Abstract
Semi-rigid base course is widely applied in pavement construction. However, because the inorganic binder tends to be affected easily by environmental factors (temperature, moisture), the cracking of semi-rigid base course is a serious problem, which causes reflection cracks on the surface layer. That is one of the main damage types of this kind of pavement structure. In view of the above problems, scholars all over the world have carried out researches on the cracking mechanism and the causes of cracks. Combined with engineering practices, various kinds of reflective crack prevention technologies have been proposed. In this paper, the author systematically investigates the existing retarding methods. According to their characteristics, it is mainly divided into three categories: surface anti-cracking treatment, base anti-cracking treatment and stress absorption structure addition. Meanwhile, the main principles and effects of these three categories of measures are analysed and summarized to provide the reference for subsequent study and design.
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