[1]张峰,蔡建军,李树忱,等.混凝土冻融损伤厚度的超声波检测[J].深圳大学学报理工版,2012,29(No.3(189-282)):207-210.[doi:10.3724/SP.J.1249.2012.03207]
　ZHANG Feng,CAI Jian-jun,LI Shu-chen,et al.Ultrasonic detection of freeze-thaw damage thickness of concrete[J].Journal of Shenzhen University Science and Engineering,2012,29(No.3(189-282)):207-210.[doi:10.3724/SP.J.1249.2012.03207]
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混凝土冻融损伤厚度的超声波检测()
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《深圳大学学报理工版》[ISSN:1000-2618/CN:44-1401/N]

卷:
第29卷
期数:
2012年No.3(189-282)
页码:
207-210
栏目:
土木建筑工程
出版日期:
2012-05-21

文章信息/Info

Title:
Ultrasonic detection of freeze-thaw damage thickness of concrete
作者:
张峰1; 3; 蔡建军2; 李树忱1; 牛平霞1; 李守凯1
1） 山东大学岩土与结构工程研究中心，济南 250061
2） 山东高速青岛发展有限公司，山东青岛 266100
3） 旧桥检测与加固技术交通行业重点实验室，北京 100088
Author(s):
ZHANG Feng1; 3;  CAI Jian-jun2;  LI Shu-chen1;  NIU Ping-xia1;  and LI Shou-kai1
1）Research Center of Geotechnical and Structural Engineering, Shandong University, Jinan 50061, P.R.China
2）Shandong Expressway Development Co Ltd, Qingdao 266100,Shandong Province, P.R.China
3）Old Bridge Inspection and Reinforcement Technology Laboratory of the Transport Trader, Beijing 100088, P.R.China
关键词:
混凝土; 盐冻; 冻融厚度;  快冻法; 超声检测;  应力波; 钢筋保护层
Keywords:
concrete;  salt frost;  freeze-thaw damage thickness;  quick freezing method;  ultrasonic detection;  stress wave;  protective layer of reinforcements
分类号:
TU 528.1
DOI:
10.3724/SP.J.1249.2012.03207
文献标志码:
A
摘要:
为分析混凝土结构的冻融损伤厚度，采用快冻法进行引气混凝土试验梁在质量分数为3.5%的NaCl 溶液中的盐冻试验．基于超声脉冲检测方法，依据波速在不同物质中的传播速度差异，对冻融300次后的混凝土试块进行超声检测，得到混凝土冻融损伤厚度．结果表明，该配合比对应的混凝土试块在冻融循环300次后冻融厚度约为30 mm，未超过混凝土结构的钢筋保护层厚度．
Abstract:
In order to analyze freeze-thaw damage thickness of concrete structure, the salt frost test of the concrete beam which was immerged in 3.5% NaCl salt solution was made by a quick freezing method. Based on ultrasonic detection methods, non-metallic ultrasonic instrument was used according to the propagation speed difference of wave velocity in different materials. The damage thickness of the concrete specimen was detected after 300 freeze-thaw cycles. The results show that, the damage thickness of concrete specimen after 300 times freeze-thaw cycles is 30 mm, which is less than the protective layer of reinforcements.

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备注/Memo

备注/Memo:
Received：2010-03-26；Revised：2012-01-04；Accepted：2012-03-06
Foundation：Ph D Programs Foundation of Ministry of Education of China(20100131120042)
Corresponding author：Professor CAI Jian-jun. E-mail: xxf19780311@163.com
Citation：ZHANG Feng，CAI Jian-jun，LI Shu-chen，et al. Ultrasonic detection of freeze-thaw damage thickness of concrete［J］. Journal of Shenzhen University Science and Engineering, 2012, 29(3): 207-210.（in Chinese）
基金项目：国家教育部高等学校博士学科点专项科研基金资助项目(20100131120042); 旧桥检测与加固技术交通行业重点实验室（北京）开放课题资助项目(2010-1027)
作者简介：张峰（1978-)，男（汉族），江苏省泰州市人，山东大学副教授. E-mail: zhangfeng2008@sdu.edu.cn
引文：张峰，蔡建军，李树忱，等. 混凝土冻融损伤厚度的超声波检测［J］. 深圳大学学报理工版，2012，29（3）：207-210.
更新日期/Last Update: 2012-05-28