不同老化條件下粉煤灰瀝青混合料路用性能評價(jià)

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關(guān)鍵詞：道路工程；瀝青混合料；粉煤灰；老化；路用性能

中圖分類號：U415 文獻(xiàn)標(biāo)志碼：A 文章編號：1005-8249（2025）02-0156-05

DOI：10.19860/j.cnki.issn1005-8249.2025.02.026

Abstract：Inordertostudytheinfluenceofflyashontheperformanceofasphalt mixtureunderdiferentagingconditions，four blendingratios wereformulatedby partiallreplacing mineral powder withflyash，andthree agingconditions were designed. The high temperature rutting test at ，the beam bending test at ，the immersion Marshall test and the freeze-thaw spliting estwereusedtosystematicallevaluatetheroad performanceof asphaltmixture with diferentflyash-slagratio.The resultsshowthat thehigh temperature performance and waterstabilityof asphalt mixturecanbeimprovedbypartiallading fly ash.There isanoptimaldosagerange，andtherearediferences intheoptimaldosagerangeofdiferent properties.Flyashwil haveanadverseefectonthelowtemperatureperformanceof asphaltmixture，andthegreaterthecontent，themoresignificant the fect.The greaterthedegreeof aging，theroad performanceof asphalt mixtureissignificantlyreduced.Whenusingflyash to improve theperformanceofasphaltmixture，thecontentoflyashshouldbedeterminedcomprehensivelyacording totheroad performance.The research findings provide a reference for the application of flyash in asphalt pavement.

Key words： road engineering； asphalt mixture; fly ash; aging; road performance

0 引言

瀝青路面以其良好的行車舒適性、養(yǎng)護(hù)便利性及噪音小等優(yōu)點(diǎn)，逐漸成為了高等級公路的首選路面形式[1]。（剩余5173字）