| 冻融循环对大尺寸陶粒混凝土冲击压缩性能的影响 |
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| 引用本文： | 邱欣,陈博斐,王甲,陈江瑛.冻融循环对大尺寸陶粒混凝土冲击压缩性能的影响[J].北京理工大学学报,2016,36(S1):94-97. |
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| 作者姓名： | 邱欣 陈博斐 王甲 陈江瑛 |
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| 作者单位： | 宁波大学 机械工程与力学学院, 浙江, 宁波 315211,宁波大学 机械工程与力学学院, 浙江, 宁波 315211,宁波大学 机械工程与力学学院, 浙江, 宁波 315211,宁波大学 机械工程与力学学院, 浙江, 宁波 315211 |
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| 基金项目： | 国家自然科学基金资助项目（11272165，11572163） |
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| 摘 要： | 首次采用卧式Hopkinson束杆装置进行冲击压缩实验，研究了冻融循环试验过程中裂缝发展和动弹性模量变化的规律及冻融循环周次对陶粒混凝土大尺寸试样冲击压缩性能的影响.实验结果表明动态抗压强度随着冻融循环周次的增加而降低，随陶粒体积分数增加而降低，最大抗压强度随加载应变率的增加而增加.
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| 关 键 词： | 冻融循环 大尺寸陶粒混凝土 Hopkinson束杆 冲击压缩性能 |
| 收稿时间： | 2015/9/15 0:00:00 |
Effect of Freeze-Thaw Cycles on the Impact Compressive Properties of Ceramsite Concrete with Large Size Sample |
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| QIU Xin,CHEN Bo-fei,WANG Jia and CHEN Jiang-ying.Effect of Freeze-Thaw Cycles on the Impact Compressive Properties of Ceramsite Concrete with Large Size Sample[J].Journal of Beijing Institute of Technology(Natural Science Edition),2016,36(S1):94-97. |
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| Authors: | QIU Xin CHEN Bo-fei WANG Jia and CHEN Jiang-ying |
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| Institution: | School of Mechanical Engineering and Mechanics, Ningbo University, Ningbo, Zhejiang 315211, China,School of Mechanical Engineering and Mechanics, Ningbo University, Ningbo, Zhejiang 315211, China,School of Mechanical Engineering and Mechanics, Ningbo University, Ningbo, Zhejiang 315211, China and School of Mechanical Engineering and Mechanics, Ningbo University, Ningbo, Zhejiang 315211, China |
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| Abstract: | The influences of freeze-thaw cycles on impact compressive properties of ceramsite concrete with large-sized sample were studied. The impact compressive tests were carried out using the horizontal bundled Hopkinson pressure bars apparatus. The experimental results indicate that the dynamic compressive strength decreases with increasing cycles of freezing-thawing and the increases of volume fraction of the ceramsite. The maximum compressive strength increases with increasing strain rate. The variation of the crack and the dynamic elastic modulus of samples with the different numbers of freeze-thaw cycles are observed in the work. |
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| Keywords: | freeze-thaw cycles (FTC) large sized ceramsite concrete bundled Hopkinson pressure bars impact compressive properties |
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