| 海水环境下钢筋混凝土人工鱼礁的耐久性寿命预测 |
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| 引用本文： | 陈海燕,陈丕茂,唐振朝,秦传新,余景.海水环境下钢筋混凝土人工鱼礁的耐久性寿命预测[J].中国海洋大学学报(自然科学版),2012(9):59-63. |
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| 作者姓名： | 陈海燕 陈丕茂 唐振朝 秦传新 余景 |
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| 作者单位： | 广东工业大学材料与能源学院;中国水产科学研究院南海水产研究所,农业部南海渔业资源环境科学观测实验站 |
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| 基金项目： | 公益性行业(农业)科研专项经费项目(201003068);农业部南海渔业资源环境科学观测实验站开放课题(FRES-201102)资助 |
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| 摘 要： | 根据人工模拟的流动海水环境(流速约为0.15m/s)下的混凝土侵蚀试验测得的混凝土中氯离子质量分数,分别测定了腐蚀350,380,400d后混凝土的氯离子扩散系数,并计算和预测了混凝土人工鱼礁的耐久性寿命。研究结果表明:氯离子在混凝土人工鱼礁中的扩散规律基本上遵循Fick第二定律;钢筋混凝土人工鱼礁的耐久性寿命与保护层厚度的平方成正比;海水盐度对混凝土人工鱼礁的耐久性寿命影响较大。
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| 关 键 词： | 混凝土礁体 氯离子扩散 临界氯离子浓度 耐久性寿命 |
Prediction of Service Life of the Reinforced Concrete Reefs in Seawater Surroundings’ |
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| Institution: | CHEN Hai-Yan1,CHEN Pi-Mao 2,Tang Zhen-Zhao2,Qin Chuan-Xin2,Yu Jin2(1.Faculty of Materials and Energy,Guangdong University of Technology,Guangzhou 510006,China;2.South China Sea Fisheries Research Institute,Chinese Academy of Fishery Sciences,South China Sea Fishery Resources and Environment Observation Station,Ministry of Agriculture,Guangzhou 510300,China) |
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| Abstract: | According to the concentrations of chloride ions in corrosion tests on concrete under artificial running seawater environment(flowing velocity is 0.15 m/s),the diffusion parameters of concrete after corrosion of 350,380,400d were studied.The service life of the reefs were calculated and predicted.The results show that the diffusion of chloride ion in the artificial reefs follows Fick’s second law.The service life of artificial reefs increases upon increasing the square of thickness of concrete protective layer.Salinity of the seawater has great influence on the service life of concrete reefs. |
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| Keywords: | concrete reef chloride diffusion chloride ion threshold concentration service life |
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