Ultra-early-strength Cement Stabilized Aggregate Performance

In order to finish the mending and paving working of road surface as soon as possible, we have to improve the early intensity of the cement stabilized crushed stones basic, and guarantee the excellent performance at later stage. For reason of this is that the cement stabilized crushed stones need long time to form the intensity. If the cement stabilized crushed stones had been loaded during this period, its mechanics nature would be influenced greatly. This paper studied many kinds of pavement performance after the cement stabilized crushed stones had been added the CS-I rapid patching additive based on a large number tests, such as mechanics performance, shrink characteristics, water stability, erode performance and tired performance etc. Meanwhile, this paper studied the delaying time influence on the mechanics performance of the rapid strength cement stabilized crushed stones, and analyzed the early strength mechanism of rapid strength cement stabilized crushed stones. The results indicate that adding the rapid patching additive can improve the early intensity greatly of the cement stabilized crushed stones, and the long time intensity hasn't reduced; The pavement performance of rapid strength cement stabilized crushed stones is more better than the common cement stabilized crushed stones, such as the shrink characteristics, water stability, erode performance and tired performance; Adding the rapid patching additive can reduce the sensitiveness to delaying time of the cement stabilized crushed stones. In addition, this paper had also drawn the relationship between the cement content, the mixing amount of additive, test time and the compression, and that will be auxiliary for material design.