摘要
本文以裂缝、气泡和缺角掉边这三种常见缺陷为例,分析缺陷形成的主要原因有原材料不合格、构件脱模或吊运时混凝土强度没有达到规定值或受较大外力的碰撞挤压等;建议的防治措施有做好原材料进场检验、严格控制混凝土水灰比、控制塌落度等;给出的修补方法有清理基层、修补、干燥后保湿养护,最后打磨修补面,使修补处和附近的预制构件整体平整成一体,减小修补色差。
Taking cracks, bubbles and missing edges as examples, this paper analyses the main causes of the defects, such as unqualified raw materials, failure of concrete strength in demolding or lifting of components or collision and extrusion by relatively large external forces, etc. Suggested preventive measures are to do a good job of raw material entry inspection and strictly control coagulation. Soil-water-cement ratio, control of collapse degree, etc. The repairing methods given include cleaning the base, repairing, moisturizing after drying, and finally polishing the repairing surface, so as to make the repairing site and nearby prefabricated components flat as a whole and reduce the repairing chromatic aberration.
出处
《科技创新导报》
2019年第26期44-45,共2页
Science and Technology Innovation Herald
基金
2018江苏省建设厅科技项目(项目编号：2018JH024003)
关键词
预制构件
外观缺陷
修补
Prefabricated components
Defects
Repair
