用弹性聚氨酯材料处理混凝土裂缝伸缩缝的试验小结

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化学灌浆材料在我国水电、建筑等部门应用已有十多年了,近年来又有了新的发展,品种日益增多,施工技术和设备日趋完善,用途也不断扩大,特别在水利建筑等方面,取得了可喜成绩。但目前所用化学灌浆固结材料,如水泥、水玻璃、环氧、甲凝等强度虽较高,但弹性较差,往往不能适应混凝土热胀冷缩的要求。新丰江水电厂于60年蓄水发电后,63年发生了强烈地震,震后在大坝和厂房都发现 Chemical grouting materials have been used for more than 10 years in China’s hydropower, construction and other sectors. In recent years, there have been new developments. The number of varieties has been increasing. The construction technology and equipment have been increasingly perfected, and their use has also been expanding, especially in water conservancy construction, etc. Has made gratifying results. However, the chemical grouting and consolidation materials currently used, such as cement, water glass, epoxy, and agglutinate, have high strength, but their elasticity is poor, and they are often unable to meet the requirements of thermal expansion and contraction of concrete. After Xinfengjiang Hydropower Plant built water for power generation in 60 years, a strong earthquake occurred in 63 years. After the earthquake, it was found in dams and factories.
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