ASTM_D_5711_-_03.pdf

Designation:D 5711 03Standard Test Method forDetermining the Adherent Coating on Coarse Aggregates1This standard is issued under the fixed designation D 5711;the number immediately following the designation indicates the year oforiginal adoption or,in the case of revision,the year of 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.1.Scope1.1 This test method is used to determine the adherentcoating on coarse aggregate(aggregate retained on the2.36-mm(No.8)sieve)for the following purposes:1.1.1 Preliminary investigation of mineral aggregatesources.1.1.2 Control of mineral aggregates used in hot mix asphalt(HMA)pavements,seal coats,cover coats,surface treatments,cold mix asphalt,and portland cement concrete at the source ofsupply.1.1.3 Control of mineral aggregate processing requirements.1.1.4 Acceptance or rejection of aggregates based on adher-ent coating.1.2 The values shown in SI units are to be regarded as thestandard.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 practices and determine the applica-bility of regulatory limitations prior to use.NOTE1This test method is modeled after Federal Land Highways T512-94.2.Referenced Documents2.1 ASTM Standards:C 117 Test Method for Material Finer than 75-m(No.200)Sieve in Mineral Aggregates by Washing2C 136 Test Method for Sieve Analysis of Fine and CoarseAggregates2C 702 Practice for Reducing Samples of Aggregate toTesting Size2D 75 Practice for Sampling Aggregates3D 448 Classification for Sizes of Aggregate for Road andBridge Construction3E 11 Specification for Wire-Cloth Sieves for Testing Pur-poses43.Terminology3.1 Definitions:3.1.1 adherent coating,nfine particles smaller than 75-m(No.200)that stick(adhere)to the coarse aggregate particles.3.1.2 coarse aggregate,naggregate predominately re-tained on the 2.36-mm(No.8)sieve.4.Summary of Test Method4.1 A sample of dry aggregate is separated on the 2.36-mm(No.8)sieve.The mass of the material coarser than the2.36-mm(No.8)sieve is determined and the material iswashed over a 75-m(No.200)sieve.After drying,the massof the sample is again determined and compared to the originalsample mass.The difference in the masses is determined andcalculated as a percentage of the original mass and reported asadherent coating.5.Significance and Use5.1 This test method assigns a measurable value to theamount of fine material adhering to the aggregate.6.Apparatus6.1 BalancesBalances or scales readable to 0.1 g andaccurate to 0.1 g or 0.1%of the test load,whichever is greater,at any point within the range of use.6.2 Sieves37.5-mm(1.5-in.),25-mm(1-in.),19-mm(34-in.),12.5-mm(12-in.),9.5-mm(38-in.),4.75-mm(No.4),2.36-mm(No.8),and 75-m(No.200)in accordance with therequirements of Specification E 11.6.3 Mechanical Sieve ShakerA mechanical sieve shakershall impart a vertical,or lateral and vertical,motion to thesieve,causing the particles thereon to bounce and turn so as topresent different orientations to the sieving.NOTE2Tyler Rotap,Soiltest model CL-305A and Rainhart 637(“Maryann”)shakers have been found to be acceptable.5Others that1This test method is under the jurisdiction of ASTM Committee D04 on Roadand Paving Materials and is the direct responsibility of Subcommittee D04.51 onAggregate Tests.Current edition approved July 10,2003.Published September 2003.Originallyapproved as Proposal P 242 in 1994.Last previous edition approved in 1995 asD 5711 95.2Annual Book of ASTM Standards,Vol 04.02.3Annual Book of ASTM Standards,Vol 04.03.4Annual Book of ASTM Standards,Vol 14.02.5Available from W.S.Tyler,3200 Bessemer City Road,Box 8900,Gastonia,NC28053,and Soiltest Inc.,86 Albreicht Dr.,P.O.Box 8004,Lake Bluff,IL60044-8004.1Copyright ASTM International,100 Barr Harbor Drive,PO Box C700,West Conshohocken,PA 19428-2959,United States.provide comparable results to these models are also acceptable.6.4 OvenAn oven of appropriate size capable of main-taining a uniform temperature of 110 6 5C(230 6 9F).7.Sampling7.1 Sample the aggregate in accordance with Practice D 75.7.2 Thoroughly mix the sample and reduce it to an amountsuitable for testing,using the applicable procedures describedin Practice C 702.The sample for testing shall be approxi-mately the mass desired when dry and shall be the end result ofthe reduction.Reduction to an exact predetermined mass is notpermitted.7.3 The mass of the test sample shall be in accordance withTable 1.8.Procedure8.1 Dry the sample to constant mass at a temperature of 1106 5C(230 6 9F).Conduct a sieve analysis of the aggregatein accordance with Test Method C 136,using the 37.5-mm(1.5-in.),25-mm(1-in.),19-mm(34-in.),12.5-mm(12-in.),9.5-mm(38-in.),4.75-mm(No.4),and 2.36-mm(No.8)sieves.8.2 Discard all material passing the 2.36-mm(No.8)sieve.8.3 Det