Problem solving - CGM grout material High-strength non-shrinkage grouting material

CGM grout CGM high-strength grouting material high strength grouting material a, summer using CGM grout material casting, solidification special slow, after ten hours is not set, the temperature there is no problem, operation is no problem, after the solidification strength can meet the requirements? What is going on here, Shanghai bao grouting material smelting expert of aggravation for you; Summer CGM high-strength grouting material in general is not early strength component, you ten hours of solidification of water to add a little more, after solidification strength no problem that grouting material itself has no grouting material initial setting general 2 hours, 10 hours final set. Why the same batch CGM high-strength grouting material used in front of the coagulation time is slow, behind is slow? Grouting material treasure and metallurgy experts for you row? Should itself is not too big relations, and products manufacturer, give you the goods in the same car sent there products are much less likely, and with what? With the weather, the temperature difference between morning and evening ZhongMou grouting material manufacturers also. , temperature humidity increase after change, will cause the grouting is no problem in the morning and afternoon is not set. Have direct relationship with water, if when you see the grouting material is very thin, but this time the water has been added, 12. 5 - 13. 5%, the dosage of each manufacturer is less than. Second, CGM high-strength after about fly ash grouting material of antifreeze security issues, have carried out extensive research worldwide. The poor quality with the increase of dosage of fly ash, grouting material durability of freezing-thawing resisting drastically reduced. But when a better quality of mixed with fly ash ratio, can effect by improving freezing-thawing resisting durability of original grouting material of the latest quotation. Times are at the same time reduce the water cement ratio, can effect by improving freezing-thawing resisting durability. Air transport a bureau research used need not fineness, different ignition loss of fly ash grouting material, treasure more grouting material, antifreezing test BY grouting materials, the results showed that the increased with the increase of fineness of fly ash and ignition loss, down the frost resistance of fly ash grouting material. Chongqing grouting lunar institute of water resources and hydropower research of fly ash grouting material, treasure more grouting material, frost resistance BY grouting materials done systematically studies, proves that under the condition of isometric substitute, fly ash yield was 15%, the frost resistance of concrete can be improved, but when the dosage of fly ash exceeds a certain scope, will lead to freeze resistance affected BY grouting material.   Moderate intensity CGM high strength fly ash grouting material should not be ignored, carbide in high-performance CGM high-strength grouting material, treasure more grouting material, BY grouting material, if use at a higher proportion of fly ash to replace cement, such as weight may exist problems, carbide GBJ146 - 90 rules on the fly ash replacing cement limited in the grouting material.   Through long-term research and engineering practice, to prevent mixing fly ash concrete carbonation, the primary factor is to ensure that the compactness of fly ash grouting material. Only compactness guaranteed, carbonation resistance can be improved.     Inhibitory effect of fly ash on ASR when grouting material, treasure more grouting material, BY grouting material after adding fly ash, fly ash and cement in the alkali reaction, can prevent the alkali - The over-expansion of aggregate reaction causes can be summarized as: (1) fly ash physical dilution effect of alkali; (2) acid of fly ash particles in R + ( Na +, K +) And OH - Stranded, adsorption; (3) fly ash and Ca ( 哦) 2 volcanic reaction to reduce or even eliminate system of Ca ( 哦) 2; (4) fly ash and Ca ( 哦) 2 low ash of Ca/Si ratio, high specific surface area of CSH product of alkali adsorption and retention; (5) fly ash and cement hydration products of cement ash reaction structure densification, preventing lye apologies, reduce R + and OH - From several aspects such as diffusion coefficient of cement stone. In computer unilaterally grouting material, jinan CGM high-strength total base amount of grouting material, fly ash into the effective alkali quantity is calculated according to 15% of the total quantity of fly ash.