| 摘要 |
PROBLEM TO BE SOLVED: To provide a high strength concrete (of which compression strength is >=40 N/mm2) having a small self contraction. SOLUTION: This high strength concrete is a cured material of a blended material containing a mixed crushed material of a clinker composition having main mineral of 3CaO.SiO2-2CaO.SiO2-CaO-void material, 3CaO.SiO2-CaO-void material, 2CaO.SiO2-CaO-void material or CaO-void material and containing 50-92 wt.% CaO crystal with gypsum, or a mixed crushed material of the above clinker composition with lime and gypsum, a cement, a water-reducing agent, fine aggregates, rough aggregates and water, and has >=40 N/mm2 compression hardness. It is preferable to have 50-70 cm slump flow rate of the above blended material.
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