摘要
The main purpose of this research is to study the durability of recycled concrete as a partial replacement of coarse aggregate in corrosive environment. 10%, 20%, 30% and 40% by weight were used for recycled concrete. Concrete samples exposed to 10% concentration dilute sulfuric acid solution for 180 days. Mechanical tests such as compressive and tensile strength tests, physical tests such as ultrasonic pulse velocity, bulk density, porosity, specific gravity and water absorption tests were done to the samples after curing in normal water for 28 days and after submerged in dilute sulfuric acid for 180 days. Degradation increased with increasing of replacement. Test results showed that 10% and 20% partial replacement of recycled concrete aggregate still closely to reference samples. Noticeable deterioration was shown in mechanical and physical properties for 30% and 40% partial replacement of recycled concrete aggregate.
