CGM - 270 high-strength non-shrink grout material is introduced

CGM - High-strength non-shrink grout material introduces CGM - 270 270 high-strength non-shrink grout material is a kind of what kind of material, it and common CGM high-strength non-shrinkage grouting material what is the difference? CGM high-strength non-shrinkage grouting material is the floorboard of all cement-based grouting materials, grouting engineering in general, grouting material bone grain size and flow is divided into four categories, namely: category, second, three, four categories ( CGM - 1,CGM - 2,CGM - 3，CGM- 4) ; The corresponding classified by fluidity is: CGM - 380,CGM- 340年,CGM - 300年,CGM - 270. CGM - The concrete index of 270 high-strength non-shrink grout material is the most county material particle size greater than 4. 75 mm and less than 16 mm, the initial flow is greater than 270 mm, 30 min retention values greater than 240 mm; 3 h vertical expansion rate at 0. 1 to 3. 5%. The expansion of the 24 h and 3 h value difference of 0. 02 ~ 0. 5%; 1 d compressive strength is greater than 20 mpa, 3 d compressive strength is greater than 40 mpa, 28 d compressive strength is greater than 60 mpa; This material for reinforcement corrosion effect and bleeding rate of 0.