ASTM_E_2840_-_11.pdf

Designation:E284011Standard Practice forPavement Condition Index Surveys for InterlockingConcrete Roads and Parking Lots1This standard is issued under the fixed designation E2840;the number immediately following the designation indicates the year oforiginal adoption or,in the case of revision,the year of last revision.A number in parentheses indicates the year of last reapproval.Asuperscript epsilon()indicates an editorial change since the last revision or reapproval.1.Scope1.1 This practice is used to assess the condition of roads andparking lots surfaced with interlocking concrete pavementthrough visual surveys using the Pavement Condition Index(PCI)method of quantifying pavement condition.1.2 The PCI for roads and parking lots was developed by theU.S.Army Corps of Engineers(1,2).It is further verified andadopted by DOD and APWA.This standard is an adaptation ofthe PCI method for interlocking concrete pavements.1.3 The values stated in inch-pound units are to be regardedas standard.The values given in parentheses are mathematicalconversions to SI units that are provided for information onlyand are not considered standard.2.Terminology2.1 Definitions of Terms Specific to This Standard:2.1.1 additional sample,na sample unit inspected inaddition to the random sample units to include non represen-tative sample units in the determination of pavement conditionindex.This includes very poor or excellent samples that are nottypical of the section and sample units.If a sample unitcontaining an unusual distress is chosen at random,it should becounted as an additional sample and another random sampleunit should be chosen.If all sample units are inspected,thenthere are no additional samples.2.1.2 interlocking concrete pavement,ndiscrete,hand-sized paving units with rectangular or dentated shapes manu-factured from concrete and conforming toASTM C 936.Eithertype of unit shape is placed in an interlocking pattern withvarious jointing and bedding materials over an unbound orbound base layer.2.1.3 pavement branch,na branch is an identifiable part ofthe pavement network that is a single entity and has a distinctfunction.For example,each roadway or parking area is aseparate branch of a pavement network.2.1.4 pavement condition index(PCI),na numerical rat-ing of the pavement condition that ranges from 0 to 100 with0 being the worst possible condition and 100 being the bestpossible condition.2.1.5 pavement condition rating,na verbal description ofpavement condition as a function of the PCI value that variesfrom“failed”to“excellent”as shown in Fig.1.2.1.6 pavement distress,nexternal indicators of pavementdeterioration caused by loading,environmental factors,con-struction deficiencies,or a combination thereof.Typical dis-tresses include depressions,damaged pavers,horizontal creepand faulting.Distress types and severity levels detailed inAppendix X1 must be used to obtain an accurate PCI value.2.1.7 pavement sample unit,na sample unit is a subdivi-sion of the pavement section.Each pavement section is dividedinto sample units for the purpose of pavement inspection.Thesample units for inspection shall be 2500 ft26 1000 ft2(225m26 90 m2).2.1.8 pavement section,na contiguous pavement areahaving uniform construction,maintenance,usage history,andcondition.A section should have the same traffic volume andload intensity.2.1.9 random sample,na sample unit of the pavementsection selected for inspection by random sampling techniques.3.Summary of Practice3.1 The pavement is divided into branches that are thendivided into sections.Each section is divided into sample units.The type and severity of pavement distress is assessed byvisual inspection of the pavement sample units.The quantity ofdistress is measured as described in Appendix X1 and Appen-dix X2.The distress data is used to calculate the PCI for eachsample unit.The PCI of a pavement section is determinedbased on the PCI of the inspected sample units within thesection.4.Significance and Use4.1 The PCI is a numerical indicator that rates the surfacecondition of the pavement.The PCI provides a measure of thepresent condition of the pavement based on the distressobserved on the surface of the pavement,which also indicates1This practice is under the jurisdiction of ASTM Committee E17 on Vehicle-Pavement Systems and is the direct responsibility of Subcommittee E17.42 onPavement Management and Data Needs.Current edition approved Sept.1,2011.Published December 2011.DOI:10.1520/E284011Copyright ASTM International,100 Barr Harbor Drive,PO Box C700,West Conshohocken,PA 19428-2959.United States1 the structural integrity and surface operational condition(lo-calized roughness and safety).The PCI does not measurestructural capacity nor does it provide direct measurement ofskid resistance or roughness.It provides an objective andrational basis for determining maintenance and repair needsand priorities.Regular monitoring of the PCI is used toestablish the rate of pavement deterioration,which permitse