| 摘要 |
PROBLEM TO BE SOLVED: To provide a standard specified mix proportion of a paving ready-mixed concrete using a high strength admixture with which curing period can be remarkably reduced as compared to the conventional paving ready-mixed concrete, and also, a bending strength of≥3.5 N/mm<SP>2</SP>attaining traffic release can be obtained. SOLUTION: The maximum dimensions of a coarse aggregate are controlled to 25 mm, the slump is controlled to 6.5cm±1.5 cm, air quantity is controlled to 3.0%±1.0%, the ratio of a fine aggregate is controlled to 38.6%, the ratio between water and cement is controlled to 34.2%, and, the water of 130 kg/m<SP>3</SP>, the early-strength cement of 330 kg/m<SP>3</SP>, the fine aggregate of 707 kg/m<SP>3</SP>, the coarse aggregate of 1,124 kg/m<SP>3</SP>, and the high strength admixture material of 50 kg/m<SP>3</SP>are kneaded. COPYRIGHT: (C)2005,JPO&NCIPI
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