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| C40大体积混凝土配合比设计及工程应用 | |
| 引用本文： | 苗春,汤俊,缪小星,冯华君. C40大体积混凝土配合比设计及工程应用[J]. 西安建筑科技大学学报(自然科学版), 2007, 39(2): 249-253 |
| 作者姓名： | 苗春 汤俊 缪小星 冯华君 |
| 作者单位： | 1. 同济大学材料科学与工程学院,上海,200092;上海市建筑科学研究院,上海,200032 2. 同济大学材料科学与工程学院,上海,200092 3. 上海申通混凝土制品有限公司,上海,200231 |
| 摘 要： | 通过越洋国际广场大体积混凝土基础工程的施工,对大体积混凝土工程中原材料选用、质量控制和配合比设计等控制温度裂缝的方法进行了实践.温度差是引起大体积混凝土产生裂缝主要原因之一,在越洋国际广场大体积混凝土基础工程中,大体积混凝土配合比设计以控制温度差为目标,充分利用降低水泥用量、掺用粉煤灰和矿粉、延长混凝土龄期、选用缓凝型外加剂等方法在延缓和降低水化热方面的作用,不仅使混凝土达到C40P8的要求,且未产生裂缝和渗透,达到工程设计要求.工程温度监测记录和强度评定结果表明:本工程的混凝土配合比设计思路和方法取得了良好的效果. |
| 关 键 词： | 大体积 配合比 温度 龄期 裂缝 |
| 文章编号： | 1006-7930（2007）02-0249-05 |
| 修稿时间： | 2006-01-24 |
C40 mass concrete mix proportion design and application |
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| MIAO Chun,TANG Jun,MIAO Xiao-xing,FENG Hua-jun. C40 mass concrete mix proportion design and application[J]. Journal of Xi'an University of Architecture & Technology, 2007, 39(2): 249-253 | |
| Authors: | MIAO Chun TANG Jun MIAO Xiao-xing FENG Hua-jun |
| Abstract: | In the mass concrete foundation construction of shanghai yueyang international plasa,the authors of this paper applied different methods for the selection and quality control of the raw material,as well as for the mix design in exercising control over the crack.Temperature difference is one of the main reasons causing mass concrete crack.In Yueyang foundation construction,the mix proportion design of mass concrete is applied to control the temperature difference by means of reducing cement,adding mineral admixture,extending curing time,and selecting the retarding admixture.In the subsequent quality test,the requirements on strength,crack,leak all proved to be qualified.Both the temperature monitoring record and strength test results show that the measures of mass concrete mix proportion design were successfully applied. |
| Keywords: | mass proportion temperature age crack |
| 本文献已被 CNKI 维普 万方数据 等数据库收录！ | |
