硫酸盐侵蚀作用下混凝土细观破损机理研究

田威; 王震; 韩女

doi:10.13409/j.cnki.jdpme.2019.01.003

您当前的位置：

首页 >

文章列表页 >

硫酸盐侵蚀作用下混凝土细观破损机理研究

论文 | 更新时间：2025-12-11

- 硫酸盐侵蚀作用下混凝土细观破损机理研究
- Study of Meso-damage Mechanism of Concrete under Sulfate Attack
- 防灾减灾工程学报 2019年39卷第1期页码：16-22+60
- 作者机构：
- 作者简介：
- 基金信息：
  
  国家自然科学基金面上项目（51579013）;西安市建设科技计划项目（SJW2017-13）;长安大学研究生科研创新实践项目（201809）资助
- DOI：10.13409/j.cnki.jdpme.2019.01.003
  中图分类号： U528
- 纸质出版：2019
- 稿件说明：
移动端阅览
[1]田威,王震,韩女.硫酸盐侵蚀作用下混凝土细观破损机理研究[J].防灾减灾工程学报,2019,39(01):16-22+60.

田威, 王震, 韩女. Study of Meso-damage Mechanism of Concrete under Sulfate Attack[J]. 2019, 39(1): 16-22+60.
[1]田威,王震,韩女.硫酸盐侵蚀作用下混凝土细观破损机理研究[J].防灾减灾工程学报,2019,39(01):16-22+60. DOI： 10.13409/j.cnki.jdpme.2019.01.003.

田威, 王震, 韩女. Study of Meso-damage Mechanism of Concrete under Sulfate Attack[J]. 2019, 39(1): 16-22+60. DOI： 10.13409/j.cnki.jdpme.2019.01.003.

摘要

侵蚀环境下混凝土材料的内部孔隙空间分布特征与演化规律是材料破损机理及宏观力学性能研究的关键问题。采用X射线断层扫描技术（CT）对硫酸盐侵蚀与干湿循环耦合作用下混凝土的细观损伤过程进行实时扫描

在此基础上

结合图像处理与三维重构技术开展了混凝土内部孔隙结构的空间分布特征与演化规律研究

并通过提出的孔隙分区的方法深入研究了材料细观破损特征和机理。结果表明:宏观上试样质量、抗压强度均呈现规律性变化

溶液中钙镁离子浓度有明显的累积性趋势;细观上试样孔隙率随侵蚀时间的增加呈先减小后增大的变化

单轴抗压强度与孔隙率大体上呈负相关关系。同时

混凝土试样不同分区内孔隙率演化规律各不相同

但总体呈现先减小后增大的趋势

侵蚀作用深度随侵蚀时间不断增长。结论可为深入研究硫酸盐侵蚀下混凝土材料细观破损机理提供依据。

Abstract

The evolution and spatial distribution of internal random meso-porous structure are key problems in studying damage mechanism and macro-mechanical properties of concrete material under sulfate attack.X-ray tomography（CT）were used to scan the meso-damage process of concrete under sulfate attack.Based on this

combined with image processing and 3 Dreconstruction technology

the spatial distribution characteristics and evolution laws of pore in concrete was investigated using the proposed method of pore partitioning.The experimental results show that the concentration of Ca2+and Mg2+in the solution increased slowly.The compressive strength of concrete is closely related to its meso-pore structure under the coupling of sulfate attack and drying-wetting cycles.The evolution laws of pore in different regions of concrete specimen are different under the coupled effect of sulfate attack and drying-wetting cycles.Generally

the porosity increased after a slight decrease

and the corrosion depth increases with the corrosion time.There was a negative correlation between the uniaxial compressive strength and porosity.This study laid foundation for further research on meso-damage mechanism of concrete under sulfate attack.

关键词

Keywords

references

冻融环境下基于CT技术混凝土孔隙结构的三维分布特征 [J]. 田威,张鹏坤,谢永利,党发宁. 长安大学学报(自然科学版) . 2016(03)

干湿交替环境下混凝土受硫酸盐侵蚀劣化机理 [J]. 王海龙,董宜森,孙晓燕,金伟良. 浙江大学学报(工学版) . 2012(07)

干湿循环作用下混凝土硫酸盐侵蚀劣化机理试验研究 [J]. 高润东,赵顺波,李庆斌,陈记豪. 土木工程学报 . 2010(02)

硫酸钠和硫酸镁溶液中混凝土腐蚀破坏的机理 [J]. 梁咏宁,袁迎曙. 硅酸盐学报 . 2007(04)

混凝土在硫酸盐、氯盐溶液中的损伤过程 [J]. 金祖权,孙伟,张云升,蒋金洋. 硅酸盐学报 . 2006(05)

Study of deterioration of concrete exposed to different types of sulfate solutions under drying-wetting cycles [J] . Lei Jiang,Ditao Niu. Construction and Building Materials . 2016

Sulphate attack‐induced damage and micro‐mechanical properties of concrete characterized by nano‐indentation coupled with X‐ray computed tomography [J] . Chunxiang Qian,Yanfeng Nie,Tianji Cao. Structural Concrete . 2016 (1)

Sulfate Attack of Portland Cement Concrete Under Dynamic Flexural Loading: a Coupling Function [J] . Demei Yu,Bowen Guan,Rui He,Rui Xiong,Zhuangzhuang Liu. Construction and Building Materials . 2016

Investigating the failure process of concrete under the coupled actions between sulfate attack and drying-wetting cycles by using X-ray CT [J] . Jie Yuan,Yang Liu,Zhicheng Tan,Baokun Zhang. Construction and Building Materials . 2016

Experiment study on the failure mechanism of dry-mix shotcrete under the combined actions of sulfate attack and drying–wetting cycles [J] . Di-tao Niu,You-de Wang,Rui Ma,Jia-bin Wang,Shan-hua Xu. Construction and Building Materials . 2015

Effect of surface treatment on durability of concrete exposed to physical sulfate attack [J] . A.R. Suleiman,A.M. Soliman,M.L. Nehdi. Construction and Building Materials . 2014

Understanding the micro structure of Berea Sandstone by the simultaneous use of micro-computed tomography （micro-CT） and focused ion beam-scanning electron microscopy （FIB-SEM） [J] . Bijoyendra Bera,Sushanta K. Mitra,Douglas Vick. Micron . 2010 (5)

Effect of Simulated Acid Rain on Deterioration of Concrete [J] . Tsutomu Kanazu,Takuro Matsumura,Tatsuo Nishiuchi,Takeshi Yamamoto. Water, Air, and Soil Pollution . 2001 (1)

Deterioration of concrete structures by acid deposition — an assessment of the role of rainwater on deterioration by laboratory and field exposure experiments using mortar specimens [J] . Hiroshi Okochi,Hideki Kameda,Shin-ichi Hasegawa,Nobuhiko Saito,Ken Kubota,Manabu Igawa. Atmospheric Environment . 2000 (18)

浏览量

428

下载量

CSCD

文章被引用时，请邮件提醒。

提交

工具集

关联资源

硫酸盐与冻融环境下混凝土损伤破坏准则研究

干湿和冻融循环对压实黄土路用性能影响的试验研究

混凝土Ⅰ-Ⅱ复合型断裂过程声发射特征研究

受火混凝土温度场的试验与数值模拟研究

泥化夹层压缩试验的损伤特征及损伤方程研究