Behaviour of Reinforced Fly Ash Concrete Under Flexure – An Experimental Investigation

Abstract

The main scope of this Behaviour Of Reinforced Fly Ash Concrete Under Flexure-An Experimental Investigation study focuses on the effect of using copper slag as a partial replacement for sand, fly-ash as a partial replacement for cement in addition to concrete steel fibres. Both industries are dumping and disposing materials in the nearby area and generating huge environmental impacts such as land, water and air pollution.

In construction industries, huge amounts of sand from natural river beds affect the groundwater table. Compressive strength, tensile strength and young concrete modulus were measured for all concrete mixtures at the end of 28 days, 56 days and 90 days healing period.

Reinforced concrete beams were casted and at the end of the 28-day curing period their flexural behavior was studied. Replacement mixtures show better than conventional concrete performance. By using concrete by-product materials, the pollution they cause will be reduced.

Concrete is one of the world’s major building materials. In addition to cement and water, aggregate forms one of the main constituent concrete materials as it occupies nearly 55 percent –80 percent of concrete volume. The aggregate types generally used for construction are either coarse or fine aggregate. Many countries are witnessing rapid growth in the construction industry involving the use of natural resources for infrastructure development.

Conclusion

All concrete mixtures have achieved the target strength and all the mixtures show improved compressive strength when compared to the control concrete. The concrete mixture D-9 containing 40 percent fly ash, 40 percent copper slag and 1 percent steel fibers attain higher compressive strength than other mixtures at all curing ages. The concrete mixture D-9 with 40 percent fly ash, 40 percent copper slag and 1 percent steel fibers attain tensile strength in all curing ages compared to other mixtures.