ASTM D6433-2018 4375 Standard Practice for Roads and Parking Lots Pavement Condition Index Surveys《测量道路和停车场路面条件系数的标准实施规程》.pdf
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1、Designation: D6433 18Standard Practice forRoads and Parking Lots Pavement Condition IndexSurveys1This standard is issued under the fixed designation D6433; the number immediately following the designation indicates the year oforiginal adoption or, in the case of revision, the year of last revision.
2、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 covers the determination of roads andparking lots pavement condition through visual surveys usingthe pavement condition
3、 Index (PCI) method of quantifyingpavement condition.1.2 The PCI for roads and parking lots was developed by theU.S. Army Corps of Engineers (1, 2).2It is further verified andadopted by DOD and APWA.1.3 The values stated in SI units are to be regarded asstandard. The values given in parentheses are
4、mathematicalconversions to inch-pound units that are provided for informa-tion only and are not considered standard.1.4 This standard does not purport to address all of thesafety concerns, if any, associated with its use. It is theresponsibility of the user of this standard to establish appro-priate
5、 safety, health, and environmental practices and deter-mine the applicability of regulatory limitations prior to use.Specific precautionary statements are given in Section 6.1.5 This international standard was developed in accor-dance with internationally recognized principles on standard-ization es
6、tablished in the Decision on Principles for theDevelopment of International Standards, Guides and Recom-mendations issued by the World Trade Organization TechnicalBarriers to Trade (TBT) Committee.2. Terminology2.1 Definitions of Terms Specific to This Standard:2.1.1 additional samplea sample unit i
7、nspected in addi-tion to the random sample units to include nonrepresentativesample units in the determination of the pavement condition.This includes very poor or excellent samples that are nottypical of the section and sample units, which contain anunusual distress such as a utility cut. If a samp
8、le unitcontaining an unusual distress is chosen at random it should becounted as an additional sample unit and another randomsample unit should be chosen. If every sample unit is surveyed,then there are no additional sample units.2.1.2 asphalt concrete (AC) surfaceaggregate mixturewith an asphalt ce
9、ment binder. This term also refers to surfacesconstructed of coal tars and natural tars for purposes of thispractice.2.1.3 pavement brancha 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
10、 branch.2.1.4 pavement condition index (PCI)a numerical ratingof the pavement condition that ranges from 0 to 100 with 0being the worst possible condition and 100 being the bestpossible condition.2.1.5 pavement condition ratinga verbal description ofpavement condition as a function of the PCI value
11、that variesfrom “failed” to “excellent” as shown in Fig. 1.2.1.6 pavement distressexternal indicators of pavementdeterioration caused by loading, environmental factors, con-struction deficiencies, or a combination thereof. Typical dis-tresses are cracks, rutting, and weathering of the pavementsurfac
12、e. Distress types and severity levels detailed in AppendixX1 forAC, and Appendix X2 for PCC pavements must be usedto obtain an accurate PCI value.2.1.7 pavement sample unita subdivision of a pavementsection that has a standard size range: 20 contiguous slabs (68slabs if the total number of slabs in
13、the section is not evenlydivided by 20 or to accommodate specific field condition) forPCC pavement, and 225 6 90 m2(2500 contiguous square feet6 1000 ft2), if the pavement is not evenly divided by 225 m2or 2500 ft to accommodate specific field condition, for ACpavement.2.1.8 pavement sectiona contig
14、uous pavement area hav-ing uniform construction, maintenance, usage history, andcondition. A section should have the same traffic volume andload intensity.2.1.9 portland cement concrete (PCC) pavementaggregate mixture with portland cement binder includingnonreinforced and reinforced jointed pavement
15、.1This 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 Jan. 1, 2018. Published January 2018. Originallyapproved in 1999. Last previous edition a
16、pproved in 2016 as D6433 16. DOI:10.1520/D6433-18.2The boldface numbers in parentheses refer to the list of references at the end ofthis standard.Copyright ASTM International, 100 Barr Harbor Drive, PO Box C700, West Conshohocken, PA 19428-2959. United StatesThis international standard was developed
17、 in accordance with internationally recognized principles on standardization established in the Decision on Principles for theDevelopment of International Standards, Guides and Recommendations issued by the World Trade Organization Technical Barriers to Trade (TBT) Committee.12.1.10 random samplea s
18、ample unit of the pavementsection selected for inspection by random sampling techniques,such as a random number table or systematic random proce-dure.3. Summary of Practice3.1 The pavement is divided into branches that are dividedinto sections. Each section is divided into sample units. Thetype and
19、severity of pavement distress is assessed by visualinspection of the pavement sample units. The quantity of thedistress is measured as described in Appendix X1 andAppendix X2. The distress data are used to calculate the PCIfor each sample unit. The PCI of the pavement section isdetermined based on t
20、he PCI of the inspected sample unitswithin the section.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 a
21、lso indicatesthe structural integrity and surface operational condition (lo-calized roughness and safety). The PCI cannot measure struc-tural capacity, nor does it provide direct measurement of skidresistance or roughness. It provides an objective and rationalbasis for determining maintenance and re
22、pair needs andpriorities. Continuous monitoring of the PCI is used to estab-lish the rate of pavement deterioration, which permits earlyidentification of major rehabilitation needs. The PCI providesfeedback on pavement performance for validation or improve-ment of current pavement design and mainten
23、ance procedures.5. Apparatus5.1 Data Sheets, or other field recording instruments thatrecord at a minimum the following information: date, location,branch, section, sample unit size, slab number and size, distresstypes, severity levels, quantities, and names of surveyors.Example data sheets for AC a
24、nd PCC pavements are shown inFigs. 2 and 3.5.2 Hand Odometer Wheel, that reads to the nearest 30 mm(0.1 ft).5.3 Straightedge or String Line, (AC only), 3 m (10 ft).5.4 Scale, 300 mm (12 in.) that reads to 3 mm (18 in.) orbetter. Additional 300-mm (12-in.) ruler or straightedge isneeded to measure fa
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