2020 Volume 74 Issue 1 Pages 15-21
This paper describes the influences of chemical composition and fineness of granurated blast furnce slag （BFS） on the hydration and strength of high volume blast furnace slag cement （HVBFSC）. Chemical compositon of BFS is mainly influenced on the strength of HVBFSC and activity index of BFS. It is difficult that the increase fineness of BFS having lower basicity can be improved on the activity index of BFS and hydration of HVBFSC. The same JIS basicity of BFS shows the different activity index of BFS and hydration properties of HVBFSC. The basicity of BFS considering TiO2 and MnO can be selected the lower activity index of BFS and the hydration of HVBFSC. In early hydration of HVBFSC, AFt is mainly produced, But the formation of AFm is increased in the case of HVBFSC containing higher activity BFS.
