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混凝土结构因存在不同程度的裂缝，而导致结构物的承载能力和耐久性下降。在我国近５０亿ｍ２的房屋建筑中，约有１０亿ｍ２急需维修加固。鉴于此，我们参考国外的先进技术，研制了一种袖珍式灌浆注入工具———ＹＪ－自动压力灌浆器，同时，研制了与其配套的ＡＢ系列灌浆树脂
Due to the presence of different degrees of cracks in the concrete structure, the bearing capacity and durability of the structure are reduced. In China’s nearly 5 billion m2 housing construction, about 1 billion m2 is in urgent need of maintenance and reinforcement. In view of this, we have developed a portable grouting injection tool, YJ-Automatic Pressure Grouting, with reference to advanced technology from abroad. At the same time, we have developed AB-series grouting resin that is compatible with it.