文档介绍：第 42 卷第 5 期 2011 年 5 月建筑技术
May. 2011 Architecture Technology ·443·
自密实混凝土抗冻性能研究
陈春珍2,3, 张金喜1, 徐金良2, 王小兵2
(1. 北京工业大学道路与铁道工程学科,100124,北京; 2. 厦门中平公路勘察设计院有限公司,361008,福建厦门;
3. 厦门中平工程监理咨询有限公司,361008,福建厦门)
摘要: 通过宏观和微观两方面研究C60自密实混凝土抗冻性。宏观研究表明C60自密实混凝土不能经受
300次快速冻融循环,需掺入引气剂以保证其抗冻耐久性,自密实混凝土抗冻性能与高强混凝土类似,冻融破坏
的主要因素是在冻融过程中温度变化而产生的疲劳应力所造成。微观研究表明C60自密实混凝土的相对耐久性
指数与混凝土含气量、气泡间隔系数及微观孔径分布存在一定关系。
关键词:自密实混凝土;抗冻性;宏观研究;微观研究
中图分类号:TU 755 文献标识码:A 文章编号:1000-4726(2011)05-0443-03
STUDY ON FROST-RESISTANCE OF PACTING CONCRETE
CHEN Chun-, ZHANG Jin-xi1, XU Jin-liang2, WANG Xiao-bing2
(1. Road and Railway Engineering, Beijing University of Technology, 100124, Beijing, China;
2. Xiamen Zhongping Highway Survey and Design Co., Ltd., 361008, Xiamen, Fujian, China;
3. Xiamen Zhongping Engineering Supervision Consulting Co., Ltd., 361008,Xiamen,Fujian, China)
Abstract: Frost-resistance of pacting concrete of C60 has been studied from both of macro and
micro respects. The macro-study results indicate that the frost-resistance of pacting concrete of C60
does not reach 300 cycles of freezing and thawing, it can be mixed with air entraining agent to ensure its
frost-resistance. Frost-resistance of pacting concrete is similar to high strength concrete with freeze-
thaw damage, which a major factor is the fatigue stress on temperature changes during freezing