specification of flat and elongated particles

To: Plan Holders for Improvements to the

Determine the percentage of flat and/or elongated particles by ASTM D4791 with the following modifications: 1) The aggregates shall be separated into 2 size fractions, particles greater than 1/2 inch sieve and particles passing the 1/2 inch sieve and retained on the No. 4 sieve. 2) The percentage of flat and/or elongated particles in

Standard Test Method for Flat Particles, Elongated ...

Flat Particles, Elongated Particles, or Flat and Elongated Particles in Coarse Aggregate1 This standard is issued under the fixed designation D4791; the number immediately following the designation indicates the year of original adoption or, in the case of revision, the year of last revision.

RECOMMENDED GUIDE SPECIFICATIONS FOR LONG LIFE …

b. Coarse Aggregate Flat and Elongated Particles. The maximum amount of flat and elongated particles in coarse aggregate for SMA is shown in the table below: % of Flat and Elongated Particles 20% Flat and Elongated % by Count 5:1 (max to min) ASTM D4791 Section 8.4 5% c. Coarse Aggregate Soundness for SMA: The percent degradation of the source

ATTACHMENT B ELAINE SPRAUVE LIBRARY AND …

and flat and elongated particles, when tested in accordance with ASTM D4791 with a value of 5:1 Slag shall be air-cooled, blast furnace slag, and shall have a compacted weight of not less than 70 pounds per cubic foot when tested in accordance with ASTM C29. b ne aggregate. Fine aggregate shall consist of clean, sound, tough, durable, angular ...

SECTION 20110 BALLAST AND WALKWAY AGGREGATE

 · D4791 Test Method for Flat Particles, Elongated Particles, or Flat and Elongated Particles in Coarse Aggregates . Caltrain Standard Specifications 20110-2 September 30, 2011 BALLAST AND WALKWAY AGGREGATE 13. E11 Specification for Wire Cloth and Sieves for Testing Purposes C. California Public Utilities Commission (CPUC) General Orders: 1. 118 ...

specification of flat and elongated particles

Page 2 Standard Construction Specifications Division 40 – Asphalt Surfacing Revised 11/08 Nuclear Method ASTM D-4791 Flat and Elongated Particles >Get Price; Statement of Work and The amount of flat and elongated particles shall not For the purposes of articles in this SOW and Technical Specification, >Get Price; Description.

ASTM-D4791 | Standard Test Method for Flat Particles ...

1.1 This test method covers the determination of the percentages of flat particles, elongated particles, or flat and elongated particles in coarse aggregates. Two procedures, Method A and Method B, are presented in this standard. Method A is a reflection of the original procedure as developed prior to Superpave and is intended for all non-Superpave applications.

SPECIAL SPECIFICATION 3267 Dense-Graded Hot-Mix …

Flat and elongated particles @ 5:1, %, max Tex-280-F 10 Fine Aggregate Linear shrinkage, %, max Tex-107-E 3 Combined Aggregate 3 Sand equivalent, %, min Tex-203-F 45 1. Not used for acceptance purposes. Optional test used by the Engineer as an indicator of the need for further investigation 2. Only applies to crushed gravel. 3.

ASTM D4791-19

1.1 This test method covers the determination of the percentages of flat particles, elongated particles, or flat and elongated particles in coarse aggregates. Two procedures, Method A and Method B, are presented in this standard. Method A is a reflection of the original procedure as developed prior to Superpave and is intended for all non-Superpave applications.

Flat and Elongated Aggregates in Superpave Regime ...

 · Some states have recommended changing the definition of flat and elongated aggregates from 5:1 to 3:1 and an increase in the maximum allowable percentage of flat and elongated (F&E) particles to 20% or higher in the Superpave aggregate specification.

ASTM International

 · 1.1 This test method covers the determination of the percentages of flat particles, elongated particles, or flat and elongated particles in coarse aggregates. Two procedures, Method A and Method B, are presented in this standard. ... 1.2.1 Exception (regarding sieves, per Specification E11)-The values stated in SI units shall be considered ...

EVALUATION OF THE EFFECT OF FLAT AND ELONGATED …

The specification states that the value measured shall not exceed 10 percent. In the ASTM D4791 test procedure a particle''s elongation is evaluated by comparing its length to width, and its flatness by comparing its width to thickness. With this test procedure it is possible to have aggregate particles which are flat, elongated, flat and ...

ASTM D4791

1.1 This test method covers the determination of the percentages of flat particles, elongated particles, or flat and elongated particles in coarse aggregates. Two procedures, Method A and Method B, are presented in this standard. Method A is a reflection of the original procedure as developed prior to Superpave and is intended for all non-Superpave applications.

Superpave Aggregate Tests/Aggregates for HMA (Final ...

What is the Flat, Elongated Particles Test? measured on larger particles; based on dimensional ratio of particles (usually 1:5); requirements of maximum percentage of flat and elongated particles depend on traffic level; flat, elongated particles cause non-uniformity and potential for segregation

NCAT Report 17-03R EFFECT OF FLAT AND ELONGATED …

European specifications were considered when developing the requirements of AASHTO M325 and typically require SMA aggregates to have no more than 30 percent Los Angeles abrasion loss and no more than 20 percent flat and elongated (F&E) particles when measured at a 3:1 ratio of length to maximum thickness.

Specification

Flat and Elongated Particles. Flat and elongated particles are defined as the coarse aggregate particles which have a ratio of maximum to minimum dimensions greater than five (5). The percentage of flat and elongated particles is measured on the portion of the blended aggregate retained on the 9.5 mm sieve by ASTM Standard Method of Test D 4791 ...

