Investigation into the Engineering Characteristics of Concrete Utilizing Recycled Concrete Aggregate
Keywords:
Alternative materials, Compressive strength, Concrete engineering, Construction industry, Concrete grades, Concrete properties, Environmental impact, Experimental study, Mix proportioning, Recycled concrete aggregate, Replacement ratios, Splitting tensile strength, Sustainable construction, sustainabilityAbstract
In the modern period, sustainability has become necessary in the construction sector. Due to the widespread use of concrete worldwide in new buildings and the demolition of old structures, it is essential to look into substitutes for traditional methods of producing concrete, especially when using Recycled Concrete Aggregates (RCA). This work offers a unique mix proportioning method. It tests the engineering properties of RCA concrete to determine the feasibility of the suggested strategy despite reports that RCA concrete is of worse quality than that made using virgin aggregates.
An array of tests is conducted in this study on two concrete classes, M25 and M40, with three nominal replacement ratios for each grade (0%, 25%, and 50%). The novel mix design for RCA concrete production is explained in this thesis. Six distinct mixes of RCA concrete are subjected to extensive testing to evaluate its engineering properties; the outcomes are systematically compared to natural aggregate concrete. Seventy-two specimens are cast and subjected to a battery of tests, including non-destructive testing, density, slump, splitting tensile strength, compressive strength, and elastic modulus.
