| abstract |
[PROBLEMS] To provide a self-leveling material that has sufficiently high workability and curing characteristics even when Portland cement is a main component of a hydraulic component, and in particular, a high surface hardness can be obtained in a short time. The present invention relates to a hydraulic component comprising 40 to 60% by mass of Portland cement, 15 to 40% by mass of alumina cement and 10 to 30% by mass of gypsum, inorganic powder, fine aggregate, and fluidizing agent. And a setting regulator, f. In Portland cement. The content rate of CaO is 0.6-2.0 mass%, and an alumina cement is a self-leveling material whose brane specific surface area is 3800-6000 cm < 2 > / g. [Selection figure] None |