1、Designation: D1865/D1865M 09 (Reapproved 2017)Standard Test Method forHardness of Mineral Aggregate Used on Built-Up Roofs1This standard is issued under the fixed designation D1865/D1865M; the number immediately following the designation indicates theyear of original adoption or, in the case of revi
2、sion, 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 determination of hardness ofall types of mineral surfacing for use on bu
3、ilt-up roofs and isintended to provide an index of their ability to withstandphysical breakdown in handling.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
4、 be used independently of 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-p
5、riate safety and health practices and determine the applica-bility of regulatory limitations prior to use.2. Referenced Documents2.1 ASTM Standards:2D75/D75M Practice for Sampling AggregatesD451/D451M Test Method for Sieve Analysis of GranularMineral Surfacing For Asphalt Roofing ProductsE11 Specifi
6、cation for Woven Wire Test Sieve Cloth and TestSieves3. Summary of Test Method3.1 Mineral aggregate is empirically evaluated for degree ofbreakdown into smaller pieces. The procedure calls for asample, free of fines, to be dropped a nominal distance of 1.2 m4 ft 400 times while inside a standardized
7、 test apparatus.4. Significance and Use4.1 This test method measures the resistance to physicalbreakdown in handling of built-up roofing aggregates.5. Apparatus5.1 A 1.2-m 4-ft length of clean 50-mm 2-in. iron pipefitted with a removable screw cap on both ends, and mountedon a suitable stand so that
8、 it can be rotated about an axisperpendicular to the long dimension of the pipe.5.2 Balance, 500-g 1 lb capacity, sensitive to 0.01 % of thecapacity.5.3 Sample Splitter, riffle-type.5.4 SievesA series of square-opening sieves, 8 in. indiameter, conforming to the requirements prescribed in Speci-fica
9、tion E11 and consisting of the following:Sieve Designation9.5-mm 38 in. 6.3-mm 14 in.3.35-mm No. 6 A solid collecting pan shall be fitted to the bottom of thestack of sieves.5.5 Mechanical Sieve Shaker, conforming to the require-ments prescribed in Test Method D451/D451M.6. Sampling6.1 Sample aggreg
10、ates received in bulk in accordance withPractice D75/D75M.6.2 For aggregates received in bags or small containers,select a number of bags or small containers at randomequivalent to the cube root of the total number in the shipment.7. Procedure7.1 Fractionate the aggregate, previously dried at 110C23
11、0F utilizing the riffle-type sample splitter, until a fractionis obtained that will permit the recovery, after hand sieving, ofabout 227 g 0.5-lb of aggregate passing through the 9.5-mm38-in. sieve and retained on the 6.3-mm 14-in. sieve.7.2 Place the 9.5-mm 38-in. and 6.3-mm 14-in. sievescontaining
12、 the 227 g 0.5-lb sample on the mechanical sieveshaker and agitate for 10 min to ensure complete removal ofthe finer materials.7.3 Weigh out 200 g 0.44 lb of the aggregate retained onthe 6.3-mm 14-in. sieve and place inside the 50-mm 2-in.pipe tester. Screw the caps tightly in place. Beginning with
13、thepipe in a substantially vertical position, rotate the pipe in an arcof 180, reverse direction, and repeat this action by turning1This test method is under the jurisdiction ofASTM Committee D08 on Roofingand Waterproofing and is the direct responsibility of Subcommittee D08.03 onSurfacing and Bitu
14、minous Materials for Membrane Waterproofing and Built-upRoofing.Current edition approved Jan. 1, 2017. Published January 2017. Originallyapproved in 1961. Last previous edition approved in 2009 as D1865/D1865M 09.DOI: 10.1520/D1865_D1865M-09R17.2For referenced ASTM standards, visit the ASTM website,
15、 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.Copyright ASTM International, 100 Barr Harbor Drive, PO Box C700, West Conshohocken, PA 19428-2959. United StatesThi
16、s international standard was developed 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 (T
17、BT) Committee.1end-for-end 200 complete revolutions (400 half turns), control-ling the rate of travel so that the aggregate drops cleanlywithout sliding.7.4 At the end of the test, unscrew the top cap, turn the pipeover, and empty the contents onto a nest consisting of the6.3-mm 14-in. and No. 6 3.3
18、5-mm sieves and the pan. Tapthe tube sharply to remove all of the sample. Place the nest ofsieves in the mechanical sieve shaker and run for 5 min.Carefully weigh the portion of the sample retained on each ofthe sieves and on the pan to an accuracy of 2 0.1 g 104-lb.8. Report8.1 Record the percentag
19、e retained on each sieve and in thepan to the nearest 0.1 % on the basis of the original sampleweight.8.2 Report the breakdown of the mineral surfacing as thepercentage passing the No. 6 3.35-mm sieve, on the basis ofthe original sample weight.9. Precision and Bias9.1 The following data should be us
20、ed for judging theacceptability of results (95 % probability) on samples from thesame lot from the same supplier.9.1.1 Duplicate results by the same operator should not beconsidered suspect unless they differ by more than the follow-ing amount:Breakdown Range, % Repeatability, percentage points0to15
21、 59.1.2 The results submitted by each of two laboratoriesshould not be considered suspect unless they differ by morethan the following amount:Breakdown Range, % Reproducibility, percentage points0to25 109.2 BiasThe procedure in Test Method D1865/D1865Mfor measuring the hardness of mineral aggregate
22、has no biasbecause the value obtained can be defined only in terms of thetest method.10. Keywords10.1 aggregate fiber; built-up roofs; mineral aggregate;sieve analysisASTM International takes no position respecting the validity of any patent rights asserted in connection with any item mentionedin th
23、is standard. Users of this standard are expressly advised that determination of the validity of any such patent rights, and the riskof infringement of such rights, are entirely their own responsibility.This standard is subject to revision at any time by the responsible technical committee and must b
24、e reviewed every five years andif not revised, either reapproved or withdrawn. Your comments are invited either for revision of this standard or for additional standardsand should be addressed to ASTM International Headquarters. Your comments will receive careful consideration at a meeting of theres
25、ponsible technical committee, which you may attend. If you feel that your comments have not received a fair hearing you shouldmake your views 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, W
26、est 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 Copyright Clearance Center, 222Rosewood Drive, Danvers, MA 01923, Tel: (978) 646-2600; http:/ 09 (2017)2
