The proportioning characteristics and performance requirements to admixtures of pavement roller compacted cement concrete are introduced in this paper.

介绍路面碾压混凝土的配合比特点及对外加剂的性能要求；

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For pumping concrete mixture the problem of reducing the cement content and keeping better workability was also solved by using optimum proportioning.

优选配合比解决了泵送混凝土与减少水泥用量和低坍落度的矛盾。

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For pumping concrete mixture the problem of reducing the cement content and keeping better workability was also solved by using optimum proportioning.

优选配合比解决了泵送混凝土与减少水泥用量和低坍落度的矛盾。

youdao