1、Designation: D1864/D1864M 89 (Reapproved 2009)1Standard Test Method forMoisture in Mineral Aggregate Used on Built-Up Roofs1This standard is issued under the fixed designation D1864/D1864M; the number immediately following the designation indicates theyear of original adoption or, in the case of rev
2、ision, 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.This standard has been approved for use by agencies of the Department of Defense.1. Scope1.1 This test method c
3、overs the determination of moisturein mineral aggregate for use on built-up roofs.1.2 The values stated in either SI units or inch-pound unitsare to be regarded separately as standard. The values stated ineach system may not be exact equivalents; therefore, eachsystem shall be used independently of
4、the other. Combiningvalues from the two systems may result in non-conformancewith the standard.1.3 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 safety and health pr
5、actices and determine the applica-bility of regulatory limitations prior to use.2. Referenced Documents2.1 ASTM Standards:2D75 Practice for Sampling AggregatesD1863 Specification for Mineral Aggregate Used onBuilt-Up Roofs3. Summary of Test Method3.1 The aggregate is dried to constant mass in a 110C
6、230F oven. The mass percent moisture is calculated as theloss in mass based on the mass of the oven dry aggregate.4. Significance and Use4.1 This test method measures the moisture in mineralaggregate required by Specification D1863.5. Apparatus5.1 Balance, 1000-g 2.2-lb capacity, sensitive to 0.01 %
7、 ofthe capacity.5.2 Oven, large enough to hold the sample and capable ofmaintaining a temperature of 110C 230F 6 1%.5.3 Sample Container, consisting of an evaporating dish orsimilar shallow container.6. Sampling6.1 Sample aggregates received in bulk in accordance withPractice D75.6.2 For aggregates
8、received in bags or small containers,select a number of bags or small containers at random,equivalent to the cube root of the total number in the shipment.7. Procedure7.1 Transfer to a tared dish 500 g 1 lb 6 1 % of theaggregate, weighed to the nearest 2 3 0.1 g 104-lb. Place inan oven at 110C 230F
9、for 4 h. Cool in a desiccator. Weighto the nearest 2 3 0.1 g 104-lb. Repeat the drying for 1-hperiods until constant mass is obtained.8. Calculation8.1 Calculate the percentage of moisture as follows:Moisture, % 5 B 2 C!/C 2 A!# 3 100 (1)where:A = mass of container,B = original mass of sample and co
10、ntainer, andC = mass of sample and container after drying.9. Precision and Bias9.1 The following data should be used for judging theacceptability of results (95 % probability) on samples from thesame lot from the same supplier:9.1.1 RepeatabilityDuplicate results by the same operatorshould not be co
11、nsidered suspect unless they differ by morethan the following amount:Moisture Content, % Repeatability, percentage points0to5 60.51This test method is under the jurisdiction ofASTM Committee D08 on Roofingand Waterproofing and is the direct responsibility of Subcommittee D08.03 onSurfacing and Bitum
12、inous Materials for Membrane Waterproofing and Built-upRoofing.Current edition approved Dec. 1, 2009. Published December 2009. Originallyapproved in 1976. Last previous edition approved in 2002 as D1864 89(2002).DOI: 10.1520/D1864_D1864M-89R09E01.2For referenced ASTM standards, visit the ASTM websit
13、e, www.astm.org, orcontact ASTM Customer Service at serviceastm.org. For Annual Book of ASTMStandards volume information, refer to the standards Document Summary page onthe ASTM website.1Copyright ASTM International, 100 Barr Harbor Drive, PO Box C700, West Conshohocken, PA 19428-2959, United States
14、.9.1.2 ReproducibilityThe results submitted by each oftwo laboratories should not be considered suspect unless theydiffer by more than the following amount:Moisture Content, % Reproducibility, percentage points0to5 61.09.2 BiasThere is no bias known in this test method.10. Keywords10.1 built-up roof
15、s; mineral aggregate; moistureASTM International takes no position respecting the validity of any patent rights asserted in connection with any item mentionedin this standard. Users of this standard are expressly advised that determination of the validity of any such patent rights, and the riskof in
16、fringement of such rights, are entirely their own responsibility.This standard is subject to revision at any time by the responsible technical committee and must be reviewed every five years andif not revised, either reapproved or withdrawn. Your comments are invited either for revision of this stan
17、dard or for additional standardsand should be addressed to ASTM International Headquarters. Your comments will receive careful consideration at a meeting of theresponsible technical committee, which you may attend. If you feel that your comments have not received a fair hearing you shouldmake your v
18、iews known to the ASTM Committee on Standards, at the address shown below.This standard is copyrighted by ASTM International, 100 Barr Harbor Drive, PO Box C700, West Conshohocken, PA 19428-2959,United States. Individual reprints (single or multiple copies) of this standard may be obtained by contacting ASTM at the aboveaddress or at 610-832-9585 (phone), 610-832-9555 (fax), or serviceastm.org (e-mail); or through the ASTM website(www.astm.org). Permission rights to photocopy the standard may also be secured from the ASTM website (www.astm.org/COPYRIGHT/).D1864/D1864M 89 (2009)12
