AASHTO M 29-2012 Standard Specification for Fine Aggregate for Bituminous Paving Mixtures.pdf

1、Standard Specification for Fine Aggregate for Bituminous Paving Mixtures AASHTO Designation: M 29-12 ASTM Designation: D1073-11 American Association of State Highway and Transportation Officials 444 North Capitol Street N.W., Suite 249 Washington, D.C. 20001TS-1c M 29-1 AASHTO Standard Specification

2、 for Fine Aggregate for Bituminous Paving Mixtures AASHTO Designation: M 29-12 ASTM Designation: D1073-11 1. SCOPE 1.1. This specification covers fine aggregate for use in bituminous paving mixtures. 1.2. This specification is intended to describe material from a single supplier. When material from

3、two or more suppliers is to be blended to produce a grading to meet requirements as described in a specification for bituminous paving mixtures, the grading requirements of Table 1 of this specification need not apply. Table 1Grading Requirements for Fine Aggregates Amounts Finer Than Each Laborator

4、y Sieve (Square Openings), Mass, % Sieve Size Grading No. 1 Grading No. 2 Grading No. 3 Grading No. 4 Grading No. 5 9.5 mm (3/8in.) 100 100 100 4.75 mm (No. 4) 95 to 100 100 100 80 to 100 80 to 100 2.36 mm (No. 8) 70 to 100 75 to 100 95 to 100 65 to 100 65 to 100 1.18 mm (No. 16) 40 to 80 50 to 74 8

5、5 to 100 40 to 80 40 to 80 600 m (No. 30) 20 to 65 28 to 52 65 to 90 20 to 65 20 to 65 300 m (No. 50) 7 to 40 8 to 30 30 to 60 7 to 40 7 to 46 150 m (No. 100) 2 to 20 0 to 12 5 to 25 2 to 20 2 to 30 75 m (No. 200) 0 to 10 0 to 5.0 0 to 5.0 0 to 10 1.3. The values stated in SI units are to be regarde

6、d as the standard. Inch-pound units, shown in parentheses, are for information only. Note 1When obtaining materials from two or more suppliers that do not meet the gradings in Table 1 and that are to be blended, it is recommended that the specifying or the ordering agency specify the alternative gra

7、dings to be supplied. 2. REFERENCED DOCUMENTS 2.1. AASHTO Standards: M 92, Wire-Cloth Sieves for Testing Purposes T 2, Sampling of Aggregates T 11, Materials Finer Than 75-m (No. 200) Sieve in Mineral Aggregates by Washing T 27, Sieve Analysis of Fine and Coarse Aggregates T 84, Specific Gravity and

8、 Absorption of Fine Aggregate 2015 by the American Association of State Highway and Transportation Officials.All rights reserved. Duplication is a violation of applicable law.TS-1c M 29-2 AASHTO T 89, Determining the Liquid Limit of Soils T 90, Determining the Plastic Limit and Plasticity Index of S

9、oils T 104, Soundness of Aggregate by Use of Sodium Sulfate or Magnesium Sulfate T 354, Specific Gravity and Absorption of Aggregate by Volumetric Immersion Method 2.2. ASTM Standards: C125, Standard Terminology Relating to Concrete and Concrete Aggregates D3665, Standard Practice for Random Samplin

10、g of Construction Materials E29, Standard Practice for Using Significant Digits in Test Data to Determine Conformance with Specifications 3. TERMINOLOGY 3.1. Definitions: 3.1.1. For definitions regarding aggregate types, see ASTM C125. 4. ORDERING INFORMATION 4.1. Orders for material under this spec

11、ification shall include the following: 4.1.1. Reference to this specification, M 29, and year of issue; 4.1.2. Grading (Section 6.2 and Table 1), or alternate grading designated by the purchaser; 4.1.3. Supplementary requirement for sulfate soundness, if required, including salt to be used (Section

12、S1); and 4.1.4. Any exceptions or additions to this specification. 5. GENERAL CHARACTERISTICS 5.1. Fine aggregate is aggregate passing the 9.5-mm (3/8-in.) sieve and almost entirely passing the 4.75-mm (No. 4) sieve. It shall consist of natural sand, or of sand prepared from stone, or of crushed bla

13、st-furnace slag, or gravel, or combinations thereof. It shall consist of hard, tough grains, free of injurious amounts of clay, loam, or other deleterious substances. 6. PHYSICAL REQUIREMENTS 6.1. To determine conformance to this specification, each value for grading (and sulfate soundness, when req

14、uired) shall be rounded to the nearest 1 percent, except if the percentage passing the 75-m (No. 200) sieve is less than 10 percent, it shall be rounded to the nearest 0.1 percent. Each value for plasticity index shall be rounded to the nearest 0.1 unit. Round according to the rounding-off method of

15、 ASTM E29. 6.2. GradingThe grading of the fine aggregate shall conform to the grading in Table 1 for the grading number specified in the order, or other grading designated by the purchaser. 2015 by the American Association of State Highway and Transportation Officials.All rights reserved. Duplicatio

16、n is a violation of applicable law.TS-1c M 29-3 AASHTO 6.3. Grading Variability LimitsFor continuing shipments of fine aggregate from a given source, the fineness modulus shall not vary more than 0.25 from the base fineness modulus. The base fineness modulus shall be that value that is typical of th

17、e source, and shall be determined from previous tests, or if no previous tests exist, from the average of the fineness modulus values for the first 10 samples (or all preceding samples if less than 10) on the order. If necessary, the base fineness modulus may be changed when approved by the purchase

18、r. Note 2The proportioning of a bituminous mixture may be dependent on the base fineness modulus of the fine aggregate to be used. Therefore, when it appears that the base fineness modulus is considerably different from the value used in the bituminous mixture, a suitable adjustment in the mixture m

19、ay be necessary. 6.4. Plasticity IndexThe plasticity index of the fraction passing the 425-m sieve (No. 40) shall not exceed 4.0. 6.5. Specific GravityThe specific gravity and absorption values are important aggregate properties that may be used in proportioning and volumetric calculations for bitum

20、inous mixtures. 7. METHODS OF SAMPLING AND TESTING 7.1. The aggregate shall be sampled and the properties enumerated in this specification shall be determined in accordance with the following methods: 7.1.1. SamplingT 2; 7.1.2. Random SamplingASTM D3665; 7.1.3. GradingT 27 and T 11, Procedure B; 7.1

21、.4. Fineness ModulusT 27; 7.1.5. Plasticity IndexT 89 and T 90; and 7.1.6. Specific GravityT 84 or T 354. 8. KEYWORDS 8.1. Aggregate; bituminous paving; fine aggregate; paving mixtures. SUPPLEMENTARY REQUIREMENT The following supplementary requirement shall apply only when specified by the purchaser

22、 in the contract or order. S1. SULFATE SOUNDNESS S1.1 The fine aggregate, when subjected to five cycles of the soundness test according to T 104, shall have a weighted loss of not more than 15 percent when sodium sulfate is used or 20 percent when magnesium sulfate is used. A purchaser or agency may

23、 specify different requirements for soundness. If the salt to be used is not stated by the purchaser, the fine aggregate shall be acceptable if it meets the requirements when tested with either salt. 2015 by the American Association of State Highway and Transportation Officials.All rights reserved. Duplication is a violation of applicable law.