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建筑工程大体积混凝土施工技术研究摘要大体积混凝土在建筑工程中得到了广泛的应用，在现代工程建设中，占有重要地位，工业与民用建筑中对大体积混凝土的需求越来越多，同时对其质量要求也越来越高。大体积混凝土的施工技术也不断地进行提高。目前在大体积施工过程之中最容易出现的质量通病就是结构的裂缝，结构裂缝给工程质量造成严重影响。而结构的裂缝最主要的原因是因为水泥水化热产生的温度应力超过了混凝土的抗拉强度所造成的。本文通过对大体积混凝土结构裂缝产生原因的分析，总结出对混凝土施工温度的控制措施，从而达到控制温度应力，避免结构裂缝的目的。同时本文对大体积混凝土施工工艺进行了探讨研究，对大体积混凝土后浇带的设计、施工和大体积混凝土冬期施工的防冻和防裂进行了论述，总结出安全可靠的技术措施，通过工程实例验证，取得了较好的施工效果，为大体积混凝土施工积累了资料。关键词:大体积混凝土裂缝温度“三掺”技术目录:第一章绪论~·“···~·~···········“~····~·~一、·“”·….·..·.~..~...……1那一1大体积混凝土的定义····················································...·.……1如一2大体积混凝土裂缝分析······················································……2如一3控制大体积混凝土裂缝的方法分析·······································……7芬1一4本文研究内容·······························································……11第二章“三掺”技术在大体积混凝土中应用的试验研究··················……12犯一1试验研究的目的····························································……12芍2一2膨胀剂、粉煤灰、减水剂的性能··················，····，····，·············……12夸2一3“三掺”混凝土配合比设计及试配·······································……巧胆一4试验结果········································……‘.…‘.’…“’二”“’·”””‘17壮一5试验结果分析·······························································……20芬2一6小结···········································································……24第三章大体积混凝土温度场及温度应力研究····································……25妇一1水泥水化热与混凝土绝热温升······························，···········……25怪3一2混凝土温度及温度应力分析·············································……26妇一3大体积混凝土温度应力的近似值计算·································……28夸3一4控制温度应力，防止裂缝的措施···················，······················……犯第四章大体积混凝土施工方案和施工技术研究·································……34夸4一1大体积混凝土的设计构造要求··········································……34料一2混凝土配合比及其材料···································，···············……35抖一3混凝土的浇筑与养护························……’‘·‘””’‘·’‘”””’“‘’‘”’‘’37芬4一4大体积混凝土“后浇带”的设计与施工·································……40科一5大体积混凝土的冬期施工················································……42大连理工大学工程硕士论文目录第五章大体积混凝土施工实例······························.·...·........................……46夸5一1工程概况·····································································……46夸5一2施工方案及技术措施······················································……46朴一3温度测试·····································································……47扣一4温度测试结果分析·························································……49第六章结束语··············································································……59参考文献······································，···············，············································……60致谢············································································································……61