摘要
采用试验计算与数值分析相结合的方法研究了掺木质素絮状纤维和掺玄武岩束状纤维对改善SMA-13沥青混合料的高温稳定性能、低温抗裂性能、抗水损害性能、抗冻融性能的影响。结果表明,从沥青混合料的体积指标角度分析,掺玄武岩束状纤维与掺木质素絮状纤维效果接近;从沥青混合料的力学性能、耐久性能的角度分析,同等掺量下,掺入玄武岩纤维的路用性能优于掺入木质素纤维的路用性能,掺入玄武岩纤维的沥青混合料动稳定度、残留稳定度、冻融劈裂强度均优于掺木质素絮状纤维,前者的改善效果更为显著。
This article uses a combination of experimental calculations and numerical analysis to study the effects of adding basalt fiber and lignin fiber on improving the hightemperature stability,low-temperature crack resistance,water damage resistance,and freeze-thaw resistance of SMA 13asphalt mixtures.Research has shown that from the perspective of volume index of asphalt mixture,the effect of adding basalt fiber is similar to that of adding lignin fiber.From the perspective of mechanical and durability properties of asphalt mixtures,under the same dosage,the road performance of asphalt mixtures mixed with basalt fibers is better than that of asphalt mixtures mixed with lignin fibers.The dynamic stability,residual stability,and freeze-thaw splitting strength of asphalt mixtures mixed with basalt fibers are all better than those of asphalt mixtures mixed with lignin fibers.The improvement effect of the former is more significant.
作者
程钾
邓美林
申铁军
CHENG Jia;DENG Meilin;SHEN Tiejun(Shanxi Road&Bridge No.6 Engineering Co.,Ltd.,Shanxi Jinzhong 030600 China;School of Electric Power,Civil Engineering and Architecture Shanxi University,Shanxi Taiyuan 030024 China;Shanxi Road&Bridge Construction Group Co.,Ltd.,Shanxi Taiyuan 030031 China)
