论文?报告
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ポルトランドセメントを使用しない超低収缩?高强度コンクリートを実用化するため、プレキャスト工场の実机ミキサを用いた製造実験（夏期、标準期、冬期）を行った。柱部材を模拟したブロック试験体（断面寸法：400×400尘尘、1,000×1,000尘尘）を作製し、脱型后の乾湿条件や断热材被覆などの养生条件が部材温度および部材コアの强度発现に与える影响を确认した。実験の结果、スランプフローと空気量は打込み时期の违いによらず安定していた。部材の温度は従来の高强度コンクリートと比べ低くなり、养生温度が低いと部材コアの圧缩强度が小さくなった。断热材被覆养生を施すことで强度発现が促进されることが确认された。 キーワード: ポルトランドセメント不使用、低环境负荷、プレキャスト部材コンクリート、高强度コンクリート、製造方法 |
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Manufacturing experiments (summer, standard period, winter) of ultra-low shrinkage and high strength concrete without portland cement were conducted using an actual full-scale mixer of a precast concrete factory. Mass blocks (cross-sectional dimensions: 400×400mm, 1,000×1,000mm) simulating column members were prepared, and the effects of curing conditions such as wet and dry conditions after demolding and adiabatic foams on the member temperature and the strength development of the member core were investigated. As a result, the slump flow and the amount of air were stable without being affected by the season of manufacture. The temperature of the members was lower than that of conventional high-strength concrete. The compressive strength of the member cores decreased when the curing temperature was low. Strength development was promoted by covering the members with adiabatic foams curing. Key Words: Non-portland cement, Low environmental impact, Concrete for precast members, High strength concrete, Manufacturing method |
论文