Feasibility of Using 4th Power Law in Design of Plastic Deformation Resistant Low Volume Roads

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dc.authoridSaltan, Mehmet/0000-0001-6221-4918
dc.authoridGOKALP, Islam/0000-0003-3198-3508
dc.authoridUZ, Volkan Emre/0000-0002-9328-4756
dc.contributor.authorUz, Volkan Emre
dc.contributor.authorSaltan, Mehmet
dc.contributor.authorGokalp, Islam
dc.date.accessioned2025-01-06T17:36:03Z
dc.date.available2025-01-06T17:36:03Z
dc.date.issued2016
dc.description3rd International Conference on Transportation Geotechnics (ICTG) -- SEP, 2016 -- Guimaraes, PORTUGAL
dc.description.abstractA low volume road (LVR) structural design has two phases: first one is selection of appropriate construction materials and second is the determination of layer thicknesses under the certain traffic and environmental conditions with considering the subgrade bearing capacity. Pavements are prompted to serve the traffic without reaching the terminal serviceability index over its design life. Rut accumulation (plastic deformation) is the most common pavement deterioration type of flexible pavements. Therefore the main goal of the design is prevent rutting. Many low volume road design manual assume that plastic deformation occurs only in subgrade. Construction of overlying layers by selective high performance materials according to the related material and construction specifications is the reason of this assumption. In fact, the assumption is not much reasonable especially for with no, or thinly overlaid low volume road pavements, where the major structural strength is comprised of unbound granular pavement materials and where the principal distress mechanism is rutting in the aggregate layers. Subgrade bearing capacity and the traffic are the main input parameters in the design stage of low volume roads. Subgrade bearing capacity is expressed with California Bearing Ratio (CBR) or Resilient Modulus (Mr). The traffic term is determined by Equivalent Standard Axle Load (ESAL) repetitions which is often admitted as 80 kN single axle load. Although it is not too difficult to determine an axle load for an individual vehicle, it becomes quite complicated to determine the number and types of axle loads that a particular pavement will be subjected over its design life. For calculation of Load Damage Factors of different vehicle types, which have various axle load and configurations, a generalized fourth-power law has been used for more than a half century. The objective of this study is to indicate the limitations and difficulties faced on reliably applying a power law relationship in design of LVRs with no, or only thin seals. If a power law relationship to be used due to its simplicity, several parameters must be considered in selection of the power value. Such as stress dependent behavior of unbound granular materials and the selected distress type.
dc.description.sponsorshipUniv Minho,Portuguese Geotechn Soc,ISSMGE Tech Comm TC202 Transportat Geotechn
dc.identifier.doi10.1016/j.proeng.2016.06.084
dc.identifier.endpage970
dc.identifier.issn1877-7058
dc.identifier.scopus2-s2.0-84982924130
dc.identifier.scopusqualityN/A
dc.identifier.startpage961
dc.identifier.urihttps://doi.org/10.1016/j.proeng.2016.06.084
dc.identifier.urihttps://hdl.handle.net/20.500.14669/1724
dc.identifier.volume143
dc.identifier.wosWOS:000387502700116
dc.identifier.wosqualityN/A
dc.indekslendigikaynakWeb of Science
dc.indekslendigikaynakScopus
dc.language.isoen
dc.publisherElsevier Science Bv
dc.relation.ispartofAdvances in Transportation Geotechnics Iii
dc.relation.publicationcategoryKonferans Öğesi - Uluslararası - Kurum Öğretim Elemanı
dc.rightsinfo:eu-repo/semantics/openAccess
dc.snmzKA_20241211
dc.subject4th Power Law
dc.subjectPlastic Deformation
dc.subjectEquivalent Single Axle Load
dc.subjectGranular Pavement
dc.titleFeasibility of Using 4th Power Law in Design of Plastic Deformation Resistant Low Volume Roads
dc.typeConference Object

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