Effect of Recycled Mixed Powder on the Mechanical Properties and Microstructure of Concrete

In this paper, recycled bricks and concrete were applied to prepare eco-friendly mixed powder (RMP) cementitious material, as a supplementary replace conventional cement for improve the recycling of construction demolition waste. Based on effect materials hydration silicate cement, effects RMP workability, mechanical properties microstructure (RMPC) with different replacement ratios 8:4 6:4 mixing ratio brick (RBP) (RCP) investigated. The results showed that fluidity mix decreased increasing RBP RCP, but influence was smaller within 15% ratio. As increases, internal pore structure RMPC tends be loose porous, which exhibits significant volume distribution characteristic. number large capillaries considerably increased at 45%. 7 d compressive strength slightly lower than ordinary concrete. splitting tensile strengths 28 by 4.2% 10.1%, respectively, curing age RCP higher those 8:2. Finally, basis in industry can provided study.