Long curing period, if the curing is in place, is beneficial to the water-stable layer and helps to improve the strength of cement stabilized materials. Generally speaking, due to the construction period or labor cost, the maintenance cycle will be shortened. Too long curing period, such as 10- 15 days, has little effect on cement stabilized materials. During this period, it is necessary to spray water for maintenance.

Through the tests of sand, crushed stone, cement and fly ash, crushed stone and cement, it is found that the cement stabilized mixture mixed with fly ash is not only good in workability, but also easy to form, and the formed test block has good appearance and high average strength in 7 days.

Extended data:

Water content control of mixture. At the scene of the factory-mixed mixture, full-time testers in the backcourt measure the water content of various aggregates every morning, noon and afternoon, and determine the water consumption when mixing the mixture according to the optimal water content index designed by the construction mixture ratio and the temperature, humidity and transportation distance of the day.

Full-time testing personnel in the frontcourt who are responsible for testing the degree of compaction also measure the water content of the mixture in time during the paving and molding of the mixture, instruct the road roller to roll it in time, and try to roll it under the best water content condition, so as to avoid the phenomenon of "bounce" and "wave" due to excessive water content, which will affect the density and strength of the mixture.

Baidu encyclopedia-water stable layer