Abstract:In order to study the effect of recycled ceramic aggregate different types and replacement rates on the compressive strength and elastic modulus of concrete, recycled ceramic fine aggregate was used to replace natural river sand with the quality of 0%, 10%, 20%, 30%, 40%, 50%, 60%, 70%, 80%, 90% and 100% replacement rate to produce recycled ceramic fine aggregate concrete (CRFC). On the basis of completely replacing (100%) natural fine aggregate with recycled ceramic fine aggregate, recycled ceramic coarse aggregate is used to replace natural gravel with quality of 0%, 10%, 20%, 30%, 40%, 50%, 60%, 70%, 80%, 90% and 100% replacement rate to produce recycled ceramic coarse and fine aggregate concrete (CRC). The physical and mechanical properties of CRFC and CRC were studied, and the feasibility of waste tile ceramics as recycled concrete aggregate was analyzed. The results show that: 1) Recycled ceramic coarse and fine aggregate adopted in this paper are in line with the designed standards; 2) Recycled ceramic concrete is lighter than ordinary concrete, and its workability reaches ordinary concrete after adding additional water; 3) Recycled ceramic coarse aggregate has a significant effect on the reduction of compressive strength and elastic modulus of concrete compared with recycled ceramic fine aggregate; 4) The fracture failure of CRFC occurred in transition zone between natural coarse aggregate and cement mortar, while CRC mainly occurred in the interior of recycled ceramic coarse aggregate. 5) When replacement rate of CRC is greater than 50%, the crushing index of recycled ceramic coarse aggregate is the decisive factor for compressive strength.