Several types of CGM high-strength non-shrinkage grouting material

CGM high-strength non-shrinkage grouting material CGM high-strength non-shrinkage grouting material has what type? Today to briefly introduce about cement grouting material specification ( GB / T 50448) Some of the models! The four models is designed in this specification, the CGM - respectively I、cgm- 二世,cgm - III、cgm- Four type IV! The way they divided mainly according to the liquidity of cement grouting material and particle size of dividing, strength is greater than 20 million mpa a day, three days is more than 40 million mpa, 28 days is greater than 60 million mpa, the coefficient of expansion and other data are the same! The initial fluidity CGM - I more than 380, CGM - II is greater than 340, CGM - Over 290, CGM - III IV is greater than 260. After 30 minutes of retention group corresponding to reduce 40 or so! The aggregate size of CGM - Type I no grain, CGM - Type II mainly 10 - 20 mm of quartz sand, CGM - Type III mainly 20 - 40 mm quartz sand ( 10 - 20 mm) cgm - Type IV bone grain is greatly meters stone or bean stone! Generally speaking, the former three types for anchor bolt, below the machine base, grouting steel structure, four types of grouting material is suitable for a chopping block, do basic, a machine equipment base!