摘要
为了对热再生中新旧沥青融合的程度进行定量分析,采用傅里叶红外光谱分析仪(fourier transform infrared,FTIR)对废旧沥青路面材料(recycle asphalt pavement,RAP)热再生过程中新旧沥青的融合程度进行研究。根据苯乙烯丁二烯嵌段共聚物(styrene-butadiene block copolymer,SBS)和基质沥青具有不同红外特征峰的特点,将SBS作为沥青示踪剂,并基于分层溶解法提出了一种可以定量分析新旧沥青融合程度的方法,并通过此法对热再生过程中的拌和温度、拌和时间以及木质素纤维对新旧沥青融合程度的影响进行了研究,结果表明:随着拌和温度和拌和时间的提高,新旧沥青的融合和程度也随之提高,木质素纤维的加入也会提高新旧沥青的融合程度。
In order to quantitatively analyze the degree of fusion of old and new asphalt in thermal regeneration,Fourier transform infrared spectroscopy(FTIR)was used to analyze the fusion degree of recycled asphalt pavement(RAP)to study the degree of fusion of old and new asphalt during thermal regeneration.According to the different infrared characteristic peaks of styreneic-block copolymers(SBS)and base asphalt,using SBS as asphalt tracer,a method for quantitative analysis of the degree of fusion between old and new asphalt was proposed based on the layered solution method.The effect of mixing temperature,mixing time and lignin fiber on the fusion degree of new and old asphalt in the thermal regeneration process was studied by this method.The results show that with the increase of mixing temperature and mixing time,the degree of fusion between old and new asphalt also increases,and the addition of lignin fiber also improves the degree of fusion between old and new asphalt.
作者
孙建诚
张伟丁
王真
齐杨
SUN Jian-cheng;ZHANG Wei-ding;WANG Zhen;QI Yang(Civil Engineering & Traffic College, Hebei University of Technology, Tianjin 300401, China;Beijing Municipal Road and Bridge Building Materials Group Co., Ltd., Beijing 100176, China;Faculty of Urban Construction, Beijing University of Technology, Beijing 1000124, China)
出处
《科学技术与工程》
北大核心
2022年第10期4143-4151,共9页
Science Technology and Engineering
基金
天津市科技计划(16ZXCXSF00110)。
关键词
道路工程
废旧沥青混合料
傅里叶红外光谱分析仪
新旧沥青
融合程度
分层溶解
road works
recycle asphalt pavement
fourier transform infrared
old and new asphalt
degree of integration
layered dissolution
