Hybrid Mode Generalized Design Mix Concrete by using Fly Ash & Manufactured Sand including Coconut Fibers

Due to rapid infrastructure development the outlay of conventional material is greater than ever day by day. Quality control is the major concern in design mix concrete for structural strength consideration. Sometimes conventional materials like cement and sand may not be reached up to the mark of required strength of good quality also. This research paper is intended to lead the advancement of hybrid mode substitution of OPC and river sand by using Fly Ash and manufactured-sand including coconut fibers respectively. In the present research work concrete properties are thoroughly studied to find out the compressive strength, tensile strength and flexural strength of concrete by using fly ash and manufactured sand including coconut fibers in the generalized mix design of concrete. A design mixed generalized procedure has been invented here for 50% cement-50% fly ash sand and 50% natural sand-50 % M-sand to observe changes in the strength of concrete. A comparative study was done and it was concluded that manufactured sand as well as fly ash can be adopted effectively up to 60-65% in concrete mix for better strength including 5% of coconut fibrous to mitigate the environmental disasters.