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水工混凝土早龄期收缩发展规律及影响因素试验研究 被引量:4

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摘要 讨论分析了在不同水泥品种、不同水胶比、不同掺和料掺量及其复掺组合情况下,混凝土早龄期收缩变形的变化规律。试验研究分析结果表明,混凝土早龄期收缩变形随龄期延长而增加,但收缩变形速度减缓,且在某一龄期附近明显减缓,故混凝土收缩变形主要发生在早龄期;水胶比对混凝土早龄期收缩变形影响较大,但增加水胶比可以减小混凝土早龄期收缩变形;掺加掺和料可降低混凝土早龄期收缩变形。
出处 《水利水电快报》 2017年第12期49-52,共4页 Express Water Resources & Hydropower Information
基金 国家重点研发计划项目(2016YFB0303601) 国家自然科学基金项目(51479011)
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