大体积混凝土表面裂缝灌浆材料的试验研究

Research on Grouting Material for the SurfaceCrack of Big Physical Volume Concrete

针对穴体积混凝土浇灌后出现的裂缝问题,在分析国内外研究成果和国内现有灌浆修补材料的基础上,选取了聚氨酯灌浆材料。研究分析了稀释剂、填料等对粘结强度的影响,以及固化状态、时间等对粘结强度的影响。试验表明,聚氨酯灌浆料具有粘结强度高、稳定性好、固化时间短、施工简便等特点,尤其是能在潮湿界面中使用,与同类产品相比,价格低廉、经济合理,可以推广应用。

This paper , on the basis of analysing the study achievements at home and abroad ,and -grouting material at home , has selected polyurethane as grouting material for the crack of the big physical volume concrete , and analysed that diluent , filling element awl solidified state and solidified time have influence on the binding strength . The experiment results show that the grouting material has binding strength more powerful , of better stability , of shorter solidified time , of simpler construction and cheaper price , and can be especially used in the moist surface .It Can be expanded to the application.