新旧混凝土结合面成为受力薄弱环节的原因及加强措施初探

The Reason of the Bond Face Being the Weakness of the Stressing Concrete of the Existing and Green Concrete, and Exploration of the Strengthening Measures

本文从微观结构角度分析了整浇混凝土中骨料与水泥石界面结构成为薄弱环节的原因 ,并以此为基础 ,进一步探讨了新旧混凝土结合面成为受力薄弱环节的原因 .我们认为 ,对于新旧混凝土粘结问题的根本解决 ,需要从混凝土材料微观结构的角度阐明其粘结机理 ,建立微观结构的分析和宏观力学性能之间的联系 ,才是解决这一问题的根本途径 .

The thesis analysed microscopocally the reason of the interface structure being the weakness of the aggregates and celite in the concrete poured monolithically, and then further explored the reason of the bond face being the weakness of the existing and green concrete on the basis of the above. In our opinions the fundamental approach that solves the cohesion of the existing and green concrete completely is to make clear the bonding mechanism on the basis of the micro\|structure of the concrete mix, then to associate the analysis of the micro structure with the macroscopic mechanical perfo mance. In the end, the measures used to strengthen the bond of the existing and green concrete is proposed.