纤维稳定剂对提高SMA改性沥青路用性能影响研究  

Research on the Effect of Fiber Stabilizer on Improving SMA Modified Asphalt Pavement Performance

作　　者：李锋 LI Feng(Hainan Road and Bridge Engineering Co.,Ltd.,Sanya 572000,China)

机构地区：[1]海南路桥工程有限公司,三亚572000

出　　处：《价值工程》2022年第21期119-121,共3页Value Engineering

摘　　要：高温环境一直以来都是沥青路面最大的影响因素,其影响主要在于高温软化、面层开裂、重载下车辙裂缝等,不仅降低了路面行驶的舒适体验,也增加了沥青路面工程的返修费用,大大缩短了路面的设计使用年限,不利于现代化城市交通的规划发展。本文主要对SMA改性沥青混合料在30℃,40℃,50℃,60℃,70℃,80℃六种温度下(默认其他影响因素相同),SMA改性沥青混合料的温度稳定性及在掺入0.4%木质素纤维后SMA改性沥青混合料的温度稳定性进行比较,发现掺入0.4%木质素纤维后SMA改性沥青混合料的各项试验性能均比未掺入木质素纤维时有所提高,从而达到推荐指导合适的纤维稳定剂在SMA改性沥青混合料沥青路面中的使用目的,提高沥青路面各项性能指标。High temperature environment has always been the biggest influencing factor of asphalt pavement,and its influence mainly lies in high temperature softening,surface cracking,rut cracks under heavy load,etc.,which not only reduces the comfortable experience of road driving,but also increases the rework of asphalt pavement engineering.It greatly shortens the design service life of the pavement and is not conducive to the planning and development of modern urban transportation.This paper mainly studies the temperature stability of SMA modified asphalt mixture at 30℃,40℃,50℃,60℃,70℃,and 80℃(the other influencing factors are the same by default).The temperature stability of SMA-modified asphalt mixture after adding 0.4%lignin fiber was compared,and it was found that the experimental performance of SMA-modified asphalt mixture after adding 0.4%lignin fiber was better than that without lignin fiber.In order to achieve the purpose of recommending and guiding the use of suitable fiber stabilizers in SMA modified asphalt mixture asphalt pavement,and improving various performance indicators of asphalt pavement.

关 键 词：沥青路面 高温性能 SMA改性沥青混合料 木质素纤维 

分 类 号：U416.217[交通运输工程—道路与铁道工程]