华东理工大学学报（自然科学版）2018，Vol.44Issue(1)：21-27,7.DOI:10.14135/j.cnki.1006-3080.20170315004
SBS改性浅色沥青胶结料的流变性能
Rheological Properties of SBS Modified Colored Binders for Asphalt Concrete Pavement
摘要
Abstract
Colored asphalt concrete pavement is conducive to traffic guidance,and can also prevent and control road traffic accidents in an effective way.Recently,colored asphalt concrete pavement is used for preventing " heat island" phenomenon in many cities because dark asphalt pavements have strong absorption of sunlight.Colored binder is the main component of colored asphalt concrete.In this paper,a light-colored binder was prepared and modified by adding EVA (ethylene-vinyl acetate copolymer) and SBS (styrene butadiene styrene block polymer) into the mixture of a C9 resin and a vacuum gasoil.The vacuum gasoline had a high aromatic content in order to dissolve C9 resin to form a base light-colored oil of the binder.EVA and SBS were employed to improve the rheological properties of the binder since the two polymers were wildly used in the modification of conventional asphalt.The rheological properties of the prepared light-colored binder,several commercial binders and a 70# asphalt were determined and compared.Results show that the introduction of EVA and SBS can significantly improve the properties of the light-colored binder,including penetration,softening point and ductility.The addition of SBS in the binder leads to a remarkable increase in viscosity of the light-colored binder,and properties of dissipation factor and viscosity temperature sensitivity of the prepared binder are also improved.Dynamic shear and stress tests show that the composite modulus of the light-colored binder is slightly improved.The loss factor of the binder presents a yielding point around 50 ℃,which means its temperature sensitivity at high temperature was improved by the addition of SBS.Moreover,the rutting resistance ability of the SBS modified light-colored binder is enhanced.The deformation recovery rate of the SBS modified light-colored binder can reach the Chinese national standard level of 70 # asphalt,which indicates that the croop property of the light-colored binder is satisfied.关键词
浅色胶结料/EVA/SBS/改性/流变性能Key words
colored binders/EVA/SBS/modified/rheological properties分类
化学化工引用本文复制引用
赵亮,查如俊,陈琪,张晓露,沈本贤,凌昊..SBS改性浅色沥青胶结料的流变性能[J].华东理工大学学报（自然科学版）,2018,44(1):21-27,7.基金项目
广州市科技计划项目(201604020126) （201604020126）
