Result show that the hydration of cement is accelerated by limestone flour at early ages.
结果表明：在水化早期，石灰石粉加速了水泥的水化。
Systematic study on the effacements of deferent fineness, especially ultra-grinding limestone flour, in the performance of concrete is made.
本论文较系统的研究了不同细度，特别是超磨细石灰石粉对混凝土性能的影响。
This paper researched the affection and improvement of ultra-grinding limestone flour as concrete admixtures on the performance of concrete.
作者利用超细石灰石粉作为掺合料配制高强高性能混凝土，研究超细石粉对混凝土性能的影响。
Results indicate that proper quantities of ultra-fine limestone flour can help engineers to decrease the time-loss of concrete slump constant and to increase concrete strength.
适当的掺量可减少混凝土坍落度的经时损失，提高混凝土强度。
Results indicate that proper quantities of ultra-fine limestone flour can help engineers to decrease the time-loss of concrete slump constant and to increase concrete strength.
适当的掺量可减少混凝土坍落度的经时损失，提高混凝土强度。
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