论水化热对大体积混凝土的影响及控制措施..doc

河北农业大学城建学院 本 科 毕 业 论 文 题 目：论水化热对大体积混凝土的影响及控制措施 学 院： 专业班级： 学 号： 学生姓名： 指导教师姓名： 指导教师职称： 二O一四年 六 月 九 日 论水化热对大体积混凝土的影响及控制措施 摘要 随着建筑领域的发展，大体积混凝土工程规模越来越大，基础结构形式日趋复杂。由于大体积混凝土截面面积大、水泥用量大、混凝土浇筑时间过长，内外温差大，温度易收缩而产生裂缝，施工难度较大，水化热的问题也逐步显现出来。因此，本文在分析了水化热对大体积混凝土结构影响基础上，从原材料选择、混凝土养护和设置混凝土后浇带等几个方面，探讨大体积混凝土温度裂缝控制的措施。 关键词：大体积混凝土；水化热；裂缝；预防；控制 Influence of heat of hydration of mass concrete and control measures Abstract Along with the world development in the field of development, large volume concrete project scale is more and more big, infrastructure form are complex with each passing day, technical level is more and more complex, tall building box foundation and raft foundation are large reinforced concrete floor, they often have larger deep beam. Because of the large volume concrete cross section area, large consumption of cement, concrete pouring time is too long, the temperature difference between inside and outside, easy temperature contraction crack, difficulties in construction. Therefore, this paper is to analyze the temperature cracks of large volume concrete, and then the two vibrator, then analyzed the maintenance method and effect analysis of after-pouring zone, with processing and concrete temperature monitoring, study the fine stone concrete filled, finally the common construction quality problems are analyzed. In this paper, although the character is brief, for beginners of big volume concrete has a profound understanding, it has profound theoretical significance and wide practical application. Keywords： Large volume concrete,hydration heat of mass concrete，Control 目 录 TOC \o 1-3 \h \u HYPERLINK \l _Toc27599 1综述 PAGEREF _Toc27599 1 HYPERLINK \l _Toc18293 1.1研究现状 PAGEREF _Toc18293 1 HYPERLINK \l _Toc28215 1.2研究背景 PAGEREF _Toc28215 1 HYPERLINK \l _Toc24127 2水化热对大体积混凝土影响 PAGEREF _Toc24127 1 HYPERLINK \l _Toc27883 2.1大体积混凝土的概述 PAGEREF _Toc27883 1 HY