AN EXPERIMENTAL STUDY ON REPLACEMENT OF RCA IN GEOPOLYMER CONCRETE INSTEAD OF COARSE AGGREGATE

Abstract

Globally, the employment of concrete significantly high-strength concrete has been increasing dayby-day thanks to fast industrial enterprise and infrastructural developments. a huge amount of natural coarse mixture is needed for creating concrete to fulfill the massive demand. The natural resources of coarse mixture ar depleting apace everywhere the globe and desperately have to be compelled to be preserved. On the opposite hand, ample tonnes of construction and demolition (C&D) wastes ar being generated from totally different sources. The disposal of those large quantities of C&D waste is motility an enormous downside to the native administration and surroundings. Further, there ar aras wherever the natural coarse aggregates ar scarcely on the market and are hauled from long distances. These problems got to be addressed desperately. A review of the literature suggests that getting the coarse aggregates from C&D waste may be a attainable resolution to those problems. Therefore, within the gift work, associate degree experimental try has been created to utilize the recycled coarse mixture (RCA) from C&D waste to the utmost attainable extent for manufacturing the high-strength concrete. The experimental work has been distributed in 2 phases: (i) Influence of process technique on RAC and (ii) Influence of blending approaches on RAC. the combo proportion of M75 grade was unbroken constant throughout the study. First, the influence of process technique on the properties of high-strength RAC has been studied to pick out the foremost appropriate processed recycled mixture for creating high-strength concrete. within the second part, the influence of assorted two-stage mixture approaches on the properties of high-strength RAC has been studied to pick out the foremost acceptable two-stage mixture approach at the moment the resultant concrete mixes are: i) Mechanical properties (Compressive Strength, Flexural strength, Split enduringness, ii) sturdiness properties (Acid Reistance , ocean Water Resistance) are studied. And compared with nominal cement concrete