Abstract：To develop a new way for recycling construction waste brick, the construction waste brick powder (CWBP) was compounded with other industrial waste powders to form construction waste composite powder materials (CWCPM). The effects of CWBP and CWCPM on hydration products, microcosmic structure and pore structure of cement based materials were investigated by XRD, DSCTG, SEM and MIP microscopic tests. The results show that the CWBP has poor particle size distribution and morphology with low activity. The CWCPM has good filling effect, and the superimposed effect is beneficial to form packed structure. The secondary hydration reaction of CWCPM can reduce Ca(OH)2 content with poor performance and optimize the pore structure to improve the pore size distribution of concrete.
2017, Vol. 38 
