1 郑州大学水利科学与工程学院,郑州 450001 2 兰州理工大学土木工程学院,兰州 730050 3 International Center for Numerical Methods in Engineering, CIMNE, Spain 4 中国人民解放军军事科学院国防工程研究院工程防护研究所,洛阳471023
Study on the Correlation Between Chloride Ion Transportation and pH Distribution in Unsaturated Mortar
YANG Lin1, ZHANG Yunsheng2, ANDRADE Carmen3, ZHANG Chunxiao4
1 School of Conservancy Engineering, Zhengzhou University, Zhengzhou 450001, China 2 School of Civil Engineering, Lanzhou University of Technology, Lanzhou 730050, China 3 International Center for Numerical Methods in Engineering, CIMNE, Spain 4 Institute of Engineering Protection, Institute of Defense Engineering, Academy of Military Science of PLA, Luoyang 471023, China
Abstract: Chloride ion transportation and pH distribution of unsaturated mortar suffered from continuous immersion in chloride solution and drying-wetting cycles were investigated, and the influence of carbonation on chloride transportation was considered. What's more, the correlation between chloride transportation and pH distribution was analyzed systematically. The results show that the chloride transportation and pH distribution do not show a direct correlation when the dried mortars were suffered from continuous immersing in NaCl solution for different time. However, under the drying-wetting cycles, the chloride transportation of unsaturated mortar is closely related to pH distribution. The decrease of chloride content near the surface of mortar is consistent with the decrease of pH. For the unsaturated pre-carbonated mortar suffered from drying-wetting cycles, the chloride content distribution and pH distribution show the same characteristics, similar to “S” shape. The carbonation of unsaturated mortar changes the pH distribution and further affects the behavior of chloride transportation.
杨林, 张云升, Carmen Andrade, 张春晓. 非饱和砂浆氯离子传输与pH分布相关性研究[J]. 材料导报, 2021, 35(18): 18064-18068.
YANG Lin, ZHANG Yunsheng, ANDRADE Carmen, ZHANG Chunxiao. Study on the Correlation Between Chloride Ion Transportation and pH Distribution in Unsaturated Mortar. Materials Reports, 2021, 35(18): 18064-18068.
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2021, Vol. 35 