AGGREGATE TESTS FOR HOT MIX ASPHALT: STATE OF THE …

The percentage of flat particles, elongated particles, and total flat and elongated particles is calculated either by number or by mass. Figure 1 indicates that 37 percent of the states surveyed have some requirement to control flat and elongated particles, but only a very few states measure flat and elongated particles separately

specification of flat and elongated particles

specification of flat and elongated particles [randpic] Evaluation of the Specification for Flat and Elongated a maximum acceptable percentage of flat and elongated particles that a coarse aggregate blend may have before being ruled out as an acceptable source. Regional state requirement

866 Asphalt Mixture Design

- Flat and elongated particles are determined using particles retained on the #4 sieve (4.75mm) and larger. The determination of the F&E percentage is based on weight; however, the sample size is in tended to be by count (200 pieces, minimum). 866.2.3.2 Asphaltic Binder Material

1208 FLAT AND ELONGATED PARTICLES IN COARSE …

Flat and elongated particles in a +9.5mm (3/8") aggregate could interfere with and/or make it difficult to consolidate and place these materials. 1208.2 APPARATUS A. Proportional Caliper Device – This apparatus is suitable for this testing procedure. Consisting of a base with two fixed posts and a swinging

This specification is DisApproved

Flat and Elongated Particles. Flat and elongated particles are defined as the coarse aggregate particles which have a ratio of maximum to minimum dimensions greater than five (5). The percentage of flat and elongated particles is measured on the portion of the blended aggregate retained on the 9.5 mm sieve by ASTM Standard Method of Test D 4791 ...

Standard Test Method for Flat Particles, Elongated ...

Flat Particles, Elongated Particles, or Flat and Elongated Particles in Coarse Aggregate1 This standard is issued under the fixed designation D 4791; the number immediately following the designation indicates the year of original adoption or, in the case of revision, the year of last revision.

Evaluation of the Effect of Flat and Elongated Particles ...

Flat and elongated particles have long been considered undesirable in hot mix asphalt (HMA) mixes due to their tendency to break down during construction and traffic. Currently, the Superpave mix design system currently specifies a maximum limit of 10 percent of flat and elongated particles at the 5:1 ratio for the design aggregate blend.

Crushed Rock Track Ballast Specification

Technical Master Specification Date: October 2019 Section 32 11 25 Crushed Rock Track Ballast Specification Page 2 of 8 Size Coarse Aggregate by Abrasion and Impact in the Los Angeles Machine .7 ASTM D4791, Standard Test Method for Flat Particles, Elongated Particles, or Flat and Elongated Particles in Course Aggregate.

Standard Test Method for Flat Particles, Elongated ...

ASTM D4791, 2019 Edition, November 2019 - Standard Test Method for Flat Particles, Elongated Particles, or Flat and Elongated Particles in Coarse Aggregate This test method covers the determination of the percentages of flat particles, elongated particles, or flat and elongated particles in coarse aggregates.

1. SCOPE KT-59 ASTM D 4791 2 REFERENCED DOCUMENTS …

ASTM D 4791; Standard Test Method for Flat Particles, Elongated Particles, or Flat and Elongated Particles in Coarse Aggregate 3. DEFINITIONS 3.1. Flat and elongated particles of aggregate-those particles of aggregate having a ratio of length to thickness greater than a specified value. 3.2.

ASTM D4791 PDF

 · specification of flat and elongated particles. Mining Equipment Sales Companies. Percentage of Fractured Particles shall be determined on the aggregate blend. The user should set the larger opening of the Caliper equal. The fine aggregate shall be limestone, dolomite, crushed gravel, steel furnace The excess heaped aggregate is struck of using ...

FLAT AND ELONGATED PARTICLES IN COARSE AGGREGATE

FLAT AND ELONGATED PARTICLES IN COARSE AGGREGATE FOP FOR ASTM D 4791 Scope . This FOP covers the determination of the percentage, by mass, of flat and elongated particles in coarse aggregates for comparison with specification limits. This FOP can be performed in conjunction with AASHTO T 27/T 11.

DETERMINING FLAT AND ELONGATED PARTICLES

DETERMINING FLAT AND ELONGATED PARTICLES TXDOT DESIGNATION: TEX-280-F CONSTRUCTION DIVISION 2 – 3 LAST REVIEWED: SEPTEMBER 2014 4.2 Reduce the sample to an amount suitable for testing in accordance with Tex-200-F. 5. PROCEDURE 5.1 Oven-dry the sample to constant weight, at a temperature of 230 ± 9°F (110 ± 5°C).

Evaluation of the specification for flat and elongated ...

Evaluation of the specification for flat and elongated particles for use in hot mix asphalt in Connecticut.

Effects of flat and elongated particles upon properties of ...

aggregate particles are fairly equidimensional, crushed glass particles, and crushed bottle glass particles in particular, tend to be flat and elongated, and very angular. Also, the surface texture of glass aggre­ gate is very smooth compared to that of any rock aggregate. Although

Flat and elongated device for measuring particle sizes ...

Prior apparatus and methods for measuring individual particles of aggregate of specific sieve size to determine the ratio of width to thickness, length to width, or length to thickness include that disclosed in Standard Test Method for Flat Particles, Elongated Particles, or Flat and Elongated Particles in Coarse Aggregate, ASTM Designation D 4791-95, the entire contents of which are ...

Flat, Elongated Particles (ASTM D4791)

Flat, Elongated Particles (ASTM D4791) Scope: This test method covers the determination of the percentages of flat particles, elongated particles, or flat and elongated particles in coarse aggregates. Two procedures, Method A and Method B, are presented in this standard.