| 风积沙混凝土早期自收缩变形的影响因素研究及数值模拟 |
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| 引用本文： | 李根峰,申向东,吴俊臣,高波.风积沙混凝土早期自收缩变形的影响因素研究及数值模拟[J].硅酸盐通报,2018,37(3):996-1002. |
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| 作者姓名： | 李根峰 申向东 吴俊臣 高波 |
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| 作者单位： | 内蒙古农业大学水利与土木建筑工程学院,呼和浩特,010018 |
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| 基金项目： | 国家自然科学基金(51569021,51769025)%内蒙古博士研究生科研创新基金(B20171012918) |
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| 摘 要： | 为探讨水胶比、砂率及粉煤灰掺量变化对风积沙混凝土早期自收缩变形的影响,采用非接触式混凝土收缩变形测定方法测定不同水胶比、不同砂率、不同粉煤灰掺量下的风积沙混凝土3d内的自收缩,得到表征风积沙混凝土早期自收缩变形规律的收缩率曲线,并利用压汞法测定其微观结构.结果表明,水胶比变化对风积沙混凝土的早期自收缩变形的影响最大,砂率次之,粉煤灰最小;考虑了水胶比(砂率、粉煤灰)的影响下建立了风积沙混凝土自收缩变形规律的数值模型.
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| 关 键 词： | 风积沙混凝土 粉煤灰 水胶比 砂率 自收缩变形 |
Experimental Study and Numerical Simulation on the Influence Factors of Self-shrinkage Deformation of Aeolian Sand Concrete |
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| LI Gen-feng,SHEN Xiang-dong,WU Jun-chen,GAO Bo.Experimental Study and Numerical Simulation on the Influence Factors of Self-shrinkage Deformation of Aeolian Sand Concrete[J].Bulletin of the Chinese Ceramic Society,2018,37(3):996-1002. |
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| Authors: | LI Gen-feng SHEN Xiang-dong WU Jun-chen GAO Bo |
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| Abstract: | In order to investigate the influence of water binder ratio,sand ratio and fly ash content on the autogenous shrinkage deformation of aeolian sand concrete at early age, the non-contact concrete shrinkage deformation method was used to determine the 3 d self-shrinkage of the aeolian sand concrete during different water-cement ratio, different sand rate and different fly ash content.Self-shrinkage deformation law of the shrinkage curve, and the use of mercury intrusion method to determine its microstructure.The results show that the change of water-cement ratio has the greatest influence on the early self-shrinkage deformation of aeolian sand concrete, followed by the sand rate and the fly ash. Considering the influence of water-cement ratio(sand ratio and fly ash)numerical model of self-shrinkage deformation law of sand-accumulating concrete. |
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| Keywords: | aeolian sand concrete fly ash water-cement ratio sand ratio self-shrinkage deformation |
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