摘要
Abstract
The application status of Shenzhen Binhai Avenue,the first batch of SMA asphalt concrete pavement in China,was investigated in detail,including the integrity of core samples,pavement deflection,anti-sliding performance and pavement driving quality.The survey results indicate that:(1)the three layer design has better interlayer continuity and larger pavement thickness compared to the double layer design,and the load transfer path is more reasonable and uniform,with better long-term heavy traffic resistance.(2)Due to the initial grading and porosity of the surface layer increasing from top to bottom during paving,the thickness range of the upper layer is the smallest among all surface layers,while the uneven settlement phenomenon caused by the load on the middle and lower layers is prominent.However,the transverse distance of each measuring point is not significantly related to the current pavement thickness.(3)Except for a very small number of points where the measured rut values are too large,and a small area of road surface has common damage conditions for long-term operation of roads,the entire section of the SMA asphalt pavement on Binhai Avenue maintains good operational quality under long-term heavy traffic operation conditions,with excellent load-bearing capacity,skid resistance,and rut resistance.关键词
SMA沥青混凝土/长期路用性能/运营状况Key words
SMA asphalt concrete/long-term road performance/operation status分类
交通工程
