Mechanical properties and water absorption of cement composites with various fineness and contents of waste brick powder from C&D waste

By Zhiming Ma, Qin Tang, Huixia Wu, Jianguang Xu, Chao-feng Liang. Cement & Concrete Composites, 2020

209 citations recorded by the source corpus.

Abstract The use of waste brick powder (WBP) as supplementary cementitious material (SCM) provides an effective approach to reclaiming construction and demolition (CD when the WBP fineness is higher than the cement fineness, the compression strength with WBP contents up to 15% is superior to that without WBP, while the compression strength decreases with WBP incorporation when the WBP fineness is close to or lower than the cement fineness. Incorporating an appropriate WBP content decreases the water absorption of mortar, and the water absorption further decreases with increasing WBP fineness; for example, when the median diameter of WBP is 6 μm and 42 μm, the capillary absorption coefficient of mortar with 30% WBP is 34.1% lower and 10.3% higher than that of plain mortar, respectively. In addition, a similar conclusion is observed for the water distribution in WBP mortar.

Subfields: Building and Construction, Civil and Structural Engineering

View Paper: https://www.semanticscholar.org/paper/f1c6a99a65d797ea3d182b76411a98abb01820ee