无收缩高性能混凝土在地下室外墙中的应用

The application of no-shrink high-performance concrete in underground chamber external wall

本文介绍了无收缩高性能混凝土在厦门瑞景公园三期地下室外墙中的应用情况,通过掺入CMA高性能抗裂防水剂适当补偿混凝土早期、中期和后期收缩,克服了掺一般膨胀剂混凝土早期膨胀不明显、中期膨胀太大而后期回缩太大的缺陷,使混凝土适量膨胀、几乎不收缩,解决了地下室外墙混凝土收缩开裂的难题。

It introduces the application of no-shrink high-performance concrete in underground chamber wall in Xiamen Ruijing Park. By adding CMA high-performance anti-crack waterproof admixture to compensate the shrinkage in early, intermediate and final stage, against the defect that the early stage expansion is obscure and the intermediate stage expansion is too large when adding normal expansion admixture, the concrete has properly expansion and no-shrink, solving the difficult about the shrinkage and crack in underground chamber external wall.