抄録
High quality shotcrete (HQSC) is a new type of shotcrete utilizing own viscosity generated by a mixed powder for the improvement in a construction performance on the tunnel site. Authors investigated the relation among the mix proportion at job site, the physical characteristics of fine aggregate, the correlation, and the properties of strength based on the data from 1997 to 2005 of 119 sites for which HQSC was used, and examined there.
