AN EXPERIMENTAL STUDY OF FLY ASH CONCRETE WITH STEEL FIBER HOOKED ENDS TO OBTAIN STRENGTH OF M30 GRADE

This paper discussed an experimental study of M30 Grade of concrete using fly ash, steel fiber, cement, coarse aggregate and fine aggregate. Aim of the experimental work was to achieve a proportion of ingredients and obtain strength of M30Grade. To achieve this aim experiments were designed to vary the content of fly ash and steel fiber in cement and other ingredients (fine aggregate and coarse aggregate). The moulds were prepared using coarse aggregate, fine aggregate and the quantity of cement was gradually reduced by adding fly ash and amount of steel fiber was also varied. Two sets of fly ash were varied from 10% to 30% in step to 10% keeping the steel fiber content fixed. In the other set the amount of steel fiber was varied from 0.5% to 2% in step of 0.5% keeping the other parameter fixed. A number of combinations were tried, molded, cured as per prescribed norms and tested as per prescribed norms ((IS Code 456-2000). It was observed that 6.3 kg of cement, 15 kg of fine aggregate, 24.6 kg of coarse aggregate, 0.486 kg of steel fiber, 2.7 kg of fly ash produces the desired strength of M30 Grade of concrete. It is expected that practicing engineer will find this combination to be suitable and use it to construct building with a low cost.