新老混凝土结合面黏结强度影响因素研究综述

发布时间：2018-03-08 16:33

  本文选题：新老混凝土　切入点：结合面　出处：《混凝土》2017年10期 　论文类型：期刊论文

【摘要】：新老混凝土结合面的黏结性能直接决定修补后的新老混凝土的黏结强度。新老混凝土结合面的黏结强度由很多因素决定。从新老混凝土界面的粗糙程度、采用的修补材料与界面剂的选择以及界面植筋四方面进行了综述,指出新混凝土强度对新老混凝土界面的黏结性能的影响有限,过分追求新混凝土强度不经济。可在新混凝土里掺加特殊材料,提高受力性能,有效约束开裂。界面植筋效果优良,且为延性破坏,但结合面的黏结性能与植筋率的量化关系值得进一步研究。
[Abstract]:The bond strength of the new and old concrete bonding surface can directly determine the bond strength of the repaired new and old concrete. The bond strength of the new and old concrete bonding surface is determined by many factors. The selection of repair materials and interfacial agents and interfacial reinforcement are reviewed. It is pointed out that the strength of new concrete has limited effect on the bond properties of new and old concrete interface. The excessive pursuit of new concrete strength is not economical. Special materials can be added to the new concrete, which can improve the mechanical properties and effectively restrain the cracking. The effect of interfacial reinforcement planting is good, and it is ductile failure. However, the quantitative relationship between the bonding properties of the bonded surfaces and the percentage of tendons is worth further study.
【作者单位】： 上海理工大学环境与建筑学院;
【基金】：国家自然科学基金项目(51408359) 上海高校青年教师培养资助计划项目(1015307801)
【分类号】：TU528
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本文编号：1584698