客运专线高性能混凝土配合比设计作业指导.doc

客运专线高性能混凝土配合比设计作业指导 ，适用于高速铁路。
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　　　客运专线铁路混凝土配合比设计作业指导 中铁某局联合体石太客运专线某标段 项目经理部 二OO五年十一月 目录 1编制目的..........................................................................3 2适用范围..........................................................................3 3依据标准..........................................................................3 4原材料的选择与质量要求.....................................................4 4.1水泥............................................................................4 4.2细骨料........................................................................5 4.3粗骨料........................................................................7 4.4水..............................................................................9 4.5外加剂.....................................................................10 4.6掺和料.....................................................................11 5混凝土配合比设计............................................................12 5.1一般规定.....................................................................12 5.2混凝土配合比设计步骤...................................................18 6混凝土配合比选定试验......................................................28 6.1试验前准备..................................................................28 6.2试样拌制.....................................................................28 6.3拌合物稠度试验............................................................29 6.4表观密度试验...............................................................30 6.5含气量试验..................................................................31 6.6凝结时间试验...............................................................32 6.7泌水率试验..................................................................33 6.8立方体抗压强度............................................................35 6.9抗折强度.....................................................................36 6.10劈裂抗拉强度............................................................38 6.11混凝土抗渗性能............................................................39 6.12混凝土收缩值测定.........................................................40 6.13混凝土轴心抗压强度试验................................................42 6.14混凝土静力受压弹性模量.............................