| 摘要 |
PROBLEM TO BE SOLVED: To provide a method for constructing a concrete floor structure suitable for constructing drainage slope on the concrete floor of a side ditch portion.SOLUTION: A method for constructing a concrete floor structure comprises the steps of: forming a leveling material slurry; installing the leveling material slurry; forming a slope on the surface of the leveling material slurry; and forming a cured layer of the sloped leveling material slurry. The leveling material includes Portland cement, blast furnace slag fine powder, gypsum, fine aggregate, a coagulation conditioner, a defoaming agent, a fluidizer, and a thickener which is a cellulose thickener having a viscosity in the range of 20,000 to 40,000 mPa s. The amount of the thickener is 0.4 to 0.5 mass part relative to 100 mass parts of Portland cement. The leveling material slurry is obtained by adding 21 to 25.5 mass parts of water to 100 mass parts of the leveling material and kneading the mixture. The concrete floor constitutes the floor of a concrete side ditch portion. |
