Abstract This study investigates the effect of replacement recycled concrete as coarse aggregates using Densified Mixture Design Algorithm Method (DMDA) in unconfined behavior. DMDA was applied to produce with least void. Compressive strength, flexural strength and split tensile tests were conducted on 7-, 14-, 28- 56-day old specimens. test results showed that specimens 20, 30, 40% RCA replace...

The possibility of using substitute materials for aggregates and cement in concrete were studied reported this paper. Concrete mixtures with untreated recycled coarse (URCA) treated (TRCA) used to prepare two mix groups without slag (Mix I) II). hydrochloric acid (HCl) having different molarities (0.1M, 0.3M 0.5M) before as a material virgin aggregate concrete. mechanical, durability properties...