云南石门坎水电站混凝土骨料碱活性特征研究  

Study on the Charactersitcs of Alkali Aggregate Reaction for the Shimenkan Hydropower Station in Yunnan Province

作　　者：李雷[1] 周益民[1] 王泉伟[1] 

机构地区：[1]黄河勘测规划设计有限公司,河南郑州450003

出　　处：《资源环境与工程》2015年第5期578-582,共5页Resources Environment & Engineering

摘　　要：云南省石门坎水电站挡水建筑物为混凝土双曲拱坝,坝体主要由C9025W8F100和C9020W8F100三、四级配混凝土组成。采用多种方法检测混凝土骨料碱活性,判定骨料具有碱活性反应。参照工程配合比,并添加掺合料配制混凝土,进行碱活性反应抑制试验,评价掺合料的抑制效果。通过计算,估算混凝土安全使用时效。The dam of the Shimenkan hydropower station in Yunnan is arch dam .It is mainly composed of C9025W8F100 and C9020W8F100 three or four graded concrete .Using a variety of alkali reactivity testing methods ,to determine the con-crete aggregate has active alkali aggregate reaction .According to the concrete mixture ratio of the engineering ,and adding admixtures,the alkali active response inhibition experiment is carried out ,to evaluate inhibitory effect of the inhibition of admixture .By calculating ,the authors estimate the use limitation of the concrete in security state .

关 键 词：混凝土骨料 碱活性 抑制效果 使用时效 

分 类 号：TV431[水利工程—水工结构工程] TV41