standards for flat and elongated particles in processed coarse aggregate

Section 800 Coarse Aggregate

Section 800—Coarse Aggregate Page 3 Substance Max. % Allowed Mica schist—Materials defined in ASTM C 294 as phyllite or schist. Use GDT 104 to analyze these materials. (Use this requirement for Interstate Construction only.) 10 Flat or elongated particles (with lengths more than five times the average thickness). 10 Glassy particles (slag). 30

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ALDOT-249 PROCEDURE FOR ACCEPTANCE OF FINE AND …

3.14. ASTM D4791 Standard Test Method for Flat Particles, Elongated Particles, or Flat and Elongated Particles in Coarse Aggregate 3.15. ALDOT-50 Method for Determining Particle Size Analysis of Soils 3.16. ALDOT-321 Test for Glassy Particles in Crushed Slag 3.17. ALDOT-355 General Information Concerning Materials, Sources, and Devices

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Crushed Rock Track Ballast Specification

.7 ASTM D4791, Standard Test Method for Flat Particles, Elongated Particles, or Flat and Elongated Particles in Course Aggregate. .8 MTO LS-609 examination form shall be completed in the petrographic analysis process, on a representative ballast sample, by a qualified petrologist certified

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SECTION 20110 BALLAST AND WALKWAY AGGREGATE

Sep 30, 2011· 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 ... A. Wash processed ballast and walkway aggregate to remove fine particle

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Quantification of Shape, Angularity, and Surface Texture ...

of the aggregate involves the shape factor (F) and sphericity (ψ) of the aggregate particles. The shape factor (F) is the ratio of the elongation ratio (q) and the flatness ratio (p), i.e., F p q =. A shape factor equal to 1 represents a rounded or cubic aggregate. Smaller than 1, the particle tends towards being elongated and thin.

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PHYSICAL PROPERTIES OF AGGREGATES

– coarse aggregate angularity (CAA) – fine aggregate angularity (FAA) – flat, elongated particles – clay content ... Physical Properties of Aggregates 29 Flat & Elongated Particles Traffic ESALs Percent.. 10 - 30 x 10 6 10.... percentage of flat and elongated particles Maximum 5 1.

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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.

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Measurement of Flat and Elongation of Coarse Aggregate ...

Coarse aggregate shape (flat and elongated) and angularity are important issues in the highway industry. Elongated aggregates tend to break down during the asphalt emplacement process, or …

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The State of Flat and Elongated Aggregate Requirements for SMA

European specifications require SMA aggregates to have no more than 30 percent Los Angeles (L.A.) abrasion loss (AASHTO T96) and no more than 20 percent flat and elongated (F&E) particles when measured at a 3:1 ratio of length to maximum thickness (ASTM D 4791). However, these strict aggregate requirements were developed for use in Europe due ...

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MATERIAL SPECIFICATION FOR AGGREGATES - …

LS-604 Relative Density and Absorption of Coarse Aggregate . LS-607 Determination of Percent Crushed Particles in Processed Coarse Aggregate . LS-608 Determination of Percent Flat and Elongated Particles in Coarse Aggregate . LS-610 Organic Impurities in Sands for Concrete . LS-614 Freezing and Thawing of Coarse Aggregate

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Evaluation of the Specification for Flat and Elongated ...

Apr 23, 2014· percentage of flat and elongated particles, which may be present in a source, for use in HMA production. ConnDOT currently specifies that not more than 10 percent flat and elongated particles in the final blend of coarse aggregates are permissible for use in HMA production. This range is based on a flat and elongated ratio of 3:1 (the longest

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APPROVAL OF SOURCES OF FINE AND DOH 6 COARSE …

3.2.3.6 Flat or Elongated Particles in Coarse Aggregate – ASTM D4791 3.2.4 Should the inspection at the plant indicate equipment is adequate and the results of the tests specified are satisfactory, the source is considered approved and eligible for use on projects, provided specification compliance is maintained. The source will then be

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Elongated Particle - an overview | ScienceDirect Topics

The test procedure is specified in ASTM D4791: Flat or Elongated Particles in Coarse Aggregate and is performed on coarse aggregate larger than 4.75 mm.The procedure uses a proportional clipper device (Fig. 10.2) to measure the dimensional ratio of a representative sample of aggregate particles.In Fig 10.2, the aggregate particle is first placed with its largest dimension between the swinging ...

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Standard Test Method for Flat Particles, Elongated ...

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.

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Standard Test Method for Flat Particles, Elongated ...

10.1.1 Identification of the coarse aggregate tested, and 10.1.2 Grading of the original aggregate sample, showing percentage retained on each sieve. 10.1.3 For Method A: 10.1.3.1 Number of particles in each sieve size tested, 10.1.3.2 Percentages, calculated by number or by mass, or both, for each group: (1) flat particles, (2) elongated ...

