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1、第18卷第3期建筑材料學(xué)報(bào)Vol_18,No.32015年6月J0URNALOFBUILDINGMATERIALSJuI1-,2015文章編號(hào):1007—9629(2015)03—0450—08布敦巖礦料對(duì)瀝青混合料性能的影響陸學(xué)元,張素云。吳一祝(1.安徽省高速公路控股集團(tuán)有限公司,安徽合肥230088;2.安徽交通職業(yè)技術(shù)學(xué)院土木工程系,安徽合肥230051;3.印尼布敦巖瀝青有限公司,雅加達(dá)006221)摘要:以7O#A級(jí)道路石油瀝青為基質(zhì)瀝青,對(duì)布敦巖瀝青中巖礦料摻量(質(zhì)量分?jǐn)?shù),下同)分別為0,0.5,1.0%,2.0,3.0,4.0的6種AC20
2、礦料級(jí)配布敦巖瀝青混合料路用性能進(jìn)行了研究.結(jié)果表明:布敦巖瀝青原材料中的巖礦料對(duì)礦料級(jí)配組成與路用性能均影響較大,合理選擇巖礦料摻量可顯著提高瀝青混合料綜合路用性能,較優(yōu)摻量為0.5%~1.0%時(shí)其綜合路用性能接近于SBS改性瀝青混合料,但對(duì)提高其水敏感性有限;巖礦料摻量變化對(duì)布敦巖瀝青混合料動(dòng)穩(wěn)定度的影響較為顯著,這兩者的關(guān)系表現(xiàn)為凹形曲線特征;不能將布敦巖瀝青原材料像SBS改性劑一樣加入基質(zhì)瀝青中進(jìn)行馬歇爾試驗(yàn)來(lái)確定巖瀝青原材料摻量,配合比設(shè)計(jì)時(shí)應(yīng)考慮布敦巖瀝青材料自身的特殊性,將巖礦料與純巖瀝青剝離開(kāi)來(lái)并單獨(dú)摻配使用;忽略布敦巖瀝青中巖礦料的級(jí)配組
3、成會(huì)對(duì)巖瀝青混合料性能產(chǎn)生較大影響.關(guān)鍵詞:道路工程;布敦巖礦料級(jí)配;路用性能;AC20布敦巖瀝青混合料;最佳布敦巖摻量;組成設(shè)計(jì)中圖分類號(hào):U414文獻(xiàn)標(biāo)志碼:Adoi:10。3969/i.issn。1007-9629。2015.03。016InfluenceofButonRockonPerformanceofAsphaltMixtureL【,Xueyuan,ZHANGSuyun,wUfan。(1.AnhuiExpresswayHoldingGroupLimited,Hefei230088,China;2.DepartmentofCivilEnginee
4、ring,AnhuiProvinceTransportationOccupationTechnicalCollege,Hefei230051,China;3.IndonesianButonRockAsphaltCo.,Ltd.,Jakarta006221,Indonesian)Abstract:SixdifferenttypesofAC20mineralaggregategradationareprovidedwithdistinctButonrockmixture.a(chǎn)ndthepavementperformanceofButonrockasphaltmi
5、xturewasconductedbytakingAH一70roadasphaltasbasis.TheresultsshowthatrockmineralinrawmaterialsofButonrockasphalthasagreatimpactonthemineralaggregategradationandpavementperformance,andappropriateselectionofrockmineralmixturecanimprovecomprehensivepavementperformanceremarkably.Thecomp
6、rehensivepavementperformanceisclosetothatofSBSmodifiedasphaltmixturewith0.5一1.0mixingcontent(bymass),butitislimitedinimprovingthewatersensibilityofasphaltmixture.Therelationshipbe—tweenthedynamicstabilityofButonrockasphaltmixtureandrockmineralcontentOccursinconcavecurvecharacteris
7、tics,andtheinfluenceofrockminera1contentvariationsonthedynamicstabilityofasphaltmix—tureiSremarkable.Therawmateria1ofButonrockasphaltcannotbeaddedlntothematrixasphaltforcar-ryingoutMarshalltesttodeterminetherawmaterialcontentasSBSmodifier.TheparticularityofButonrockasphaltmaterial
8、shouldbeconsideredduringthemixdes