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| 硫酸盐侵蚀砂浆力学性能的声发射试验研究 | |
| 引用本文： | 尹红宇,文红宇,吕海波,赵艳林. 硫酸盐侵蚀砂浆力学性能的声发射试验研究[J]. 混凝土, 2009, 0(6). DOI: 10.3969/j.issn.1002-3550.2009.06.013 |
| 作者姓名： | 尹红宇 文红宇 吕海波 赵艳林 |
| 作者单位： | 1. 广西大学,土木建筑工程学院,防灾减灾研究所,广西,南宁,530004;盐城工学院,土木工程学院,江苏,盐城,224002 2. 崇左市建筑工程质量安全监督站,广西,崇左,532200 3. 广西大学,土木建筑工程学院,防灾减灾研究所,广西,南宁,530004 4. 广西大学,土木建筑工程学院,防灾减灾研究所,广西,南宁,530004;桂林工学院,广西,桂林,541004 |
| 基金项目： | 广西建筑工程检测与试验重点实验室开放基金，广西科技攻关项目 |
| 摘 要： | 采用声发射技术研究不同硫酸盐侵蚀程度下砂浆的单轴压缩应力-应变全过程,分析砂浆受硫酸盐侵蚀后的力学性能退化规律,不同侵蚀期下各水灰比砂浆产生声发射信号的特点,声发射撞击数与相对应力水平的关系.发现侵蚀期越长的试件Hits数值较小,同等应力水平下水灰比小的试块声发射信号更加显著;随着侵蚀期增加声发射撞击数减少,表明硫酸盐侵蚀使声发射活性降低;水灰比大的试块在加载初期声发射活性增加明显,随后较水灰比小的增加缓慢. |
| 关 键 词： | 砂浆 硫酸盐侵蚀 声发射 力学性能 |
Mortar mechanical properties under sulphate corrosion by acoustic emission test |
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| YIN Hong-yu,WEN Hong-yu,LV Hai-bo,ZHAO Yan-lin. Mortar mechanical properties under sulphate corrosion by acoustic emission test[J]. Concrete, 2009, 0(6). DOI: 10.3969/j.issn.1002-3550.2009.06.013 | |
| Authors: | YIN Hong-yu WEN Hong-yu LV Hai-bo ZHAO Yan-lin |
| Affiliation: | 1. Research Institute of Preventing and Mitigating Disasters;College of Civil Engineering;Guangxi University;Nanning 530004;China;2. College of Civil Engineering;Yancheng Institute of Technology;Yancheng 224002;3. Chongzuo Construction Quality and Safety Monitoring Stations;Chongzuo 532200;4. Gulin University of Technology;Gulin 541004;China |
| Abstract: | Using acoustic emission technology,the whole process of stress-strain is researched for the single axel.The mechanism degradation regulation of mortar under different degree of sufate corrosion is analyzed.And with different corrosion periods,various W/C ratios will cause different characteristics of acoustic emission signals.The number of acoustic emission and corresponding stress levels are studied.The results show that the longer the period of erosion of the specimen is,the smaller the Hits numbers are;u... |
| Keywords: | mortar sulfate corrosion acoustic emission mechanical property |
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