基于沥青与集料界面粘附性的抗剥落剂的开发.pdf

第25卷 第2期 长安大学学报(自然科学版) Vol.25 No.2 2005年3月 JournalofChanganUniversity(NaturalScienceEdition) Mar.2005 文章编号:1671-8879(2005)01-0016-05 基于沥青与集料界面粘附性的抗剥落剂的开发 周卫峰 ,2‘，张秀丽 ，‘原健安 “，戴经梁2 (1.天津市市政工程研究院，天津300074;2.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) 摘 要:为研究沥青与集料的粘附性，定量测定了沥青各组分与集料粘附性的大小。对沥青电性 能、接触角、粘度与粘附性关系进行了探讨。研究了集料彗电位、粒径对粘附性的影响。结果表明 营电位值与粘附性有较好的相关关系，其值越大，粘附性越好;与大粒径集料不同，细集料粘附性似 乎取决于表面积的大小，而与集料化学组成关系不大;从水煮处理花岗岩能提高粘附性现象出发， 研制出杭剥落剂。该杭剥落剂处理集料表面能提高混合料水稳定性及高温稳定性，配制的改性沥 青能极大提高沥青混合料高温性能。 关键词:道路工程;沥青混合料;粘附性;组分;击穿电压;9电位;表面积;杭剥落剂 中图分类号:U414.3 文献标识码:A Developmentofnewanti-strippingagentbased onadhesionofasphaltwithaggregate ZHOUWei-fengl.2，ZHANGXiu-1i，YUANJian-ant，DAIJing-liang (1.TianjinMunicipalEngineeringResearchInstitute,Tianjin300074,China;2.KeyLaboratoryfor SpecialAreaHighwayEngineeringofMinistryofEducation,ChanganUniversity,Xian710064，China) Abstract:Adhesionsofdifferentasphaltconstituentwithaggregatewereaccuratelymeasured.Therela- tionshipbetweenelectricproperty,contactangle,viscosityandadhesionwasstudied.Theeffectofag- gregates参electricpotential,surfaceareaonadhesionwasstudied.Experimentalresultsshowthatthe largerthe奋electricpotentialis,thebetteradhesionofaggregatewithasphaltis;theadhesionoffineag- gregatewithasphaltisrelatedtoitssurfacearea,andhaslittlerelationwithchemicpropertiesofaggre- gate;theadhesionofgranitecanbeimprovedwhenthegraniteistreatedbyboilingwater.Basedonthose results,ananti-strippingagentwasdeveloped.Ifaggregatesurfaceistreated,theanti-strippingagent canimproveitswaterdamageresistance,andhightemperaturepropertyofasphaltismodified,theanti- strippingagentcangreatlyincreaseitsrut-resistanceability. Keywords;roadengineering;asphaltmixture;adhesion;asphaltconstituent;breakdownvolt- age;梦electric