CGM grout material why cracking phenomenon

CGM grout CGM high-strength grouting material high strength grouting material CGM high-strength non-shrinkage grouting material why have cracking phenomenon cracking problems: 1, the strength of the product. Part 2, expansion enough, or late expansion force is not enough. 3, it is possible that the grouting material water loss too fast, resulting in crack. 4, CGM grout material mixing in the process of adding water too much.