The difference between the pressure slurry and cement

Before pressure slurry product was available, many customers directly in cement grouting water mixed with just the right amount of expansion agent, the fluidity of cement slurry mixture is not high, slurry density is not enough, easy to appear uneven hole grouting, empty pulp, pulp phenomenon such as leakage, so bridge collapse have been staged, so the hole pressure paste products how important it is, it is not only the need of the industry, but also the need of the society, in 2011 the government introduced a 'new bridge gauge', products with xinqiao pressure gauge hole size is more important, because pressure paste products enhance the product performance, and on the fluidity and the protection of the prestressed reinforcement is out of reach for cement. The strength of the cement can meet the corresponding standards, but easy to sink, cement affect fluidity, can't guarantee can fully populated, more can't guarantee the entire section a good bond between prestressed reinforcement and concrete; And cement and water is more, easy to cause excessive bleeding rate, prestressed reinforcement is more easy to oxidation corrosion, directly affects the service life of bridge. Using channel pressure slurry product can completely solve the effect of cement cannot be achieved.