粉煤灰综合利用 FLY ASH COMPREHENSIVE UTILIZATION 2010No.3 试验 北方微冻地区海工高性能混凝土耐久性研究 Research on Durability of Marine High Peformance Concrete in Northern Light Freezing Area 王立钢,施惠生2,罗德龙3,王迎飞 (1.中交四航工程研究院有限公司,广州510230;2.同济大学先进土木工程材料 教育部重点实验室,上海2000923.山东高速集团有限公司,青岛266061) 商要:研究了北方微冻地区某跨海大桥所采用的高性能混凝土体系的耐久性能,采用电量法及RCM法对高抗氯 盐侵蚀混凝土进行了评价;采用了快速冻融法及硬化混凝土气泡间距系数综合评价抗冻融破坏的高性能混凝土。根据 研究结论可知,大掺量矿物掺合料及适量的引气剂是改善北方微冻地区海工混凝土耐久性的有效措施。 关键词:电通量:RCM;快冻法;气泡间距系数;引气剂 文章编号:1005-8249(2010)03-0009-04 ( 1.Engineering Technology Research Co .LTD .of CCCC Fourth Harbor Engineering Co .LTD Guangzhou ,510230 :2 .Key Laboratory of Advanced Civil Engineering Materials of Ministry of Education Tongji University ,Shanghai 200092 ;3 .Shandong Hi-speed Group Co .LTD ,Qingdao 266061 ) Abstract :In this paper ,the chloride erosion resistance of high peformance concrete of a bridge in light freezing area is researched by ASTM C1202 and RCM and the freeze-thaw durability is researched by rapid freezing-thawing and air void spacing factor .By these researches it is concluded that the large volume mineral admixtures and appropriate air-entraining agent can largely improve the durability of marine conerete in northem light freez...
北方微冻地区海工高性能混凝土耐久性研究.pdf
