EXPERIMENTAL INVESTIGATION ON PARTIAL REPLACEMENT OF CEMENT WITH COW DUNG ASH

Civil Engineering

The consumption of cement in concrete industries increasing day by day. Concrete is the most widely used construction material in civil engineering industry because of its high structural strength and stability. The most important part of concrete is the cement. Use of cement alone as a binder material produces large heat of hydration since the production of this raw material emits huge amount of CO2. The carbon dioxide emission from cement is very harmful to the environmental changes. The concrete industry is looking for supplementary cementations material with the objective of reducing the carbon dioxide emission which is harmful to environment. The effective way of reducing CO2 emission from the cement industry is to use the industrial by products or use of supplementary cementing material such as ground granulated blast furnaces slag (GGBS), fly ash, silica fume and metakaolin. In this present experimental work an attempt is made to replace cement by Cow dung ash (CDA) to overcome these problems. The cement has been replaced by CDA in the range of 5%, 10%, 15% and 20% by weight of cement for M20 grade mix. It was tested for compressive strength at the age of 7, 14 and 28 days and compared with those of conventional concrete. Results showed that 10% replacement of cement by cow dung ash makes a considerable increase in compressive strength. The present investigation has shown that an addition of 10% CDA to concrete makes it stronger and more durable than conventional concrete

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