改性沥青SBS含量的红外光谱分析  

Application of infrared spectroscopy to detect the dosage of SBS in modified asphalt

作　　者：徐志荣[1,2] 陈忠达[1] 常艳婷 林杰[1,3] 陈峙峰[1,4] 

机构地区：[1]长安大学特殊地区公路工程教育部重点实验室,陕西西安710064 [2]延安市新区投资开发建设有限公司,陕西延安716000 [3]晋江市住房和城乡建设局,福建晋江362200 [4]河南中州路桥建设有限公司,河南周口466000

出　　处：《长安大学学报（自然科学版）》2015年第2期7-12,共6页Journal of Chang’an University(Natural Science Edition)

基　　金：国家自然科学基金项目(51208047)

摘　　要：为了准确检测改性沥青中SBS改性剂的含量,采用傅里叶变换红外光谱仪对基质沥青、SBS改性剂和SBS改性沥青进行透射光谱分析,根据波数966.1cm-1和698cm-1处出现的特征吸收峰,可定性判别改性沥青中SBS改性剂的存在状况,同时根据改性沥青中SBS改性剂含量与其波数966.1cm-1处的特征吸收峰的吸光度关系,建立了SBS改性剂含量与特征吸收峰处吸光度的线性回归模型,以此来定量分析改性沥青中SBS改性剂含量。研究结果表明:SBS改性剂含量检测结果与实际SBS改性剂掺量基本一致,红外光谱分析法能有效检测改性沥青中SBS改性剂的含量,从而实现对SBS改性沥青质量的监控。In order to accurately detect the dosage of SBS modifier in modified asphalt,this paper mainly analyzes the transmittance spectra of matrix asphalt,SBS modifier and modified asphalt with the help of Fourier transform infrared spectroscopy.The condition of SBS modifier in modified asphalt can be identified on the basis of characteristic absorption peaks occurred in the wave numbers of 966.1cm-1 and 698.1cm-1.According to the relationship between the dosage of SBS in modified asphalt and its absorbance of characteristic absorption peak in the wave number of 966.1cm-1,a linear regression model between the dosage of SBS and the absorbance of characteristic absorption peak was established.The results show that the detected dosage of SBS and the actual dosage of SBS are basically the same.It shows that the infrared spectroscopy can effectively detect the dosage of SBS in modified asphalt,thus achieving effective monitoring ofthe quality of modified asphalt is also enabled.

关 键 词：道路工程 红外光谱 SBS改性沥青 SBS含量 最小二乘法 吸光度 

分 类 号：U415.522[交通运输工程—道路与铁道工程]