FCC废催化剂与沥青混合体系的相态变化研究  

Study on Phase Change of Mixture System of FCC Waste Catalyst and Asphalt

作　　者：舒诚 邰真军 曹涛 吴楚枫 孔令云[3] SHU Cheng;TAI Zhenjun;CAO Tao;WU Chufeng;KONG Lingyun(CCCC First Highway Xiamen Engineering Co.,Ltd.,Xiamen,Fujian361021,China;Hubei Road&Bridge Group Co.,Ltd.,Wuhan,Hubei430115,China;School of Civil Engineering,Chongqing Jiaotong University,Chongqing400074,China)

机构地区：[1]中交一公局厦门工程有限公司,福建厦门361021 [2]湖北省路桥集团有限公司,湖北武汉430115 [3]重庆交通大学土木工程学院,重庆400074

出　　处：《施工技术（中英文）》2022年第16期100-104,共5页Construction Technology

基　　金：国家自然科学基金(51508062);重庆市基础科学与前沿技术研究项目(cstc2017jcyjAX0367)。

摘　　要：为研究FCC废催化剂加入沥青后,整个混合体系的相态变化情况,选择2种FCC废催化剂与沥青形成混合体系,并从热学角度和动态力学角度分析其相态变化行为。试验结果表明,随着FCC废催化剂掺量的提高,沥青混合料的低温性能先提高后降低;材料的储能模量和损耗模量随温度的升高而降低,且相比于储能模量,损耗模量对相分离表现更不敏感。温度<55℃时,混合体系的黏性成分随温度升高而增加,此时混合体系属于均相聚合物,无相态分离现象发生。In order to study the phase change of the whole mixture system after FCC waste catalyst was added to asphalt,two kinds of FCC waste catalysts were selected to form the mixture system with asphalt,and it’s phase change behavior of FCC waste catalyst was analyzed from the thermal and dynamic mechanical perspectives.The results shows that with the increase of FCC waste catalyst content,the low⁃temperature performance of asphalt mixture increased first and then decreased.The storage modulus and loss modulus of the material decreased with the increase of temperature,and the loss modulus was less sensitive to phase separation than the storage modulus.When the temperature was lower than 55℃,the viscous component of the mixture system increased with the increase of temperature.In this case,the mixture system belonged to homogeneous polymer,and no phase separation occurred.

关 键 词：沥青 FCC废催化剂 低温性能 相态变化 动态力学分析 

分 类 号：U414[交通运输工程—道路与铁道工程]