Splitting Strength Detection Test of Shallow Asphalt Pavement and Master Curve of Splitting Strength

摘要

In order to realize effective detection of the splitting strength of shallow asphalt pavement, using the self researched and developed Strength Detector of Shallow Pavement, researched deep into the change regulation between shallow pavement strength and temperature by laboratory and spot penetrating experiments in multiple temperatures. First of all, the splitting strength is found to be a linear function of the average penetrating depth; Secondly, on the basis of temperature and average penetrating depth equivalence principle, obtained the master curve of the splitting strength by translation and fitting. Established a unified and practical test standard for the Strength Detector of Shallow Pavement; At last, analyzed the spot penetrating experiments data of three different types of asphalt pavement in Harbin district. The results show that the splitting strength curve of asphalt pavement in Harbin district appear a deep V-shaped character from April to October. The differentials between splitting strength of the three different types of asphalt pavement maximize in July.