Abstract
This study aims to maximize the effects of reducing plastic deformation in heavy traffic intersections in urban areas by improving the aggregates and binders of asphalt mixtures in order to verify the strength effect of SMA (Stone Mastic Asphalt) mixtures compared with that of fluid-resistant asphalt mixtures. The authors examine the pavement performance and conduct an economic analysis for sustainable urban infrastructure. Additionally, to reduce plastic deformation, the study analyzed an improvement plan through experimental research based on the existing literature. First, we determined the mixing design specifications of the general asphalt fluid-resistant mixture and SMA mixture, which is known to reduce plastic deformation. Next, we confirmed the appropriateness of the raw materials and mixing design results. Finally, a performance test was conducted on plastic deformation resistance. A wheel tracking test was also conducted as a performance experiment. The test body—with a fiber grid reinforcing material installed in the SMA mixture—showed high dynamic stability, which was the most effective for reducing plastic deformation.
Highlights
Reduction of Plastic Deformation in Plastic deformation of asphalt pavements in metropolitan areas hinders smooth passage for road users [1,2] and adds to the social costs of road maintenance [3,4]
Metropolitan intersections are vulnerable to plastic deformation because of the behavior of asphalt mixtures at high temperatures
Under summer high-temperature conditions, because of the properties of plastic deformation, the interlocking aggregates of samples of 1st-class aggregates (SMA) mixtures are primarily involved in the resistance of plastic deformation when the asphalt goes through viscous movements
Summary
Reduction of Plastic Deformation in Plastic deformation of asphalt pavements in metropolitan areas hinders smooth passage for road users [1,2] and adds to the social costs of road maintenance [3,4]. Metropolitan intersections are vulnerable to plastic deformation because of the behavior of asphalt mixtures at high temperatures. This is mostly the effect of heavy vehicle traffic and long waiting periods [5,6,7,8]. Unlike normal cases where road surfaces—such as auxiliary layers, substrates, intermediate layers, and surface layers—connect, traffic cannot be completely switched in these intersections.
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