2019 Volume 75 Issue 2 Pages 106-124
In order to evaluate the resistance of chloride ion penetration into mortar mixed with granulated blast furnace slag fine aggregate (BFS), the diffusivity of the mortar specimens mixed with several types of BFS produced by seven manufacturers were examined. In addition to this, the effects of the grain size and amorphousness of BFS on the diffusivity of chloride ions was investigated. Furthermore, the improvement mechanism of the diffusivity of chloride ions in mortar using BFS was discussed on from the point of view of porosity, microstructure and fixation of chloride ions. As a result, it was concluded that the improvement of the diffusivity of chloride ions in mortar using BFS was attributed mainly to the densification of the interfacial transition zone of the BFS due to reactions.
