Water sorptivity and chloride diffusivity of oil shale ash concrete

摘要

A large quantity of oil shale ash is discharged form ebullition furnaces combusting oil shale to generate electricity in China. Economic and environmental benefits can be achieved if a large portion of the oil shale ash is utilized as a building material. This Paper describes the use of oil shale ash as a partial replacement material for cement. The test results show that for replacement Levels between 5 and 20 /100, the oil shale ash, though not as effective as silica fume, could increase the strength, decrease the water Sorptivity and chloride diffusivity of concretes with a range of varying water to total cementitious materials ratios between 0.28 And 0.50.