欢迎来到天天文库
浏览记录
ID:53270828
大小:248.01 KB
页数:4页
时间:2020-04-17
《APP油毡用于旧水泥路面沥青加铺层间防裂.pdf》由会员上传分享,免费在线阅读,更多相关内容在应用文档-天天文库。
1、第34卷第4期武汉理工大学学报Vo1.34No.42012年4月JOURNALOFWIJUNIVERSITYOFTECHNOLOGYApr.2012DOI:10.3963/j.issn.1671—4431.2012.04.012APP油毡用于旧水泥路面沥青加铺层间防裂袁玉卿,高丹盈,王选仓。(1.河南大学土木建筑学院,开封475004;2.郑州大学新型建材与结构研究中心,郑州450002;3.长安大学公路学院,西安710064)摘要:在全面分析APP油毡工程特性的基础上进行了理论分析、工程实践、直剪及拉拔试验。建立了旧水泥路面沥青加铺层间用APP油毡防裂的有限元模
2、型,对最不利点位受力进行了计算;对车辆荷载、温度荷载及其耦合作用下的情形分别进行了计算,认为APP油毡拉伸模量为1000MPa时防裂的综合效果最好;提取试验路芯样,进行了直剪试验,表明APP油毡具有良好的层间工作性能,有油毡夹层的芯样施力4500N发生剪切破坏,层间位移为5.0mm,超过了没有油毡夹层时的破坏位移0.5mm;层间拉拔试验数据显示有油毡夹层芯样抗拉拔力为10000N,比没有油毡的抗拉拔力多了6000N。关键词:道路工程;沥青加铺层;APP改性沥青油毡;反射裂缝中图分类号:U416.2文献标识码:A文章编号:1671—4431(2012)04—0048
3、—04PreventingCrackingModifiedBituminousLinoleumasInterlayerBetweenOldCementConcretePavementandAsphaltOverlayYUANYu—qing。GAODan—ying。。WANGXuan—cang。(1.SchoolofCivilEngineeringandArchitecture,HenanUniversity,Kaifeng475004,China;2.ResearchCenterofNewStyleBuildingMaterialandStructure,Zhen
4、gzhouUniversity,Zhengzhou450002,China;3.SchoolofHighway,Chang’anUniversity,Xi’an710064,China)Abstract:BasedonwidelyanalyzingtheengineeringcharacteristicofAPPmodifiedbituminouslinoleum,someresear—cheswereperformed,includingtheoriesanalysis,engineeringpractice,testofdirectshearingandpul
5、lout.Bydintofes—tablishingthefiniteelementmechanicalanalysismodel,thestressesatthedangerouspositionwascomputed.TheresultsshowedthatitcouldefficientlypreventcrackingwhentheelasticityofAPPmodifiedbituminouslinoleumarrivedat1000MPa,whichweregainedundertheloadsofvehicle,temperatureandcoup
6、lingofthem.Afterdirectshearingtestwiththedrillingsamplesfromfieldtestroad,itwasfoundthattheAPPmodifiedbituminouslinoleumhasperfectinterlayerwork—ingbehavior,whichindicatedthatthesampleswouldbeshearedtodestroy,withinterlayerdisplacementof5.0mm,0.5mmmorethanthatwithoutthespecificinterla
7、yer,whentheloadsreaching4500N.Fromthedataofpullouttest,itwasconcludedthatthedestructivestresswas10000NwithAPPmodifiedbituminouslinoleum,6000Nmorethantheotherstructure.Keywords~roadengineering;asphaltoverlay;APPmodifiedbituminouslinoleum;anti—crackAPP改性沥青油毡(简称“APP油毡”),是以聚酯或玻纤为胎体,经氧化沥青轻
8、度浸渍后,
此文档下载收益归作者所有