Preparation and Application of Self-compacting Concrete-filled Steel Tube Using Polymer Admiztures

摘要：

Self-compacting concrete-filled steel tube is different from ordinary self-compacting concrete in many aspects. According to the demands of on-site construction conditions and construction technology of continuous pumping lift-up method for the project of Huaxi No.1 steel tube arch bridge, property requirements of self-compacting concrete filled steel tube were proposed in this paper. By using the preparation techniques such as optimization of basic parameters of concrete mix proportion, admixture composition and mineral admixture addition, self-compacting concrete filled steel tube was prepared with the properties such as initial slump more than 24cm, initial slump flow above 650mm, T50 between 5s and 15s, no slump loss for 4h, no bleeding, strength grade above C60 and shrinkage-compensation etc. It was applied in the steel tube arch bridge project successfully using the construction technology of pumping lift-up method.

关键词： steel tube self-compacting concrete slump retentivity preparation pumping lift-up

作者: Zhengwu Jiang Xiangtao Li Zhenping Sun Peiming Wang

作者单位: Key Laboratory of Advanced Civil Engineering Materials (Tongji University), Ministry of Education, Shanghai 200092, China

会议类型: 国际会议

会议名称: 6th Asian Symposium on Polymers in Concrete(第六届亚洲聚合物混凝土国际会议)

会议地点: 上海

会议语种:英文

页码: 546-551

在线出版日期: 2009-10-29（万方平台首次上网日期，不代表论文的发表时间）