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Idaho Transportation Department

AASHTO T 84 Specific Gravity and Absorption of Fine Aggregate : AASHTO T 304 Uncompacted Void Content Of Fine Aggregate . ASTM D4791 Flat and Elongated Particles in Coarse Aggregate : Bituminous Materials . Idaho IT 61 Sampling and Viscosity Testing Emulsified Asphalt Binders in the Field : Idaho IT 99 Detection of Anti-Stripping Additive in ...

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Standards For Flat And Elongated Particles In Processed ...

SECTION 20110 BALLAST AND WALKWAY AGGREGATE - caltrain.com. D4791 Test Method for Flat Particles, Elongated Particles, or Flat and Elongated Particles in Coarse Aggregates . ...

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FLAT PARTICLES, ELONGATED PARTICLES, OR FLAT AND …

Flat and elongated particles of coarse aggregates have a tendency to fracture more easily than other aggregate particles. When the coarse aggregate does fracture, the gradation will likely change which may be detrimental to the mix. Additionally, flat and elongated particles of aggregate, for some construction uses, may interfere with ...

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Standard Test Method for Flat Particles, Elongated ...

centages of flat particles, elongated particles, or flat and elongated particles in coarse aggregates. 1.2 The values stated in inch-pound units are to be regarded as the standard except in regard to sieve size and the size of aggregate, which are given in SI units in accordance with Specification E 11. The SI units in parentheses are for infor-

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MATERIAL SPECIFICATION FOR AGGREGATES - GENERAL

Flat and Elongated Particles means aggregate particles whose greatest mean dimension in the longitudinal axis compared to the least mean dimension in a plane perpendicular to the longitudinal axis exceeds a ratio of 4:1. Granular means any processed or natural aggregate material with less than 35% by mass passing the 75 µm sieve.

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MATERIAL SPECIFICATION FOR AGGREGATES - HOT MIX …

LS-607 Percent Crushed Particles in Processed Coarse Aggregate . LS-608 Percent Flat and Elongated Particles in Coarse Aggregate . LS-609 Petrographic Analysis of Coarse Aggregate . LS-613 Insoluble Residue of Carbonate Aggregates . LS-614 Freezing and Thawing of Coarse Aggregate . Page 2 Rev. Date: 11/2013 OPSS.MUNI 1003

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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.

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STUDY GUIDE FOR AGGREGATE CERTIFICATION

Oct 24, 2012· GDT-129 – Method of Test for Determining Flat and Elongated Particles in Coarse Aggregates ..... 126 . GDT-132 – Method of Test for Determining Friable Particles in Fine Aggregate ..... 128 . GDT-133 – Method of Test for Determining Friable and/or Weathered Particles in Coarse ..... 130 . Aggregate . VII.

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Inspection & Sampling Procedures for Fine & Coarse …

T 85 Specific Gravity and Absorption of Coarse Aggregate T 112 Clay Lumps and Friable Particles in Aggregate T 248 Reducing Field Samples of Aggregate to Testing Size T 304 Uncompacted Void Content of Fine Aggregate ASTM Test Methods D 4791 Flat Particles, Elongated Particles, or Flat and Elongated Particles in Coarse Aggregate

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DETERMINATION OF PERCENT FLAT AND ELONGATED …

1.1 This method covers the determination of the percentage of flat and elongated particles in processed coarse aggregate, retained on the 4.75 mm sieve by measurement of individual particles. 3. DEFINITION . 3.1 FLAT AND ELONGATED pieces shall be those particles whose greatest dimension in …

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Materials Testing Manual | ADOT

Flat and Elongated Particles in Coarse Aggregate Note: It shall be assured that the appropriate test methods as given in the project requirements are being adhered to. Series 300 - …

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Aggregates for Concrete - Memphis

left is filled with large aggregate particles of uniform size (AASHTO M 6/ M 80) plus an additional six more coarse aggregate size numbers. Fine aggregate or sand has only one range of particle sizes for general construction and highway work. The grading and grading limits are usually expressed as the percentage of material passing each sieve ...

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Materials Engineering - ENGTEC CONSULTING INC.

ASTM D4791 Flat Particles, Elongated Particles, or Flat and Elongated Particles in Coarse Aggregate ASTM D5821 Determining the Percentage of Fractured Particles in Coarse Aggregate AASHTO T 166 Bulk Specific Gravity of Compacted Asphalt Mixtures Using Saturated Surface-Dry …

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MATERIAL SPECIFICATION FOR AGGREGATES - SURFACE …

LS-607 Percent Crushed Particles in Processed Coarse Aggregate LS-608 Percent Flat and Elongated Particles in Coarse Aggregate LS-609 Petrographic Analysis of Coarse Aggregate LS-613 Determination of Insoluble Residue of Carbonate Aggregates LS-614 Freezing and Thawing of Coarse Aggregate LS-618 The Resistance of Coarse Aggregate to Degradation ...

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