阿拉沟水库枢纽工程碾压式沥青混凝土低温施工实践

Construction of roller compacted asphalt concrete core wall under low temperature in Alagou Reservior Project

通过阿拉沟水库枢纽工程施工实践,阐述碾压式沥青混凝土心墙在低温下如何选择和调整沥青混凝土设计配合比。实践结果表明,在层间接合面温度较低时,可以利用上层沥青混凝土温度提高下层温度,从而使心墙层间接合面满足设计要求,并取得了预期效果。

An introduction is made on how to select and make adjustment of mix proportion of asphalt and concrete during construction of roller compacted asphalt concrete core wall under low temperature by construction practice of Alagou Reservoir. The result indicates that, when the temperature at the joint surface is relatively low, using asphalt concrete on the top layer to increase the temperature of the under layer can achieve the expected result and satisfy the requirement of design.