Experimental Study on Compressive Strength and Elastic Modulus of Recycled Ceramic Concrete
[Objective]Recycled ceramic fine aggregate was used to replace natural river sand with a quality of 0,10%,20%,30%,40%,50%,60%,70%,80%,90%,and 100%replacement rate to create recycled ceramic fine aggregate concrete(CRFC)to investigate the effects of various types and replacement rates of recycled ceramic aggregate on the compressive strength and modulus of elasticity of concrete.[Method]To create recycled ceram-ic coarse and fine aggregate concrete(CRC),natural gravel was substituted based on the replacement rate of recy-cled ceramic fine aggregate(100%)with natural fine aggregate.The physical and mechanical properties of CRFC and CRC were investigated,as well as the viability of using wasted tile ceramics as recycled concrete ag-gregate.[Result]The results show that:The workability,compressive strength,and elastic modulus of CRFC made with recycled ceramic fine aggregate are similar to those of normal concrete.As the replacement rate of re-cycled ceramic coarse aggregate increased,the compressive strength and elastic modulus of CRC dropped dra-matically.[Conclusion]Waste ceramic bricks can be utilized as coarse and fine aggregate in concrete prepara-tion.To ensure concrete workability while utilizing recycled ceramic coarse aggregate,additional water should be supplied by its water absorption rate.The bond strength in the interfacial transition zone and coarse aggregate type are the main factors influencing the failure patterns of CRFC and CRC,respectively.It is suggested that the replacement rate of recycled ceramic coarse aggregate is less than 50%when natural fine aggregate is totally re-placed by recycled ceramic fine aggregate.
万方数据
维普
