施工工艺对UHPC性能的影响研究  

Study on Influence of Construction Process on UHPC Performance

作　　者：邓翀 胡锦轩 Deng Chong;Hu Jinxuan(CCCC WuHan Harbour Engineering Design and Research Co.,Ltd.,Wuhan Hubei 430040,China;Hubei Key Laboratory of Advanced Materials and Reinforcement Technology Research for Marine Structure,Wuhan Hubei 430040,China;CCCC SHEC Wuhan Harbour New Materials Co.,Ltd.,Wuhan Hubei 430040,China;School of Civil Engineering and Architecture,Wuhan Polytechnic University,Wuhan Hubei 430023,China)

机构地区：[1]中交武汉港湾工程设计研究院有限公司,湖北武汉430040 [2]海工结构新材料及维护加固技术湖北省重点实验室,湖北武汉430040 [3]中交二航武汉港湾新材料有限公司,湖北武汉430040 [4]武汉轻工大学土木工程与建筑学院,湖北武汉430023

出　　处：《港口航道与近海工程》2023年第5期100-104,共5页Port,Waterway and Offshore Engineering

摘　　要：超高性能混凝土(UHPC)具有超高的抗压、抗弯、抗折及耐疲劳性能,是水泥混凝土应用领域中的研究热点,目前对UHPC的研究主要集中于UHPC的配制技术、性能表征方面,对UHPC的施工工艺研究仍然较少。本文基于UHPC的施工工艺,从投料方式、搅拌机械、搅拌时长方面系统地研究搅拌工艺对UHPC的性能影响,通过运输时长和泵送方面评价UHPC的运输工艺的可实施性,研究施工工艺对UHPC性能的影响。结果表明UHPC施工工艺对UHPC的性能影响较大,施工过程中应严格控制搅拌时间及运输时长。Ultra-high performance concrete(UHPC)has ultra-high resistance against compression,bending,flexure and fatigue,which is a research hot spot in the application field of cement and concrete.By now,the research on UHPC mainly involves in the mixing technology and performance of UHPC,and the construction process of UHPC needs to be further studied.Based on the construction process of UHPC,the influence of mixing process on the performance of UHPC is fully studied from the aspects of feeding way,mixing equipment and mixing duration.The transportation time is combined with pumping effect to evaluate the feasibility of UHPC transportation process,and study the influence of construction process on UHPC performance.The results show that construction process has great influence on the performance of UHPC,that is,the above mixing and transportation time shall be strictly controlled.

关 键 词：超高性能混凝土 施工工艺 搅拌工艺 运输工艺 

分 类 号：TU37[建筑科学—结构工程]