This study aims to show the effect of a modified equivalent mortar volume (EMV) method\non the flexural performance of recycled concrete aggregate (RCA). To verify this, an experimental\nstudy was carried out firstly by testing fresh and hardened material properties of RCA concrete\nspecimens made by two different mixture design methods, i.e., the modified EMV method and\nthe conventional American Concrete Institute (ACI) method. The flexural performance of five\nreinforced recycled concrete (RRC) beams mixed with different mixture designs was then investigated.\nTest results confirmed that the elastic moduli of the RCA concrete specimens made using the modified\nEMV method are greater than those of the conventional ACI mixture, while the drying shrinkage\ntended to decrease. The ultimate strengths of RRC beams mixed with the modified EMV method are\nas much as five percent greater than that achieved with the conventional ACI mixture.
Loading....