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投稿时间：2008-03-29 修订日期：2008-06-16
投稿时间：2008-03-29 修订日期：2008-06-16
中文摘要: 摘要：为了配制抗盐冻的道路混凝土，自行配制内掺型抗盐冻外加剂（简称ASN），并参照CDF混凝土抗盐冻试验方法，研究掺入该外加剂混凝土的抗盐冻性能。结果表明：掺入ASN型抗盐冻外加剂后，普通混凝土剥蚀量降低了56%，相对动弹性模量损失率降低了68%；高性能混凝土剥蚀量降低了75%，相对动弹性模量损失率降低了42%。混凝土表面无明显剥蚀痕迹，经SEM观察，混凝土微观结构比较密实，没有明显的微裂缝出现。ASN型抗盐冻外加剂提高了道路混凝土的抗盐冻性能。
Abstract:Abstract: In order to prepare the pavement concrete with freeze-deicing salt resistance, the freeze-deicing salt resistant agent (ASN) was researched and developed. According to the CDF test method, the freeze-deicing salt resistance of the pavement concrete with ASN agent was studied. The results showed that the scaled mass of ordinary performance concrete decreased by 56%, the dynamic modulus of elasticity loss rate decreased by 68% and the scaled mass of high performance concrete decreased by 75%, the dynamic modulus of elasticity loss rate decreased by 42% after 56 cycles due to the freeze-deicing salt resistant agent added into the concrete. Scaling mark on the concrete surface was hardly detected. SEM demonstrated that microstructure of concrete was dense and micro-cracks did not occur. So the ASN agent can greatly improve the pavement concrete in freeze-deicing salt resistance.
文章编号：200800070 中图分类号： 文献标志码：
基金项目:国家自然科学基金
| 作者 | 单位 | |
| 李中华* | 哈尔滨工业大学土木工程学院 | lizhonghua77@126.com |
| 巴恒静 | 哈尔滨工业大学土木工程学院 |
作者简介:
引用文本：
李中华,巴恒静.道路混凝土抗盐冻性能的研究[J].工程科学与技术,2008,40(5):79-83.
Li Zhong-Hua,Ba Heng-Jing.Study on the freeze-deicing salt resistance of the pavement concrete[J].Advanced Engineering Sciences,2008,40(5):79-83.
引用文本：
李中华,巴恒静.道路混凝土抗盐冻性能的研究[J].工程科学与技术,2008,40(5):79-83.
Li Zhong-Hua,Ba Heng-Jing.Study on the freeze-deicing salt resistance of the pavement concrete[J].Advanced Engineering Sciences,2008,40(5):79-83.