| 矿渣混凝土硫酸盐腐蚀研究 |
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| 引用本文： | 金祖权,郭学武,侯保荣,李秋义,高嵩. 矿渣混凝土硫酸盐腐蚀研究[J]. 青岛理工大学学报, 2009, 30(4): 75-78,86 |
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| 作者姓名： | 金祖权 郭学武 侯保荣 李秋义 高嵩 |
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| 作者单位： | 中国科学院,海洋研究所,青岛,266071;青岛理工大学,土木工程学院,青岛,266033;宁波新力水泥制品有限公司,宁波,315040;中国科学院,海洋研究所,青岛,266071;青岛理工大学,土木工程学院,青岛,266033 |
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| 基金项目： | 铁道部科技研究开发计划，国家自然科学基金，山东省教育厅项目 |
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| 摘 要： | 研究了矿渣混凝土在5%Na2SO4溶液中浸烘循环,其相对动弹性模量、幅值及抗压强度演化规律.试验结果表明:混凝土相对动弹性模量先下降,后上升,再保持稳定,最后下降直至破坏;其幅值在前100次保持稳定,后下降直至破坏.混凝土抗硫酸盐腐蚀能力随矿渣掺量的增加而增加.相比于普通混凝土,随矿渣掺量增加,混凝土抗压强度损失率下降了28%～62%.混凝土在硫酸盐溶液中浸烘循环,其腐蚀产物为钙矾石和石膏.膨胀性腐蚀产物导致了混凝土浆集界面区和浆体区开裂,并最终导致混凝土破坏.
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| 关 键 词： | 混凝土 矿渣 硫酸盐 相对动弹性模量 微观 |
Damage of Concretes with GGBS Attacked by Sulfate Salt |
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| JIN Zu-quan,GUO Xue-wu,HOU Bao-rong,LI Qiu-yi,GAO Song. Damage of Concretes with GGBS Attacked by Sulfate Salt[J]. Journal of Qingdao Technological University, 2009, 30(4): 75-78,86 |
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| Authors: | JIN Zu-quan GUO Xue-wu HOU Bao-rong LI Qiu-yi GAO Song |
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| Affiliation: | 1.Institute of Oceanology;The Chinese Academy of Science;Qingdao 266071;China;2.SchooL of Civil Engineering;Qingdao Technological University;Qingdao 266033;3.Ningbo Xinli Cement Product Ltd;Ningbo 315040;China |
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| Abstract: | Evaluation of Erd(relatively dynamic modulus of elastically) ,ultrasound amplitude and compressive strength verse corrosion time of concretes were conducted. Four sets of concretes,the one was plain concrete,and others were concretes with GGBS in different addition. The corrsion solution was 5.0%Na2SO4(in mass) .The corrosion system was drying-immersion cycles. Experiments show that the value of Erd decreases firstly,then increases with corrosion time,after that the value of Erd keeps steady,finally it decl... |
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| Keywords: | concrete GGBS sulfate Erd microstructure |
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