ASTM D3042-2003 Standard Test Method for Insoluble Residue in Carbonate Aggregates《碳酸盐集料中不溶性残渣的标准试验方法》.pdf
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1、Designation: D 3042 03Standard Test Method forInsoluble Residue in Carbonate Aggregates1This standard is issued under the fixed designation D 3042; the number immediately following the designation indicates the year oforiginal adoption or, in the case of revision, the year of last revision. A number
2、 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 covers determination of the percentageof insoluble residue in carbonate aggregates using hydrochloricacid solution to react
3、 the carbonates.1.2 The values stated in SI units are to be regarded asstandard.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 det
4、ermine the applica-bility of regulatory limitations prior to use. Specific precautionstatements are given in Section 7.2. Referenced Documents2.1 ASTM Standards:C 136 Test Method for Sieve Analysis of Fine and CoarseAggregates2C 294 Descriptive Nomenclature for Constituents of Natu-ral Mineral Aggre
5、gates2C 670 Practice for Preparing Precision and Bias Statementsfor Test Methods of Construction Materials2D 4753 Specification for Evaluating, Selecting, and Speci-fying Balances and Scales for Use in Soil, Rock, andConstruction Materials Testing3E 11 Specification for Wire- Cloth and Sieves for Te
6、stingPurposes43. Significance and Use3.1 The amount and size distribution of noncarbonate (in-soluble) material in carbonate aggregates is of interest to thoseconducting research on the polish susceptibility of stone usedin pavements or on the friction properties of pavement sur-faces. In addition,
7、some agencies utilize the test for acceptancepurposes to delineate carbonate aggregates that polish exces-sively and become slippery and those that will not.4. Apparatus4.1 Sieves, U.S. standard 203.2-mm (8-in.) diameter, con-forming to Specification E 11 in the following sizes:9.5-mm (38-in.)4.75-m
8、m (No. 4)2.36-mm (No. 8)1.18-mm (No. 16)600-m (No. 30)300-m (No. 50)150-m (No. 100)75-m (No. 200)4.2 BalanceA balance having a minimum capacity of 15kg and meeting the requirements of Specification D 4753,Class GP5.4.3 Oven, of appropriate size capable of being maintained at110 6 5C (230 6 9F).4.4 A
9、gitation Equipment, such as a jar mill or a magneticstirrer.4.5 Bunsen Burner or Hot Plate.4.6 Receiving Tank, of nonreactive material to receive washwater and residue washed through the 203.2-mm (8-in.)diameter sieves.4.7 Rapid Filter Paper, acid-resistant.4.8 Safety Eyeglasses, Rubber Gloves, Apro
10、ns, and so forth.4.9 Borosilicate Glass Containers, for performing acidleaching test.4.10 pH Paper or pH Meter.5. Reagent5.1 Purity of ReagentsReagent grade chemicals shall beused in all tests. Unless otherwise indicated, it is intended thatall reagents shall conform to the specifications of the Com
11、mit-tee on Analytical Reagents of the American Chemical Society,where such specifications are available.5Use of other grades ispermitted, provided it is first ascertained that the reagent is ofsufficiently high purity to permit its use without lessening theaccuracy of the determination.1This test me
12、thod 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 in 1972. Last previous edition approved in 1997 as D 3042 97
13、.2Annual Book of ASTM Standards, Vol 04.02.3Annual Book of ASTM Standards, Vol 04.08.4Annual Book of ASTM Standards, Vol 14.02.5Reagent Chemicals, American Chemical Society Specifications, AmericanChemical Society, Washington, DC. For suggestions on the testing of reagents notlisted by the American
14、Chemical Society, see Annual Standards for LaboratoryChemicals, BDH Ltd., Poole, Dorset, U.K., and the United States Pharmacopeiaand National Formulary, U.S. Pharmacopeial Convention, Inc. (USPC), Rockville,MD.1Copyright ASTM International, 100 Barr Harbor Drive, PO Box C700, West Conshohocken, PA 1
15、9428-2959, United States.5.2 Hydrochloric Acid (6 N)Prepare a 6 N solution ofhydrochloric acid (HCl).6. Samples6.1 Samples shall be representative of the sources fromwhich they are obtained and shall be reduced to appropriatesize by use of sample splitters or by quartering in accordancewith the Samp
16、ling Section of Test Method C 136.6.1.1 Normally, the aggregate used in the test sample shallbe retained after washing over the 4.75-mm (No. 4) sieve, andpassing the 9.5-mm (38-in.) sieve.6.1.2 Test separate fractions or combined aggregate grad-ings as appropriate.6.2 Dry sample aggregates to consta
17、nt mass at 110 6 5C(230 6 9F).6.3 Use an oven-dry sample having a minimum mass of 500g.7. Procedure for Determining Only the Plus 75 m (No.200) Size Fraction of Insoluble Residue7.1 For many applications, only the plus 75-m (No. 200)size insoluble residue fraction is of interest. This sectionprovide
18、s a procedure for determination of the amount and sizedistribution of only the plus 75-m (No. 200) size insolubleresidue. If the total amount of insoluble residue is desired,follow the procedure in Section 8 and only such portions ofSection 7 as are indicated in Section 8.7.2 Prepare and test sample
19、s in triplicate for each aggregatesampled.7.3 WarningHydrogen chloride gas is released duringthis procedure. Exercise extreme care to prevent corrosive gasfrom entering the laboratory atmosphere. The hydrogen chlo-ride gas that may be produced in the chemical reaction can bedestructive to laboratory
20、 equipment and can also be a definitesafety hazard to laboratory personnel. Under no circumstancesshall the test be performed without proper and adequateventilation. Operators shall be required to wear a mask whenperforming this test.7.4 Place an aggregate sample weighing a minimum of 500g in a suit
21、able borosilicate glass container. The container shallbe vented to allow gas from the reaction to escape and to bedrawn away. Slowly add 1000 mL of 6 N hydrochloric acid(HCl) allowing for excessive effervescence or foaming tosubside before further addition of solution. Agitate the con-tainer and con
22、tents gently by hand until excessive efferves-cence has subsided.7.5 Place the container and contents on an agitating device.7.6 Check the container periodically, and when the reactionappears to have subsided (no obvious bubbling) decant thesolution and add approximately 300 mL of the 6 N HCl andche
23、ck for a reaction. Collect all decant solution in a receivingtank for future use only if determination of the total residuecontent is desired as in Section 8.7.6.1 If a reaction (bubbling) is observed, continue agitationuntil the reaction subsides and repeat the procedure beginningat 7.6.7.7 When no
24、 reaction is observed, heat the container gentlyover a bunsen burner or hot plate. Some carbonate materialswill require heating to temperatures of up to 110C (230F) andmaintaining this temperature level for approximately1hinorder to completely react the carbonate fraction.7.7.1 If no reaction is obs
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