ASTM D3142 D3142M-2017 Standard Test Method for Specific Gravity API Gravity or Density of Cutback Asphalts by Hydrometer Method《用比重计法测定稀释沥青比重、API比重或密度的标准试验方法》.pdf
《ASTM D3142 D3142M-2017 Standard Test Method for Specific Gravity API Gravity or Density of Cutback Asphalts by Hydrometer Method《用比重计法测定稀释沥青比重、API比重或密度的标准试验方法》.pdf》由会员分享,可在线阅读,更多相关《ASTM D3142 D3142M-2017 Standard Test Method for Specific Gravity API Gravity or Density of Cutback Asphalts by Hydrometer Method《用比重计法测定稀释沥青比重、API比重或密度的标准试验方法》.pdf(6页珍藏版)》请在麦多课文档分享上搜索。
1、Designation: D3142/D3142M 11D3142/D3142M 17Standard Test Method forSpecific Gravity, API Gravity, or Density of Cutback Asphaltsby Hydrometer Method1This standard is issued under the fixed designation D3142/D3142M; the number immediately following the designation indicates theyear of original adopti
2、on or, in the case of revision, the year of last revision. A number in parentheses indicates the year of lastreapproval. A superscript epsilon () indicates an editorial change since the last revision or reapproval.1. Scope1.1 This test method covers the laboratory determination, using a glass hydrom
3、eter, of the density, specific gravity, or APIgravity of cutback asphalts as defined in Specifications D2026, D2027, and D2028 (Note 1). Values are measured on a hydrometerat convenient temperatures, readings of density, specific gravity, and API gravity being reduced to 15C15 C or 60F60 F bymeans o
4、f international standard tables. By means of these same tables, values determined in one of the three systems ofmeasurement are convertible to equivalent values in either system so that measurements may be made in the units of localconvenience.NOTE 1This test method is applicable to cutback asphalts
5、 and in general follows, but provides more explicit routines than, the procedure outlinedin Test Method D1298.1.2 UnitsThe values stated in either SI units or inch-pound units are to be regarded separately as standard. The values statedin each system may not be exact equivalents; therefore, each sys
6、tem shall be used independently of the other. Combining valuesfrom the two systems may result in nonconformance with the standard.1.3 This standard does not purport to address all of the safety concerns, if any, associated with its use. It is the responsibilityof the user of this standard to establi
7、sh appropriate safety safety, health, and healthenvironmental practices and determine theapplicability of regulatory limitations prior to use. Specific precautionary statements are given in Section 7.1.4 This international standard was developed in accordance with internationally recognized principl
8、es on standardizationestablished in the Decision on Principles for the Development of International Standards, Guides and Recommendations issuedby the World Trade Organization Technical Barriers to Trade (TBT) Committee.2. Referenced Documents2.1 ASTM Standards:2C670 Practice for Preparing Precision
9、 and Bias Statements for Test Methods for Construction MaterialsD140 Practice for Sampling Bituminous MaterialsD1250 Guide for Use of the Petroleum Measurement TablesD1298 Test Method for Density, Relative Density, or API Gravity of Crude Petroleum and Liquid Petroleum Products byHydrometer MethodD2
10、026 Specification for Cutback Asphalt (Slow-Curing Type)D2027 Specification for Cutback Asphalt (Medium-Curing Type)D2028 Specification for Cutback Asphalt (Rapid-Curing Type)E1 Specification for ASTM Liquid-in-Glass ThermometersE100 Specification for ASTM HydrometersE220 Test Method for Calibration
11、 of Thermocouples By Comparison Techniques3. Terminology3.1 Definitions of Terms Specific to This Standard:3.1.1 API gravitya function of specific gravity 15/15C 60/60F,15/15 C 60/60 F, represented by the equation:1 This test method is under the jurisdiction of ASTM Committee D04 on Road and Paving
12、Materials and is the direct responsibility of Subcommittee D04.47 onMiscellaneous Asphalt Tests.Current edition approved Dec. 15, 2011Dec. 15, 2017. Published January 2012January 2018. Originally approved in 1972. Last previous edition approved in 20052011as D3142 05.D3142/D3142M 11. DOI: 10.1520/D3
13、142/D3142M-11.10.1520/D3142/D3142M-17.2 For referencedASTM standards, visit theASTM website, www.astm.org, or contactASTM Customer Service at serviceastm.org. For Annual Book of ASTM Standardsvolume information, refer to the standards Document Summary page on the ASTM website.This document is not an
14、 ASTM standard and is intended only to provide the user of an ASTM standard an indication of what changes have been made to the previous version. Becauseit may not be technically possible to adequately depict all changes accurately, ASTM recommends that users consult prior editions as appropriate. I
15、n all cases only the current versionof the standard as published by ASTM is to be considered the official document.Copyright ASTM International, 100 Barr Harbor Drive, PO Box C700, West Conshohocken, PA 19428-2959. United States1API5141.5/SG 15/15C#2131.5 orAPI5141.5/SG 60/60F#2131.5No statement of
16、reference temperature is required since 15C 60F15 C 60 F is included in the definition.3.1.2 densityThethe mass of material per unit volume. When reporting results, explicitly state the density in units of mass(kilograms) and volume (litres), together with the standard reference temperature.3.1.3 ob
17、served valuesvalues observed at temperatures other than the standard reference temperature. Values observed at othertemperatures are only hydrometer readings, and not density, relative density (specific gravity), or API gravity.3.1.4 specific gravityThethe ratio of mass of a given volume of a materi
18、al at a specified temperature to the mass of an equalvolume of pure water measured at the reference temperature. When reporting results, the standard reference temperature must bestated.4. Summary of Test Method4.1 The sample is brought to the testing temperature and transferred to a hydrometer cyli
19、nder at approximately the sametemperature. The cylinder and its contents are placed in a constant-temperature bath to avoid excessive temperature variationduring the test. The appropriate hydrometer is lowered into the sample and allowed to settle. After temperature equilibrium, thehydrometer is rea
20、d and the temperature of the sample is noted.4.2 The hydrometer reading is corrected to either 15C15 C or 60F60 F by referring to standard tables.5. Significance and Use5.1 Accurate determination of the density, specific gravity, or API gravity of cutback asphalts is necessary for the conversionof m
21、easured volumes to volumes at the standard temperature of 15C15 C or 60F.60 F.5.2 Similarly, accurate determination is necessary for converting volumes to mass as required in other ASTM tests on cutbackasphalts.5.3 Values corrected to 15C15 C and 60F60 F will be different because the two temperature
22、s are not equal.6. Apparatus6.1 Hydrometers, glass, graduated in units of specific gravity, API gravity, or density as required, as listed in Table 1 and inaccordance with Specification E100.6.2 ThermometersThermometric DeviceA calibrated ASTM Gravity Thermometer, having a range of 20 to 102C or 5to
23、 215F and conforming to the requirements for Thermometer 12C or 12F, respectively, liquid-in-glass, total-immersionthermometer of suitable range with graduations at least every 0.2 C 0.5 F and a maximum scale error of 0.15 C 0.25 F asprescribed in Specification E1, or an equivalent thermometric devi
24、ce that has been calibrated in accordance with Test Method .Thermometer commonly used is 12C (12F). Any other thermometric device of equal accuracy may be used. E220. If athermohydrometer is used, the temperature scale shall have a range from 20 to 65C65 C or 60 to 220F220 F (Designation H).6.3 Hydr
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