超早强混凝土耐久性能研究  

Research on the Durability of Ultra-high-early Strength Concrete

作　　者：查进[1,2] 李顺凯[1,2] 李进辉[1,2] 刘松[1,2] 屠柳青[1,2] 张国志[1,2] 

机构地区：[1]中交武汉港湾工程设计研究院有限公司,武汉430071 [2]长大桥梁建设施工技术交通行业重点实验室,武汉430071

出　　处：《武汉理工大学学报》2010年第7期48-50,共3页Journal of Wuhan University of Technology

基　　金：中国交通建设集团科技研发A类项目(2006-ZJKJ-04)

摘　　要：利用快硬硫铝酸盐水泥、碱金属碳酸盐早强剂、无机三元酸缓凝剂和聚羧酸高效减水剂配制了C50超早强混凝土,其12 h抗压强度大于37 MPa,3 d抗压强度大于59 MPa。对比C50普通混凝土,研究超早强混凝土的耐久性能,研究结果表明,超早强混凝土的抗氯离子渗透性能、抗碳化性能和耐磨性能与普通混凝土相当,而其抗硫酸盐侵蚀性能大大优于普通混凝土。In this paper,the C50 ultra-high-early-strength concrete is prepared with rapid-harden sulphoaluminate cement,alkali carbonate early strength agent, inorganic tribasic acid retarder and polycarboxylate water reducing agent.The compressive strength at 12 h exceeds 37 MPa and at 3 days exceeds 59 MPa.Compared to the C50 ordinary reference concrete,the durability of the ultra-high-early strength concrete is investigated.The results indicate that the C50 ultra-highearly-strength concrete has the same chloride ion permeability resistance,carbonization resistance and abrasion resistance to the C50 ordinary concrete.As to the sulfate resistance,the ultra-high-early-strength concrete is much better than the ordinary concrete.

关 键 词：超早强混凝土 硫铝酸盐水泥 碱金属碳酸盐早强剂 无机三元酸缓凝剂 耐久性 

分 类 号：U445[建筑科学—桥梁与隧道工程]