高石粉机制砂高性能混凝土的制备与工程应用  

Preparation and engineering application of high performance concrete with high stone powder manufactured sand

作　　者：余尚和 周孝军 梁远博[3] 李胜[4] 赵艺程 YU Shanghe;ZHOU Xiaojun;LIANG Yuanbo;L;ZHAO Yicheng(Sichuan Highway Bridge Construction Group Co.Ltd.,Cheugdu 610041,China;School of Civil Engineering,Architecture and Environment,Xihua University,Chengdu 610039,China;State Key Laboratory of Silicate Materials for Architectures,Wuhan University of Technology,Wuhan 430070,China;Sichuan Vocational and Technical College of Communications,Chengdu 611130,China)

机构地区：[1]四川公路桥梁建设集团有限公司,四川成都610041 [2]西华大学土木建筑与环境学院,四川成都610039 [3]武汉理工大学硅酸盐建筑材料国家重点实验室,湖北武汉430070 [4]四川交通职业技术学院,四川成都611130

出　　处：《新型建筑材料》2018年第10期12-14,76,共4页New Building Materials

基　　金：四川省交通科技项目(2016Z1-4)

摘　　要：探讨了降粘剂种类和引气剂掺量对高石粉机制砂混凝土拌合物流动性、粘聚性,以及硬化混凝土抗压强度、表观质量的影响。结果表明:采用910型降粘母液且引气剂掺量为0.03%时,混凝土的工作性能、强度及外观效果较好。通过配合比优化设计,掺专用外加剂,制备出工作性能、力学性能与耐久性能满足设计与施工要求的机制砂高性能混凝土,在叙古高速公路桥梁工程的墩柱、预制梁与现浇梁中广泛应用,取得了良好工程效果。The effects of viscosity-reducing agent and air-entraining agent on fluidity and cohesiveness of concrete mix,and compressive strength,apparent quality of hardened concrete were discussed. The results show that,when the 910 type viscosity-re- ducing agent was used in water reducer, and air-entraining agent reached 0.03%,the specimens have good working performance, high strength and excellent appearance effect. Through mixing ratio optimization design, and adding special admixtures,manufactured sand high performance concrete with outstanding work performance, mechanical properties and durability were prepared,which fully meet the design and construction requirements. They have been widely used in bridge piers,prefabricated beams and cast-in-situ beams on Xuyong to Gulin highway,and achieved good engineering results.

关 键 词：高石粉机制砂 混凝土 工作性能 力学性能 耐久性能 外加剂 

分 类 号：TU528[建筑科学—建筑技术科学]