Compressive Strength of Vege-Grout Bricks

Document Type : Primary Research paper

Authors

Assistant Professor Department of Civil Engineering Nehru Institute of Technology

Abstract

Brick is one of largest material used in construction of infrastructure all over the world. A conventional
bricks such as clay brick and concrete brick are produced from clay with high temperature kiln firing
and from ordinary Portland cement (OPC) concrete respectively. Both of this activities lead to CO2
emission. The burning process requires high temperature at the same time release carbon dioxide and
pollute the environment. At present, carbon emissions has become a crucial issues in the society that
must be solved. Several studies had demonstrated that brick can be produced from bacteria based on
Microbial Induced Calcite Precipitation (MICP). The objective of this study is to develop cement freebrick
from vegetables waste with added eggshell as calcium additive to induce biocementation of
brick. Brick specimen was cast in the mould size 210 x 90 x 65 mm and casting for 28 days. The study
showed that there was an increased in compressive strength up to 0.062 N/mm2 as the curing period
increased to 28 days which showed the occurrence of biocementation activ- ities. SEM-EDX analysis
confirmed the presence of calcite precipitation. The result indicated that vege-grout can be used as
binding agent for biocementation to producebricks.

Keywords