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这次专题讨论会于96年9月10日在北京市市政工程局会议室召开。共到会16位专家和数授.现场考察了西直门、三元和朝阳门三座混凝土损坏有代表性的立交桥,北京市市政工程研究院杨思忠工程师对三座立交桥混凝土损坏的调查、试验及分析作了报告,经专家讨论,依据混凝土破坏的特征,对破坏原因提出如下看法,即:冻融引起的破坏;化学腐蚀引
The symposium was held on September 10, 1996 in the conference room of Beijing Municipal Engineering Bureau. A total of 16 experts and counties attended the symposium and investigated the concrete damage caused by three concrete bridges in Xizhimen, San Yuan and Chaoyangmen on the spot, as well as the investigation, test and analysis of concrete damage to the three overpasses by Yang Sizhong Engineer of Beijing Municipal Engineering Research Institute Made a report, discussed by the experts, based on the characteristics of concrete damage, the reasons for the destruction of the following views, namely: freeze-thaw caused by damage; cited chemical corrosion