南水北调工程穿黄隧洞CW620聚脲混凝土表面防护材料应用研究  

Application and research on polyurea surface protection material CW620 for concrete in Chuanhuang tunnel of south-north water diversion project

作　　者：甘国权[1,2,3] 韩炜[1,2,3] 景锋[1,2,3] 邵晓妹[1,2,3] 李珍[1,2,3] 汪在芹[1,2,3] 

机构地区：[1]长江科学院长江工程技术公司,武汉430010 [2]水利部水工程安全与病害防治工程技术研究中心,武汉430010 [3]国家大坝安全工程技术研究中心,武汉430010

出　　处：《化工新型材料》2017年第1期223-225,共3页New Chemical Materials

基　　金：长江科学院技术开发和成果转化推广项目(CKZS2014015/CF)

摘　　要：南水北调中线工程穿黄隧洞锚具槽部位新浇混凝土与原混凝土之间形成环状施工缝,因新旧混凝土性能差异,导致部分施工缝表面呈片状、点状渗水,为加强止水防渗效果,施工缝经化学灌浆处理后,需再进行聚脲材料表面涂覆封闭处理。由于穿黄隧洞内具有低温、潮湿的环境特点,为保证施工质量,选取CW620聚脲混凝土表面防护材料进行应用实验研究。In the south-north water diversion middle project,the groove of anchorage device in Chuanhuang tunnel formed a circular construction joint between new and old concrete.Due to the new and old concrete＇s different performances,some construction joints appeared patchy and point like seepage.To enhance the waterproof capability,the construction joints should be surface coated by polyurea materials,after chemical grouting treatment.Because of the moist and chilled conditions in Chuanhuang tunnel,the polyurea surface protection materials CW620 for concrete was used to ensure the constrction quality.

关 键 词：穿黄隧洞 锚具槽 聚脲 低温潮湿环境 

分 类 号：TV554[水利工程—水利水电工程] TV44