High-strength non-shrink grout material increase section pillar construction

Reinforcement project USES high-strength non-shrink grout material is becoming more common, as the reinforcing market booming, more and more new building materials and keep up side by side, but we really poured over the construction personnel? Poured over indices such as physics, chemistry, stress of the material? Has also appeared in some time ago, there was a site due to the high strength non-shrinkage grouting material construction cracks problem, I personally a little a little digging, grinding, split, inspection, to make detailed records and location, consult experts torque, moment of force analysis, modeling. Draw the conclusion: the construction water ash is bigger, cause local size is too big, almost no aggregate. Is often said that 'segregation'. Such cracks will need to cut, paste part to die, and glue the grouting material filling water. Some cracks are micro cracks caused by exterior temperature difference, is not deep, epidermis in 2 ~ 3 mm, slit width is 0. 3 mm. With the pure water mud mixed building glue 1:2 brush interface. Basically is ok.