Experimental Charcterization of Strength of Self Curing Concrete

Today concrete is most widely used construction material due to its good compressive strengt h and durability. Depending upon the nature of work the cement, fine aggregate, coarse aggregate and water are mixed in specific proportions to produce plain concrete. Plain concrete needs congenial atmosphere by providing moisture for a minimum period of 28 days for good hydration and to attain desired strength. Any laxity in curing will badly affect the strength and durability of concrete. Self-curing concrete is one of the special concretes in mitigating insufficient curing due to human negligence paucity of water in arid areas, inaccessibility of structures in difficult terrains and in areas where the presence of fluorides in water will badly affect the characteristics of concrete. The present study involves the use of shrinkage reducing admixture polyvinyl alcohol in concrete which helps in self curing and helps in better hydration and hence strength. In the present study, the effect of self curing agent on compressive strength is examined by addition of varying percentage of PVA & Rice Husk Ash. PVA mix ed in water from 0.5%,1%,2%,3%,4% & 5% by weight of cement. It was found that PVA could help in self curing by giving strength on par with conventional curing. It was also found that 3% of PVA by weight of cement was optimum for M20 grade concretes for achieving maximum strength (compressive nature) without compromising workability. Rice Husk Ash mixed in water from 5%,10%,15% & 20% by weight of cement. It was found that Rice Husk Ash could help in self curing by giving strength on par conventional curing .It was also found that 10% of Rice Husk Ash by weight of cement was optimum for achieving maximum strength. In this Paper to study the determining Modulus of elasticity Of Self Curing Concrete.