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1976年7月28日唐山、丰南地区发生强烈地震,波及北京,使首都一些建筑物受到不同程度的损坏。我们对震后产生了裂缝但还有一定支承能力的砖墙裂缝进行了加固试验研究。我们采用的是比较经济、早期强度较高的水玻璃磨细矿渣砂浆为修补剂,以一般工地都能具备的手电钻和小型空气压缩机为主要修补设备。在工艺上既简易又便于操作,提出了销键及原缝灌浆两种工艺。
On July 28, 1976, a strong earthquake took place in Tangshan and Fengnan, affecting Beijing, causing damage to some buildings in the capital. We conducted reinforcement experiments on cracks in brick walls that had cracks after the earthquake but had some supportive capabilities. We use water glass ground slag mortar, which is more economical and has higher early strength, as a repair agent, and hand drills and small air compressors that are generally available on the construction site are the main repair equipment. In terms of process, it is both simple and easy to operate, and it proposes two processes of pin key and original joint grouting.