我国铁路高强混凝土五十年回顾与展望  

REVIEW OF HIGH STRENGTH CONCRETE OF CHINESE RAILWAY FOR 50 YEARS AND PROSPECTS

作　　者：石人俊[1] 钟美秦[1] 

机构地区：[1]铁道科学研究院,北京100081

出　　处：《铁道工程学报》2005年第5期75-78,共4页Journal of Railway Engineering Society

摘　　要：本文介绍了我国铁路高强混凝土(HSC)50年的发展,可归纳为3个阶段。第一阶段:采用普通HSC和掺塑化剂(减水剂)HSC,并配合台振、侧模振、底模振振实工艺配制得到C40-C55干硬性和低塑性HSC。批量生产应用于预应力混凝土(PC)轨枕、管桩、接触网支柱、桥梁等。第二阶段:以开发应用基萘磺酸盐系(NSF)高效减水剂配制塑性HSC为代表,结合铁路运输高速、重载、动载、安全的特点,对掺NSF-HSC的物理力学和结构性能进行了系统的研究试验。NSF-HSC在全路得到大面积的推广应用。第三阶段:研究开发应用氨基磺酸盐系 (ASF)、高效减水剂和聚羧酸盐系(PCE)高性能减水剂。本文确认PCE高性能减水剂能较好的满足铁路工程的特点,是当前铁路高强、高性能混凝土优选的主剂,建议加速研究并推广应用。This paper gives an introduction to the development of high strength concrete of Chinese railway for 50 years.The development experience can be divided into three stages.In the first stage,C40-55 dry and low plastic high strength concrete was made from common HSC and plastics doped compound agent （dehumidifying agent） HSC by adopting the techniques of bench vibration,side form vibration and bottom die vibration,for massive production of pre-stressed concrete tie,tube pile,post of catenary and bridge.In the second stage,the plastic HSC was made with NSF high efficient dehumidifying agent.The systematic experiments were done for physical mechanics and structure performance of NSF-HSC according to the features of railway traffic,such as high speed,heavy haul,dynamic loading and safety.In the third stage,the ASF high efficient and PCE high efficient dehumidifying agents were produced and applied.This paper concludes that the PCE high efficient dehumidifying agent call meet the requirements of railway engineering and is an ideal agent for high strength and high performance concrete for railway.

关 键 词：高效减水剂 高性能减水剂 高性能AE减水剂 高强混凝土 高性能混凝土 

分 类 号：U214.18[交通运输工程—道路与铁道工程]