碱激发矿渣-赤泥新型低碳透水混凝土性能研究.

Pervious concrete was prepared with two industrial solid wastes of granulated blast-furnace slag and Bayer red mud as cementitious materials, sodium silicate solution as alkali activator, and limestone gravel as coarse aggregate. The effects of design porosity, water-binder ratio and aggregate size on the strength and permeability of pervious concrete were studied respectively. The optimal water-binder ratio is influenced by the design porosity and aggregate size. When the design porosity of pervious concrete is 15% and the aggregate size is 4.75-9.50 mm, the optimal water-binder ratio of 0.36 and it has a higher strength and has good water permeability. The mechanics and permeability performance of alkali-activated slag-red mud pervious concrete are better than those of cement pervious concrete, which is in line with the development concept of low carbon and green. [ABSTRACT FROM AUTHOR]