An Experimental Study on the Effect of Fresh & Sea Water on Recycled Coarse Aggregate Cement Concrete

Environmental issues such as climate alteration and related global warming, reduction of natural resource and biodiversity, water and soil pollution, creation of vast quantity of waste materials and their disposal are some of great challenges faced by present day civilization. Recycling of materials and salvage of the material is very important. Recycled concrete aggregates are used in concrete in replacement of nominal concrete aggregates, replacement of various percentages like 10, 20 & 50% have been done. Cubes are curing in sea water solution. After the duration of 7 & 28 days cubes have been tested. This study also enhance the performance of the fresh and hardened properties of a proposed green concrete mixed using construction and demolition waste as a recycled aggregate curing with fresh and sea water. Fresh and hardened properties of the concretes, including workability, strength gain, drying shrinkage, permeability, and microstructure, were characterized and studied. The study reveals that the use of seawater and RCA together has substantial effects on concrete performance. These strategies, however, somewhat reduce the green aspect of the proposed seawater-mixed concrete with RCA.