CAJ | 학술논문

为改善温拌高模量沥青混合料的低温抗裂性和疲劳耐久性，采用 BBR、拉伸试验、低温弯曲试验和3分点加载疲劳试验的试验方法，研究了木质素纤维掺量对温拌高模量沥青及其混合料抗裂性能的改善作用。试验结果表明：掺加木质素可显著改善温拌高模量沥青混合料的低温抗裂性，综合考虑木质素纤维掺量对温拌高模量沥青混合料低温抗裂性和抗疲劳开裂性能的影响，推荐适宜的木质素掺量为3‰～4‰，木质素纤维对温拌高模量沥青混合料的改善机理在于其吸附稳定作用、纤维界面增强作用、加筋阻裂作用。
위개선온반고모량력청혼합료적저온항렬성화피로내구성，채용 BBR、랍신시험、저온만곡시험화3분점가재피로시험적시험방법，연구료목질소섬유참량대온반고모량력청급기혼합료항렬성능적개선작용。시험결과표명：참가목질소가현저개선온반고모량력청혼합료적저온항렬성，종합고필목질소섬유참량대온반고모량력청혼합료저온항렬성화항피로개렬성능적영향，추천괄의적목질소참량위3‰～4‰，목질소섬유대온반고모량력청혼합료적개선궤리재우기흡부은정작용、섬유계면증강작용、가근조렬작용。
In order to improve the low temperature crack resistance and fatigue durability of warm-high modulus asphalt mixture.This article use BBR tensile test 、low-temperature bending test and three point loading fatigue test method,studied the influence of lignin fiber content on crack resistance of warm-high modulus asphalt and its mixture.results show that:adding the lignin can significantly improve the low temperature crack resistance of warm-high modulus asphalt mixture,Considering the affect of lig-nin fiber content on low temperature crack resistance and fatigue cracking resistance of warm-high modu-lus t mixture,recommend appropriate lignin content of 3‰ ~4‰.the crack resistance influence mecha-nism of Lignin fiber on warm-high modulus asphalt and its mixture is enhancement effect,reinforced fiber interface and crack resistance effect.