胶粉改性沥青排放物采样及定量分析方法  

Sampling and quantitative analysis method of emissions from crumb rubber modified asphalt

作　　者：朱洪洲[1,2] 苏春力 唐乃膨 魏俊尧 孙宏军 ZHU Hong-zhou;SU Chun-li;TANG Nai-peng;WEI Jun-yao;SUN Hong-jun(National&Local Joint Engineering Research Center of Transportation and Civil Engineering Materials,Chongqing Jiaotong University,Chongqing 400074,China;School of Civil Engineering,Chongqing Jiaotong University,Chongqing 400074,China;Hebei Transportation Investment Resources Development and Utilization Co.Ltd.,Shijiazhuang 050090,China)

机构地区：[1]重庆交通大学交通土建工程材料国家地方联合工程研究中心,重庆400074 [2]重庆交通大学土木工程学院,重庆400074 [3]河北交投资源开发利用有限公司,石家庄050090

出　　处：《吉林大学学报（工学版）》2024年第10期2922-2929,共8页Journal of Jilin University:Engineering and Technology Edition

基　　金：国家自然科学基金项目(51808073);重庆市自然科学基金项目(cstc2021jcyj-msxmX0637);重庆市教育委员会科学技术研究计划青年项目(KJQN202100725);重庆交通大学研究生科创基金项目(2021S0018)。

摘　　要：为定量分析胶粉改性沥青排放物,本文采用自研烟气采样方法与气相色谱质谱分析(GC-MS)内标法对胶粉改性沥青的排放进行量化分析。结果表明:烟气样品加标回收率良好,未出现吸附穿透,试验变异性较低,标准曲线线性相关性良好;胶粉掺入显著提高了苯系物与苯并噻唑、三甲基二氢喹啉等胶粉改性沥青特征排放物的排放量;胶粉改性沥青相较于基质沥青,正构烷烃排放有所下降,PAHs排放与基质沥青相当,其中萘为主要的PAHs排放。Crumb rubber modified asphalt(CRMA)has technical advantages in terms of cost saving,performance enhancement,etc.However,CRMA produces a large amount of harmful gases during pavement construction,and it is urgent to quantitatively analyze the emissions of CRMA.In this paper,a method for sampling CRMA emissions was developed,and gas chromatograph-mass spectrometer(GCMS)with internal standard method was used to quantitatively analyze the chemical compositions of CRMA emissions.The main conclusions are as follows.The standard recovery rate is good,and there is no adsorption breakthrough during the process of emissions collection.The standard curves of different concentration range have good linear relationships.The addition of crumb rubber significantly increases the emission of benzene series,benzothiazole,trimethyl dihydroquinoline and other CRMA characteristic emissions.Compared with neat asphalt,the emission of n-alkanes from CRMA decreases.The emission of PAHs from CRMA is similar to that from neat asphalt.Naphthalene is the main component of the PAHs released from CRMA and neat asphalt.

关 键 词：道路工程 胶粉改性沥青 特征排放 气相色谱-质谱联用仪 内标法 

分 类 号：U414[交通运输工程—道路与铁道工程]