OPTIMAL MIXTURE DESIGN OF HIGH PERFORMANCE SELF-COMPACTING CONCRETE

摘要

This paper investigates the reasonable mix design parameters for SCC mixtures such as aggregate content,mineral admixture content and water/cement ratio,based on experimental study of workability and mechanical properties of self-compacting concrete(SCC)with strength grades from 30 to 60 MPa.The results indicate that the volume of course aggregate should be less than 33% and fine aggregate should be between 47% and 51 %,the replacement of cement with fly ash can be 30% to 40% and the water-to-cementitious materials ratios should be less than 0.4.A modified calculation method is proposed,by which the content of each component of SCC mixtures can be determined easily.