Evaluating performance characteristics of recycled aggregate concrete: A study through experimentation

Abstract

This study surveys the display characteristics of Recycled Aggregate Concrete (RAC) through experimentation, focusing on key material properties and mix degrees. The RAC blends, signified as R-0 and R-45 addressing various rates of Recycled Concrete Aggregate (RCA) substitution, were examined for new properties, compressive strength, and solidness. The blend extents included concrete (C), fine aggregate (FA), natural coarse aggregate (NCA), RCA, silica fume, water, and superplasticizer (SP). New properties, for example, compaction factor, alongside 28 days compressive strength, were determined for all RAC blends. Sturdiness tests included corrosive opposition, scraped area obstruction, and water penetrability tests. Results showed that RAC displayed decreased compressive strength and expanded weight reduction contrasted with traditional concrete (R-0) when exposed to corrosive assault. Be that as it may, the compressive strength decrease was less articulated in RAC exposed to sulfate assault, credited to the arrangement of ettringite. Scraped area obstruction tests uncovered that R-45 had higher normal misfortune in thickness contrasted with R-0 however remained inside adequate cutoff points. Water porousness tests showed higher profundity of entrance in RAC contrasted with R-0, conceivably because of stuck mortar. Nonetheless, both RAC and R-0 showed satisfactory water assimilation values. The study suggests that RAC could offer viable alternatives in construction applications while addressing sustainability concerns. Further research is recommended to explore RAC's performance under elevated temperatures and correlate split tensile strength with corresponding results.