Study of Mechanical Properties of Concrete by Replacement of Natural Coarse Aggregate with Recycled Coarse Aggregate with Metakaolin (original) (raw)

2022, Materials Science and Engineering

This research work investigates the compressive strength of concrete specimens cured at the age of 7 & 28 days, the split tensile strength, and the flexural strength of concrete specimens cured at 28 days. Natural coarse aggregate (NCA) has been replaced with 0 percent, 25 percent, 40 percent, 60 percent, and 100 percent by RCA of construction & destruction (C&D) waste of 30-year-old building and Ordinary Portland cement (OPC) has been replaced with 10 percent metakaolin (MK).To understand the fresh properties of concrete of slump test was performed and to find satisfactory results. To analyze the hardening properties of MK with recycled coarse aggregate (RCA) base mix concrete, compressive strength was measured at the age of 7 and 28 days, and split tensile strength, the flexural strength was measured at the age of 28 days. Based on the experiment's study, it can be concise that the 40 percent substitute of NCA with RCA carried good results with 10 percent MK. This research presents the effect of MK as a cement substitute on the properties of fresh and hardened with RCA.

Sign up for access to the world's latest research.

checkGet notified about relevant papers

checkSave papers to use in your research

checkJoin the discussion with peers

checkTrack your impact