混凝土骨料料径缺失的配合比设计调整

Design Adjustment of Concrete Mix Proportion in Case of Missing of Certain Grain Sizes of Aggregates

南水北调中线工程天津干线使用混凝土骨料由于存在级配不良问题,通过掺配的办法进行级配优化,有效的解决了骨料级配不良问题。调整后的粗骨料级配能确保工程质量,可用于施工。

Because of imperfect gradation of concrete aggregates used in the Tianjin trunk section concrete of the South--to--North water diversion middle route project, the gradation of concrete aggregate was optimized by blending materials. As a result, satisfactory gradation of concrete aggregates has been obtained.