Effect of Natural Admixture on Compressive Strength of Silica Fume Blended Concrete

A durable concrete is one that has ability to withstand the damaging effect of the environment and of its service conditions without undue deterioration and excessive maintenance over the design life of a structure. The used of high performance concrete is an alternative in producing high-strength concrete, durable and construction friendly. In the present investigation, experimental results on compressive strength and UPV of concrete made with various mixture proportions i.e., silica fume (0%-20%) and egg (0%-0.35%) have been presented. The increasing trend in compressive strength and UPV values observed from 0% egg dosage to 0.35% egg dosage at all curing periods. At 0.5% egg dosage the compressive strength and UPV values have decreased at all ages. Similar trend has been observed for the other silica fume proportions i.e. from 10% to 15%. At 20% silica fume dosage, all the values have decreased when compared to the 15% silica fume dosage mixes. From the results it is observed that 0.35% egg dosage and 15% silica fume dosage can be taken as optimum dosages.