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U型砼膨胀剂(UEA)是一种抗裂防渗砼外加剂,自1988年通过部级技术鉴定以来,在全由销售40万余吨,在北京地区应用近10万吨.UEA在亚运工程,北京西客站、北京地铁、水源九厂、蓝岛大厦、赛特购物中心、北京当代商城等重大防水工程,以及许多高层商业和住宅楼的地下室应用效果甚佳.得到首都设计、施工界的好评.建设部和北京市建工局把UEA列为重点推广项目.1992年建设部把“UEA补偿收缩砼防水工法”列为国家级工法(YJGF22-92).这是我国结构自防水技术的重大突破.近年来,我院与北京市建筑设计院合作,用UEA膨胀加强带取代后浇带,可连续浇注150m钢筋砼而不留缝,这种无缝设计施工新技术在北京西客站、当代商城、精品大厦等20多个超长建筑应用十分成功.这一新技术已在国内推广.再者,随着我国高层建筑的发展,底板砼越来越厚,有的达到2～3m,UEA作为大体积结构砼控制温差裂缝的技术措施,也已得到广泛应用.
U-Type Europium Expansive Agent (UEA) is a cracking and impervious anti-seepage additive. Since it passed the ministerial-level technical appraisal in 1988, it has sold more than 400,000 tons and applied nearly 100,000 tons in Beijing. UEA is in Asian Games. Engineering, Beijing West Railway Station, Beijing Subway, Shuiyuan Jiuchang, Blue Island Building, Saite Shopping Center, Beijing Contemporary Mall and other major waterproofing projects, as well as many high-rise commercial and residential buildings in the basement application effect is very good. Get the capital design and construction industry The Ministry of Construction and the Beijing Municipal Bureau of Construction and Industry listed UEA as a key promotion project. In 1992, the Ministry of Construction listed the “UEA Compensation Contraction and Waterproofing Method” as a national construction method (YJGF22-92). This is a structural self-waterproof technology in China. A major breakthrough. In recent years, our institute has cooperated with the Beijing Architectural Design Institute, using the UEA expansion belt to replace the post-pouring belt, and can continuously cast 150m reinforced concrete without seams. This seamless design and construction technology is at the Beijing West Railway Station. The application of more than 20 ultra-long buildings, such as contemporary malls and boutique buildings, has been very successful. This new technology has been promoted in China. Furthermore, with the development of high-rise buildings in China, the floor slabs have become thicker and thicker, and some have reached 2 to 3 meters. , UEA as a bulk structure Technical measures temperature cracks of the system, has been widely used.