| 摘要 |
PROBLEM TO BE SOLVED: To obtain a lightweight cured cement product (mortar, concrete) with a high compressive strength, slight variance in the distribution of its specific gravity and mechanical strength, and smooth and beautiful finished surface. SOLUTION: This cured cement product is made from cement, ultra- lightweight fine aggregate <1.2 mm in particle size and >=0.5 but <1 in absolute dry specific gravity, and foamed beads each <=0.6 mm in size, This cured cement product is obtained by curing and solidifying an aqueous admixture of a cement composition containing 5-40 vol.% of the foamed beads based on the total volume of the foamed beads and the ultra-lightweight fine aggregate so as to include 6-10 vol.% of air in the final product.
|
