低温沥青混合料USPM-13C在市政道路中的应用

Application of USPM-13C Low-Temperature Modified Asphalt Mixture in Municipal Road

摘要: 本文在沥青混合料配合比设计的基础上，通过高温稳定性试验、低温抗裂性试验和水稳定性试验，对比研究了低温沥青混合料USPM-13C和SBS改性沥青混合料AC-13C的路用性能。结果表明，低温沥青混合料USPM-13C的动稳定度值是SBS改性沥青混合料AC-13C的96.4%，而低温弯曲破坏应变增加6%，残留稳定度及残留强度比增加2%以上。本文结合市政道路工程实践介绍了低温沥青混合料USPM-13C的应用情况，可为今后其他项目设计和施工提供一些参考。

Abstract: In this paper, on the basis of the mix proportion design of asphalt mixture, the pavement performance of low-temperature modified asphalt mixture USPM-13C and SBS modified asphalt mixture AC-13C is compared and studied through high-temperature stability test, low-temperature crack resistance test and water stability test. The results show that the dynamic stability value of low-temperature modified asphalt mixture USPM-13C is 96.4% of that of SBS modified asphalt mixture AC-13C, while the low-temperature bending failure strain increases by 6%, the residual stability and residual strength ratio increase by more than 2%. Combined with municipal road engineering practice, the application of low-temperature modified asphalt mixture USPM-13C is introduced, which can provide some references for the design and construction of other projects in the future.