| 摘要: |
研究了“灯芯效应”下珊瑚骨料混凝土在Mg2+、SO42-![]() ![]() 共同作用下Cl-![]() ![]() 的传输规律，建立了“灯芯效应”下珊瑚骨料混凝土Cl-![]() ![]() 传输模型. 结果表明：Cl-![]() ![]() 沿半浸泡混凝土高度方向由下而上传输的同时也由表层向中心传输，其在混凝土内部的含量呈类抛物面分布；SO42-![]() ![]() 的存在会加快Cl-![]() ![]() 在混凝土中的传输，而Mg2+的加入会抑制Cl-![]() ![]() 的传输，导致混凝土在相同高度及深度处的Cl-![]() ![]() 含量小于SO42-![]() ![]() 与Cl-![]() ![]() 共同作用下的Cl-![]() ![]() 含量；本文建立的“灯芯效应”下珊瑚骨料混凝土氯离子传输模型计算结果与实测结果吻合良好. |
| 关键词: 珊瑚骨料混凝土 半浸泡 灯芯效应 氯离子传输 离子共同作用 |
| DOI：10.3969/j.issn.1007-9629.2023.11.005 |
| 分类号:TU528.01 |
| 基金项目:国家自然科学基金资助项目（52278217）；陕西省教育厅青年创新团队建设科研计划项目（21JP059） |
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| Chloride Transportation in Coral Aggregate Concrete Due to “Wick Action” |
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LUO Daming1,2, ZHOU Meng1,2, LI Fan1,2, NIU Ditao1,2
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1.School of Civil Engineering， Xi’an University of Architecture and Technology， Xi’an 710055， China;2.State Key Laboratory of Green Building， Xi’an University of Architecture and Technology， Xi’an 710055， China
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| Abstract: |
The Cl-![]() ![]() transport law of coral aggregate concrete under the synergism of Mg2+ and SO42-![]() ![]() erosion was studied， and the Cl-![]() ![]() transportation model for coral aggregate concrete under the “wick action” was established. The results show that Cl-![]() ![]() is transported both from the bottom to the up and from the surface layer to the center longitudinal of the semi-immersed concrete， and the Cl-![]() ![]() in concrete exhibits a parabolic distribution. SO42-![]() ![]() will accelerate the transfer of Cl-![]() ![]() in concrete， while the addition of Mg2+will inhibit the transfer of Cl-![]() ![]() ， resulting in the concentration of Cl-![]() ![]() at the same height and depth in concrete be smaller than that under the combined action of SO42-![]() ![]() and Cl-![]() ![]() . The calculated results of the chloride ion transport model for coral aggregate concrete under the “wick action” established in this paper are in good agreement with the measured results. |
| Key words: coral aggregate concrete semi-immersion wick action chloride transportation ion interaction |
