抄録
This paper describes the effect of siliceous coating on water permeability and pore volume of mortar substrate. Coefficient of permeability and pore volume were measured for evaluation of watertightness of them. Coefficient of permeability and pore volume of coated mortar were obviously less than those of non-coated one. Effect of siliceous coating reached the inside 5 to 10 mm of coated mortar. Reduction of pore volume was caused by the decrease of capillary pores within the size range 0.1 to 1μm. Relationship of them can be described by the equation y = 3.25×10^<-6>x^<3.39>, where y is coefficient of permeability and x is pore volume.
