玄武巖纖維改性瀝青混合料路用性能試驗研究(更新版)
【正文】 sandfoundthatbasaltfibercouldimprove.gatedthemechanicalpropertiesoftheshort—cutbasaltfiber——Received2O1006—29.Biographies:FanWenxiao(1968一),male,graduate。Slistheimmersedstabilityofspecimens.placedinatankataconstanttemperatureof25℃nolessthan2h,andthenthemaximumfailingloadPismeas.—l8℃f0r16hinarefrigeratorafterhavingbeenputintoatankataconstanttemperatureof60℃for24hbeforebe—ingplacedina25℃constanttemperaturetanknolessthan,themaximumfailingloadP12andthesplittingstrengtharecalculatedby(2)(3)whereRTlisthesplittingstrengthwithoutfreeze—thawandRT2thefreeze—thawsplittingstrength,MPa。sRepublic—2004Standardspecificationforconstruc—tionandacceptanceofhighwayasphaltpavements[S].Bei—jing:ChinaCommunicationsPress,2000.(inChinese)玄武巖纖維改性瀝青混合料路用性能試驗研究范文孝康海貴鄭元勛(.大連理工大學(xué)海岸和近海工程國家重點實驗室,大連116023)(鄭州大學(xué)水利與環(huán)境學(xué)院,鄭州450052)摘要:為研究玄武巖纖維在增強瀝青混合料路用性能方面的作用,首先通過馬歇爾試驗與車轍試驗確定最佳瀝,%,%.然后通過高溫穩(wěn)定性試驗,水穩(wěn)性試驗及低溫抗裂性試驗對不添加纖維,添加玄武巖纖維,添加聚酯纖維以及添加木質(zhì)纖維情況下的,相對無纖維增強瀝青混合料,纖維瀝青混合料提高了最佳瀝青用量,其車轍動穩(wěn)定度,凍融劈裂強度,低溫抗裂強度等均得到了一定提高與優(yōu)化。玄武巖纖維。threefibermodifiedasphaltmixturesallmeettherequire—merits….Comparedwithpolyesterfiberandxylogenfiber,theimprovementoftheMarshallstabilityandtheimmersed—%.%%.andtheresidualstabilitiesareincreasedby%.%%.respectively.Themainreasonsarethattheadditionoffibersincreasesthedosageofasphaltinthemixture,whichimprovestheeffectivefilmthicknessofmineralmaterialsandeffectivelyre—ducesthepossibilityofwaterbetweentheasphaltinterfaceandthemineralaggregate。Soptimumpositionisobtainedasaparisongroup,andthenvariousfibersareputintotheasphaltmixturesinacertainintervalofdosage。basaltfiber。thetraditiona1densegradationasphaltmixtureisakindofsuspensiondenseframework,andthedensityoftheframeworkstructureisal—waysinadequate?！猽alstability,andtheTSRofthebasaltt5bermodifiedas.%.%.%and%.respectively。路用性能中圖分類號:U414
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