| 含气量对混凝土耐久性的影响 |
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| 引用本文： | 龚成志,黄维蓉,周建廷.含气量对混凝土耐久性的影响[J].公路交通技术,2011(2):1-3,11. |
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| 作者姓名： | 龚成志 黄维蓉 周建廷 |
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| 作者单位： | 1. 重庆市公路工程(集团)股份有限公司,重庆,400038
2. 重庆交通大学土木建筑学院,重庆,400074 |
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| 基金项目： | 西藏交通厅科技攻关项目 |
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| 摘 要： | 适宜含气量不但有利于提高混凝土的抗冻性能,而且还有利于提高混凝土的抗氯离子渗透性能,对二者的影响规律也相似.混凝土抗冻性试验和氯离子渗透试验结果表明:随着混凝土中含气量的不断增加,混凝土抗冻性能与抗氯离子渗透性能先增加后减小.建议C30、C40混凝土含气量控制在3.5%～5%,C50混凝土含气量控制在5%～7%.
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| 关 键 词： | 混凝土 含气量 抗冻性能 抗氯离子渗透性能 |
Influences of Air Content on Durability of Concrete |
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| GONG Chengzhi,HUANG Weirong,ZHOU Jianting.Influences of Air Content on Durability of Concrete[J].Technology of Highway and Transport,2011(2):1-3,11. |
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| Authors: | GONG Chengzhi HUANG Weirong ZHOU Jianting |
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| Abstract: | Appropriate air content is beneficial not only to improve freezing resistance of concrete,but also to enhance penetration resistance of chloride ions,and has similar influencing rules for both.The results of freezing resistance test and chloride ions penetration test for concrete show that the freezing resistance and penetration resistance of chloride ions of concrete decrease first and then decrease with escalation of air content in concrete.This paper recommends that the air content in C30 and C40 concretes is controlled within 3.5%~5% and in C50 concrete within 5%~7%. |
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| Keywords: | concrete air content freezing resistance penetration resistance of chloride ions |
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