| 商品混凝土收缩变形的试验 |
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| 引用本文： | 陈萌,刘立新,彭少民. 商品混凝土收缩变形的试验[J]. 工业建筑, 2007, 37(6): 70-72,94 |
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| 作者姓名： | 陈萌 刘立新 彭少民 |
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| 作者单位： | 郑州大学,土木工程学院,郑州,450002;武汉理工大学,土木工程与建筑学院,武汉,430070 |
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| 摘 要： | 对28个商品混凝土无筋构件的收缩变形进行360d持续的量测,对混凝土龄期、混凝土抗压强度、构件所处的环境条件和构件尺寸这4个因素对收缩的影响进行分析。通过对67组试验数据的回归分析,得出标准条件下考虑混凝土龄期及抗压强度的收缩基本方程;在此基础上,依据试验数据并参考其他试验资料,采用多系数叠加法确定环境中的温湿度影响系数及构件尺寸影响系数,并得出非标准条件下商品混凝土的多系数收缩变形估算公式,公式的计算结果与130组实测收缩变形吻合良好。
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| 关 键 词： | 商品混凝土 收缩 变形 |
| 修稿时间： | 2006-08-02 |
AN EXPERIMENTAL STUDY ON SHRINKAGE DEFORMATION FOR COMMERCIAL CONCRETE |
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| Chen Meng,Liu Lixin,Peng Shaomin. AN EXPERIMENTAL STUDY ON SHRINKAGE DEFORMATION FOR COMMERCIAL CONCRETE[J]. Industrial Construction, 2007, 37(6): 70-72,94 |
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| Authors: | Chen Meng Liu Lixin Peng Shaomin |
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| Affiliation: | 1.School of Civil Engineering, Zhengz-hou University Zhengzhou 450002;2.School of Civil Engineering and Architecture, Wuhan University of Technology Wuhan 430070 |
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| Abstract: | The shrinkage deformation of 28 commercial concrete members is measured on series 360days, and the concrete age, the compressive strength, the environmental condition and the dimension of member are analyzed in detail. Based on 67 experimental data, considering the effect Of the concrete age and the compressive strength, the basic formula of shrinkage is gained under standard condition by aggression analysis; Furthermore, the multi-coefficient formula of shrinkage for commercial concrete under non-standard conditions is gained by Multi-coefficient superposition method, and in the formula, the temperature-relative humidity coefficient and the dimension coefficient are considered. The calculation result of the multicoefficient formula agrees well with the 130 experimental datas. |
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| Keywords: | commercial concrete shrinkage strain |
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