| 大体积混凝土施工裂缝控制技术 |
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| 引用本文： | 陈燕菲,曹新明.大体积混凝土施工裂缝控制技术[J].贵州师范大学学报(自然科学版),2008,26(3). |
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| 作者姓名： | 陈燕菲 曹新明 |
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| 作者单位： | 1. 贵州师范大学,材料与建筑工程学院,贵州,贵阳,550014
2. 贵州大学,土木建筑工程学院,贵州,贵阳,550003 |
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| 摘 要： | 分析研究了大体积混凝土裂缝的成因,提出了优选混凝土原材料、降低水泥水化热、减小混凝土收缩变形;削减温度应力,提高混凝土极限拉伸强度;降低混凝土骨料温度、入模温度、浇筑温度,加强测温工作控制内外温差;掺外加剂和外掺料,主动控制混凝土绝热温升等施工防裂技术措施,结合工程实例探讨了大体积混凝土施工裂缝控制技术。
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| 关 键 词： | 大体积混凝土 施工裂缝 成因 控制 技术措施 |
Constructional cracks control for large bulk concrete |
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| CHEN Yan-fei,CAO Xin-ming.Constructional cracks control for large bulk concrete[J].Journal of Guizhou Normal University(Natural Sciences),2008,26(3). |
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| Authors: | CHEN Yan-fei CAO Xin-ming |
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| Abstract: | This paper studies generation reason of deformation cracks in large bulk concrete and puts forward crack control technical measures,for example,optimizing the raw and processed materials of concrete;reducing cement's hydration heat,concrete's dry shrinkage and temperature stress;enhancing the critical tensile strength of concrete;lowering the temperature of the concrete aggregate,modeling and depositing as well;strengthening temperature monitor and controling interior and exterior temperature differences;mixing with admixture and actively controling the adiabatic temperature rise of the concrete.Besides,this paper also combines with an actual project and probes into large bulk concrete's constructional cracks control. |
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| Keywords: | large bulk concrete constructional cracks generation reason control technical measures |
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