 days

Summary

Introduction

Seashells are hard protective coat created by living organisms in sea, these seashells are exoskeletons of an invertebrate composed as calcium carbonate and calcium.Shells are very often washed up onto a beach empty and clean, as the animal living inside that seashell is dead. “ANALYSIS OF PROPERTIES OF CONCRETE USING SEA SHELLS CRUSHEDPOWDER AS ADMIXTURE.” International Journal of Research Granthaalayah, 5(11), 374-378. The author has experimented by crushing the seashells into fine powder and mixed in concrete as chemical admixture, as seashells contain calcium these may help in increasing strength of concrete and reduces the temperature emitted due to exothermal reaction in concrete. These shells must be crushed by hammering and powdered; as seashells are made of calcium it’s difficult to make it into fine powder so as to use it as admixture.

Results

Conclusion