抄録
It was considered that the influence which the difference between a place of production and grading of silicate sand has on mortar quality and a permeability of the waterproof agent of cement for concrete construction. When the continuation grading of the silicate sand used, select the kind and grading of silicate sand. It was also found that since the amount of water permeability became unknown only by a water permeability ratio when evaluating water permeability, it turned out that a subject remains. It is necessary to select in consideration that the kind of silicate sand and grading to be used.
