| 摘要 |
PROBLEM TO BE SOLVED: To provide a paste composition capable of exhibiting high compressive strength early only with a curing at a room temperature and reducing self shrinkage strain while having high toughness.SOLUTION: A paste composition contains cement, silica fume, water, water-reducing agent, antifoamer, expansive additive, shrinkage-reducing agent, an inorganic fine powder and a high tensile strength fiber. The cement contains 40.0 to 75.0 mass% of CS and less than 2.7 mass% of CA and has a residue after 45 μm sieve of less than 25.0 mass%, the inorganic fine powder contains at least one kind of fine powders selected from a group consisting of a limestone powder, a silica stone powder, a crushed stone powder and a slag powder, and a mixture contains 86 to 100 mass% of particles having a particle size of 0.15 mm or less and 70 mass% or more of particles having the particle size of 0.075 mm or less when the inorganic fine powder is mixed. |
