登录
注册
E-alert
登录
注册
E-alert
STUDY ON CHLORIDE IONS EROSION AND RANDOMNESS FOR EXISTING CONCRETE IN NATURAL ENVIRONMENT
-
摘要: 对钱塘江河口地区感潮环境下的既有混凝土芯样中的氯离子浓度进行测定,分析侵蚀深度与氯离子浓度的关系。根据既有混凝土样本,测定既有混凝土的孔隙率,并分析氯离子扩散控制起点与孔隙率之间的关系。另外,同一深度的氯离子浓度具有较大的随机性,而且较好地符合对数正态分布。Abstract: The chloride ions'concentrations in ex isting concrete in tidal estuary environment of the Qiantang River are measured, the relation between erosion depths and concentrations of chloride ions in concrete is analyzed. Based on the samples, the porosities of existing concrete are measured, and the relations between control starting points and porosities is also studied. In addition, there is stronger randomness in distribution of chloride ions'concentration at the different depths of existing concrete.
-
Key words:
- existing concrete /
- chloride ions /
- porosity /
- randomness
-
.洪乃丰. 混凝土中钢筋腐蚀和防护技术(3)氯盐与钢筋锈蚀破坏[J]. 工业建筑, 1999, 29(10): 60-63. [2] .Costa A, Appleton J. Chloride Penetration into Concrete in Marine Environment??Part I: Main Parameters Affect ing Chloride Penetration[J]. Materials and Structures, 1999, 32: 252-259. [3] .金伟良, 赵羽习. 混凝土结构耐久性[M]. 北京: 科学出版社, 2002. [4] .余红发, 孙伟, 麻海燕, 等. 混凝土在多重因素作用下的氯离子扩散方程[J]. 建筑材料学报, 2002, 5(3): 240-247. [5] .Liang Ming??Te, Lin Li??Hsien, Liang Chih??Hsin. Service Life Prediction of Existing Reinforced Concrete Bridges Exposed to Chloride Environment [J]. ASCE, Journal of Infrastructure Systems, 2002, 8(3): 76-85. [6] .吴瑾, 吴胜兴. 海洋环境下混凝土中钢筋表面氯离子浓度的随机模型[J]. 河海大学学报(自然科学版), 2004, 32(1): 38-41. [7] .Zhang Jun??Zhi, Zheng Hui, Zhou Jian??Min, et al . Study on Two??Way Erosion Law of Chloride Ions in Concret e of Exist ing RC Gates Under Strong Tidal Environment [C]//Proceedings of The 4th Int'l Conf. on Advance in Strnctural Engineering and Mechanics (ASEM'08). Jeju, Korea: 2008, 8. [8] .张俊芝. 服役工程结构可靠性理论及其应用[M]. 北京: 中国水利水电出版社, 2007. -
点击查看大图
计量
- 文章访问数: 66
- HTML全文浏览量: 7
- PDF下载量: 89
- 被引次数: 0
下载:
