ASTM D692-2000(2004) Standard Specification for Coarse Aggregate for Bituminous Paving Mixtures《沥青铺路混合料用粗集料的标准规范》.pdf

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1、Designation: D 692 00 (Reapproved 2004)Standard Specification forCoarse Aggregate for Bituminous Paving Mixtures1This standard is issued under the fixed designation D 692; the number immediately following the designation indicates the year oforiginal adoption or, in the case of revision, the year of

2、 last revision. A number in parentheses indicates the year of last reapproval. Asuperscript epsilon (e) 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 specification covers crushed s

3、tone, crushedhydraulic-cement concrete, crushed blast-furnace slag, crushedgravel, crushed expanded shale, crushed expanded clay, andcrushed expanded slate suitable for use in bituminous pavingmixtures, as described in Specifications D 3515 or D 4215.NOTE 1Other slags having demonstrated a satisfact

4、ory service recordmay be used.1.2 The values stated in SI units are to be regarded asstandard. Inch-pound units, shown in parentheses, are forinformation only.1.3 The text of this standard references notes and footnoteswhich provide explanatory material. These notes and footnotes(excluding those in

5、tables and figures) shall not be consideredas requirements of the standard.2. Referenced Documents2.1 ASTM Standards:2C 29/C 29M Test Method for Bulk Density (Unit Weight)and Voids in AggregateC 88 Test Method for Soundness of Aggregates by Use ofSodium Sulfate or Magnesium SulfateC 125 Terminology

6、Relating to Concrete and ConcreteAggregatesC 131 Test Method for Resistance to Degradation of Small-Size Coarse Aggregate by Abrasion and Impact in the LosAngeles MachineC 136 Test Method for Sieve Analysis of Fine and CoarseAggregatesC 294 Descriptive Nomenclature of Constituents of Con-crete Aggre

7、gatesD 8 Terminology Relating to Materials for Roads and Pave-mentsD 75 Practice for Sampling AggregatesD 448 Classification for Sizes of Aggregate for Road andBridge ConstructionD 3319 Test Method for Accelerated Polishing of Aggre-gates Using the British WheelD 3515 Specification for Hot-Mixed, Ho

8、t-Laid BituminousPaving MixturesD 3665 Practice for Random Sampling of ConstructionMaterialsD 4215 Specification for Cold-Mixed, Cold-Laid Bitumi-nous Paving MixturesD 5821 Test Method for Determining the Percentage ofFractured Particles in Coarse Aggregate3. Terminology3.1 Definitions:3.1.1 For def

9、ining aggregate types, see Descriptive Nomen-clature C 294, and Terminology D 8 and C 125.3.1.2 expanded shale, n; expanded clay, n; expanded slate,nthe product resulting from the expanding of selectedmaterials (shale, clay, or slate) in a rotary kiln at temperaturesover 1000C.4. Ordering Informatio

10、n4.1 Orders for the material under this specification shallinclude the following information:4.1.1 The specification designation and year of issue.4.1.2 The size to be furnished (see 5.2).4.1.3 The quantity required.4.1.4 Use of the coarse aggregate, whether for conventionalmixtures or open-graded f

11、riction course mixtures (see 5.4), andwhether for surface courses or base courses (see 5.7),4.1.5 In the case of sulfate soundness tests (5.6), which saltis to be used.4.1.6 Any special requirements.1This specification is under the jurisdiction of ASTM Committee D04 on Roadand Paving Materials and i

12、s the direct responsibility of Subcommittee D04.50 onAggregate Specifications.Current edition approved June 1, 2004. Published June 2004. Originallyapproved in 1942. Last previous edition approved in 2000 as D 692 00.2For referenced ASTM standards, visit the ASTM website, www.astm.org, orcontact AST

13、M 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.5. Physical Requirements5.1 G

14、eneralThe coarse aggregate shall consist of hard,strong, durable pieces, free of coherent coatings and conform-ing to the requirements of this specification.5.2 Grading:5.2.1 The coarse aggregate grading shall conform to therequirements of Classification D 448 for the size numberdesignated, or to an

15、other grading as stated in the order (seeNote 2).NOTE 2The coarse aggregate grading to be furnished is dependentupon the desired composition of the paving mixture, and whether thegrading to be used in the mixture is achieved with or without blending.Other coarse aggregate gradings may be used provid

16、ed that the combinedaggregate and filler, when used, will produce a paving mixture thatprovides the desired characteristics.5.2.2 The size to be used is dependent upon the desiredcomposition of the paving mixture, and the required size orsizes either before or after blending as specified.5.3 Density

17、:5.3.1 SlagAir-cooled blast-furnace-slag coarse aggregate,when tested in size No. 57 or No. 8, shall have a minimumdensity of 1120 kg/m3(70 lb/ft3) as determined in accordancewith Test Method C 29/C 29M, rodding procedure.5.3.2 Expanded Shale, Expanded Clay, Expanded SlateThe coarse aggregate, when

18、tested in size No. 57 or No. 8, shallhave a minimum density of 500 kg/m3(31 lb/ft3) as determinedin accordance with Test Method C 29/C 29M, shoveling pro-cedure.5.4 Crushed Pieces in AggregateOrders for materialsunder this specification shall state the appropriate requirementsfor crushed pieces, Tes

19、t Method D 5821.5.4.1 Conventional MixturesNot less than 40 %, by mass,of the aggregate pieces retained on the 4.75-mm (No. 4) sieveshall have at least one fractured face (see Notes 3 and 4).5.4.2 Open Graded Friction Course MixturesOf the ag-gregate pieces retained on the 4.75-mm (No. 4) sieve, not

20、 lessthan 90 %, by mass, shall have one or more fractured faces and75 %, by mass, two or more fractured faces.NOTE 3Attention is called to the distinction between conventional(dense mixtures or open mixtures) and open-graded friction coursemixtures in Specification D 3515.NOTE 4Some sources of aggre

21、gate contain angular particles that willperform similarly to a mechanically crushed particle. Where laboratorytests or service records indicate this to be true, such angular particles maybe considered as crushed.5.5 Polishing CharacteristicsThe coarse aggregates, orthe coarsest fraction of the aggre

22、gate for use in surface coursemixtures, shall be of a type known to possess adequateresistance to the polishing action of the anticipated traffic. (seeNote 5)NOTE 5No standard ASTM method has been recognized to becapable of defining adequate resistance to the polishing action of specifictraffic cond

23、itions. Test Method D 3319 has been found useful in evaluatingthe relative polish resistance between samples of different aggregates ormixtures containing different aggregates.5.6 SoundnessThe coarse aggregate, when subjected tofive cycles of the soundness test, shall have a weighted loss notgreater

24、 than 12 % when sodium sulfate is used or 18 % whenmagnesium sulfate is used. (see Note 6). If the salt is notdesignated by the purchaser, the aggregate will be acceptable ifit meets the indicated limit for the salt used.5.7 DegradationThe aggregate (with the exception ofcrushed blast-furnace slag)

25、when subjected to testing in accor-dance with Test Method C 131 shall have a loss not greaterthan 40 % for surface courses or 50 % for base courses (seeNote 6).NOTE 6Coarse aggregate (other than crushed hydraulic-cement con-crete) failing to meet the requirements of 5.6 or 5.7, may be considered for

26、use provided that (a) similar aggregates from the same source or geologicformation have been shown by experience to result in satisfactorypavements and (b) the results of other tests suggest that the desiredperformance can be obtained. Aggregate from a new source (includingcrushed hydraulic-cement c

27、oncrete) that fails the requirements of 5.6 or5.7 and for which no experience exists, may be considered provided theresults of the other tests suggest that the desired performance can beobtained. Crushed hydraulic-cement concrete may chemically react withNa2SO4or MgSO4, giving higher results which m

28、ay not reflect theaggregates freeze-thaw properties. Additional tests may be required.6. Methods of Sampling and Testing6.1 Sample the aggregates and determine the propertiesenumerated in this specification in accordance with the follow-ing methods:6.1.1 SamplingPractice D 75 and Practice D 3665.6.1

29、.2 GradingTest Method C 136.6.1.3 Bulk Density of AggregateTest Method C 29/C 29M.6.1.4 SoundnessTest Method C 88.6.1.5 DegradationTest Method C 131.7. Keywords7.1 aggregate; bituminous paving; coarse aggregate; opengraded friction; paving mixturesASTM International takes no position respecting the

30、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 infringement of such rights, are entirely their own responsibility.This standard is

31、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 standard or for additional standardsand should be addressed to ASTM International Head

32、quarters. 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 views known to the ASTM Committee on Standards, at the address shown below.This sta

33、ndard 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).D 692 00 (2004)2