Research Study on Self Curing Concrete by using Recycled Aggregate

We don’t imagine any kind of structure without concrete in the present world. It is because of its good compressive strength and durability. The concrete needs 28 days curing to achieve the maximum strength. Lack of proper curing can badly affect the strength and durability. Self-curing concrete is one type of modern concrete, which cure itself by retaining water (moisture content) in it. Generally, in structures like columns the water in the upper part of the structure may evaporate easily when compared to the bottom part. Then structure needs some more water for proper curing. This may increase in the amount of usage of water and if proper curing is not done by the worker that may results into a failure to get the adequate results. So to avoid this self-curing concrete is introduced into the concrete structures to reduce the amount of usage of water while curing. These Concrete needs self-curing agents. The self-curing agents are used to reduce the water evaporation from concrete, and hence increase the water retention capacity of the concrete compared to conventional concrete. The use of self-curing admixtures is very important from the point of view that water resources are getting valuable every day. To achieve proper curing agents like poly ethylene glycol, wax etc. are used as a self curing agent. The main objective of proposed project work is to use the water soluble polymeric glycol as self-curing agent and to decide the optimum dosage for different conditions. In this study water retention, compacting factor and compressive strength of concrete containing self-curing agent is investigated and compared with conventional curing. Concrete weight loss with time was carried out in order to evaluate the water retention ability for different dosages of self-curing agent and for different conditions. This study includes the comparison of natural coarse aggregate and recycled coarse aggregate of different dosages of self-curing agent and for different conditions.