| 混凝土早龄期性能与开裂敏感性的测试技术 |
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| 引用本文： | 杨华全,王迎春,周华,苏杰.混凝土早龄期性能与开裂敏感性的测试技术[J].混凝土,2009(5). |
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| 作者姓名： | 杨华全 王迎春 周华 苏杰 |
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| 作者单位： | 长江科学院,水利部水工程安全与病害防治工程技术研究中心,湖北,武汉,430010 |
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| 基金项目： | 水利部引进国际先进农业科学技术计划(948计划)，国家自然科学重点项目 |
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| 摘 要： | 准确研究与分析混凝土的早龄期性能,是有效评价混凝土开裂敏感性的前提.温度-应力试验机可以同时进行单轴约束试验和自由变形试验,能准确地测量混凝土早龄期的体积变形、抗拉弹性模量和徐变松弛,以及不同约束程度下的应力发展,可准确分析和评价混凝土的早期开裂敏感性.
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| 关 键 词： | 开裂敏感性 混凝土 温度应力试验机 |
Testing technique of the early performances and the cracking sensitivity of concrete |
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| YANG Hua-quan,WANG Ying-chun,ZHOU Hua,SU Jie.Testing technique of the early performances and the cracking sensitivity of concrete[J].Concrete,2009(5). |
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| Authors: | YANG Hua-quan WANG Ying-chun ZHOU Hua SU Jie |
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| Affiliation: | Research Center of Water Engineering Safety and Disaster Prevention of the Ministry of Water Resources;Changjiang River Scientific Research Institute;Wuhan 430010;China |
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| Abstract: | The early performances of concrete are necessarily studied to evaluate the cracking sensitivity of concrete efficiently.Uniaxial restrained test and free deformation test can be carried through simultaneously with the temperature-stress testing machine,which can accurately measure the early deformation,the tensile elasticity modulus,the creep as well as the stress development under different restraints of concrete,analyze and evaluate the cracking tendency of concrete. |
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| Keywords: | cracking sensitivity concrete temperature-stress testing machine |
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