Abstract
The object of the study was to develop the admixture, which reduce the rebound and gain the high strength of the wet-mix shotcrete, and to develop the accelerating agent for the shotcrete applying to not only dry but also wet surface of rock. As results, following conclusions were obtained.
1. A viscosity agent was very effective to reduce the shotcrete rebound.
2. High strength shotcrete could be obtained to use silica fume and high fineness blast furnace slag.
