项目名称: 干湿循环环境水工混凝土氯离子侵蚀的模拟试验相似性研究
项目编号: No.51279181
项目类型: 面上项目
立项/批准年度: 2013
项目学科: 水利工程
项目作者: 张俊芝
作者单位: 浙江工业大学
项目金额: 82万元
中文摘要: 基于典型含氯环境多因素作用下既有水工混凝土实测样本测试的氯离子侵蚀参数、现场试验与室内模拟试验的结果,分析含氯环境主要影响因素作用下的模拟试验在氯离子侵入特征和侵蚀主要参数及钢筋初始锈蚀时间等方面的相似性,为类似环境的模拟试验参数设计、水工混凝土结构耐久性设计、既有水工混凝土耐久性寿命评价提供依据。 (1)研究典型自然氯盐环境下水工混凝土氯离子侵蚀的特性及分布规律,积累水工混凝土结构耐久性研究资料;(2)设计并实现含氯环境主要因素的水工混凝土及构件的模拟试验,掌握不同环境下的模拟试验技术及耐久性参数和随机特性;(3)通过原位检测和模拟试验及现场试验等分析,提出不同试验环境下,典型含氯环境水工混凝土氯离子侵蚀特性及耐久性主要参数的相似准则、不同环境加速试验参数的修正方法;(4)验证含氯环境下水工混凝土构件耐久性随机寿命的试验相似性,提出水工混凝土构件模拟试验的耐久性随机寿命的修正参数或方法。
中文关键词: 干湿循环;水工混凝土;氯离子侵蚀;模拟试验;相似性
英文摘要: Based on the chloride ion ingression parameters of the existing hydraulic concrete test samples under typical chloride environments considering multi-factors, and the test conclusion of the field experiments and the laboratory simulation tests, the similarity of the chloride ion ingression characteristics and the main ingression parameters besides the initial corrosion time of reinforcing bar in the in simulation tests under the chloride environment considering main influencing factors will be analyzed. The study results will lay a foundation for parameters design of the simulation test in similar environment, durability design of hydraulic concrete structure and endurance life evaluation of the existing hydraulic concrete. (1) For the purpose of accumulating the durability research materials about hydraulic concrete structures, the chloride ion ingression characteristics and distribution laws of the hydraulic concrete under the natural chloride environment will be studied. (2) To master the simulation test techniques, the durability parameters and the stochastic characteristics, simulation tests of the hydraulic concrete and components considering the main influencing factors in chloride environment will be designed and implemented. (3) According to the analysis on the in situ test and simulation tests and fiel
英文关键词: Wetting-drying cycles;Hydraulic concrete;Chloride ion erosion;Simulation test;Similarity