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In order to solve many disadvantages of the artificial water curing method commonly used in precast beam yard, control the curing quality of precast beam, the intelligent curing system of cement concrete precast beam is developed, which adopt wireless sensor and automatic control technology collecting the temperature and humidity data of cement concrete components, when the preset threshold value is exceeded, the intelligent linkage curing robot can automatically control water quantity, spray frequency, curing time, intelligent water supplement in curing cycle in the curing process. The practice shows that the system can achieve all-weather, no dead angle continuous curing, effectively save water, reduce personnel input, improve the early strength of concrete, reduce the development of shrinkage cracks, and effectively improve the standardized, accurate and intelligent level of concrete precast beam curing work.

Rutting is a typical distress of rubber asphalt pavement under heavy loads. It is necessary to present a proper method to evaluate the high-temperature performance of rubber asphalt mixture. A newly developed repeated local-load permanent deformation test (RLLPDT) was conducted to evaluate the high-temperature performance of rubber asphalt mixtures. The Origin software is utilized to fit the test curve with creep models. Then the creep model and high temperature evaluation index (D1, Fn) were chosen according to their correlations along with the rutting test results and dynamic stability. The effectiveness and variability of D1 and Fn were verified. At last, the high temperature evaluation standard of crumb rubber asphalt (AR-VS13) and stabilized rubber asphalt (SUP-13 and SMA-13) mixture based on D1 and Fn was given according to the result of dynamic stability.