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Flat and Elongated Particles Pavement Interactive

OverviewBackgroundTest DescriptionResultsThe flat and elongated particle test is used to determine the dimensional ratios for aggregate particles of specific sieve sizes. This characterization is used in the Superpave specification to identify aggregate that may have a tendency to impede compaction or have difficulty meeting VMA specifications due to aggregate degradation. Flat or elongated particles (Figure 1) tend to lock up more readily (rather than reorient) during 在pavementinteractive上查看更多信息

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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FLAT PARTICLES, ELONGATED PARTICLES, OR FLAT AND

weighed to determine a percentage of flat, elongated, or flat and elongated particles in a sample. Superpave specifications require hot mix asphalt to have less than 10% flat and elongated particles using a 5:1 ratio. Apparatus Proportional Caliper Device. Balance, accurate to 0.5% of

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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 requirements for flat and elongated particles are shown in Table 1. Table 1. Regional States Flat and Elongated Specifications State Specification ASTM D4791, Method B

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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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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.

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specification of flat and elongated particles

Flat and Elongated Particles Pavement InteractiveOVERVIEWBACKGROUNDTEST DESCRIPTIONRESULTSThe flat and elongated particle test is used to determine the dimens

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5 Aggregate Specifications and Requirements

Specifications are generally clear, concise, quantitative descriptions of the particles. Absorption is expressed as a percentage of the dry weight. 5-3 restriction on the number of flat and elongated pieces. Section 904.03 sets the limits for the number of flat and elongated pieces. A flat and

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ITEM P-209 CRUSHED AGGREGATE BASE COURSE

ASTM D 4791 Flat Particles, Elongated Particles, or Flat and Elongated Particles in . Coarse Aggregate. END OF ITEM P-209. MAA-CO-XXX Project Title P-209-4 Technical Specifications BWI Marshall Airport/Martin State Airport Crushed Aggregate Base Course

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specification of flat and elongated particles

Flat and Elongated Particles Pavement InteractiveOVERVIEWBACKGROUNDTEST DESCRIPTIONRESULTSThe flat and elongated particle test is used to determine the dimens

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ITEM P-209 CRUSHED AGGREGATE BASE COURSE

ASTM D 4791 Flat Particles, Elongated Particles, or Flat and Elongated Particles in . Coarse Aggregate. END OF ITEM P-209. MAA-CO-XXX Project Title P-209-4 Technical Specifications BWI Marshall Airport/Martin State Airport Crushed Aggregate Base Course

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ASTM D4791 Standard Test Method for Flat Particles

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

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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.

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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).

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Flat and elongated particle YouTube

Apr 21, 2011Idiots Tree Felling Fails with Chainsaw Machine Tree Falls on Head and House Duration: 8:11. Woodart Presents Recommended for you

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作者: pavementinteractive

Construction and Materials Manual Wisconsin Department

Construction and Materials Manual Wisconsin Department of Transportation Chapter 8 Materials Testing, Sampling, Acceptance Section 60 Materials Testing and Acceptance Aggregates Standard specification references to aggregate testing and sampling methods contained in this chapter: flat and elongated aggregate pieces

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SECTION 20110 BALLAST AND WALKWAY AGGREGATE

Caltrain Standard Specifications 20110-1 September 30, 2011 BALLAST AND WALKWAY AGGREGATE SECTION 20110 BALLAST AND WALKWAY AGGREGATE PART 1 GENERAL 1.01 DESCRIPTION A. Section includes specifications for furnishing and placing ballast and walkway aggregate. D4791 Test Method for Flat Particles, Elongated Particles, or Flat and

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Superpave Aggregate Tests/Aggregates for HMA (Final

Start studying Superpave Aggregate Tests/Aggregates for HMA (Final). Learn vocabulary, terms, and more with flashcards, games, and other study tools.

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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.

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SPECIAL SPECIFICATION 4391 Ballasted Track Construction

9. Percentage of Flat and/or Elongated Particles. Percent of flat and/or elongated particles shall be determined in accordance with U.S. Army Corps of Engineers Test CRD-C-119. 10. Plasticity Index. The plastic limit, liquid limit and plasticity index shall be determined in accordance with ASTM D 423 and D 424. Each sample shall be

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SECTION 20110 BALLAST AND WALKWAY AGGREGATE

SECTION 20110 BALLAST AND WALKWAY AGGREGATE PART 1 GENERAL 1.01 DESCRIPTION A. Section includes specifications for furnishing and placing ballast and walkway aggregate. For the purpose of this Section ballast refers to ballast for main D4791 Test Method for Flat Particles, Elongated Particles, or Flat and

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ASTM D4791-10 Standard Test Method for Flat Particles

ASTM D4791-10 Standard Test Method for Flat Particles, Elongated Particles, or Flat and Elongated Particles in Coarse Aggregate. 1.1 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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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.

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SPECIAL SPECIFICATION 4391 Ballasted Track Construction

9. Percentage of Flat and/or Elongated Particles. Percent of flat and/or elongated particles shall be determined in accordance with U.S. Army Corps of Engineers Test CRD-C-119. 10. Plasticity Index. The plastic limit, liquid limit and plasticity index shall be determined in accordance with ASTM D 423 and D 424. Each sample shall be

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ASTM D4791-10 Standard Test Method for Flat Particles

ASTM D4791-10 Standard Test Method for Flat Particles, Elongated Particles, or Flat and Elongated Particles in Coarse Aggregate. 1.1 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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EFFECT OF AGGREGATE GRADATION ON PERMANENT

Currently, the flat and elongated specification used in the Superpave mix design system is provided in AASHTO MP-2: Standard Specification for Superpave Volumetric Mix Design (1) and states that the aggregate shall meet the shape requirements of ASTM D4791: Standard Method for Flat or Elongated Particles in Coarse Aggregate (2). The

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nc flat and elongated specs on aggregate Ore plant

May 30, 2013FLAT PARTICLES, ELONGATED PARTICLES, OR FLAT AND ELONGATED Flat and Elongated Particles of Aggregate Superpave specifications require hot mix asphalt to have less than 10% flat and elongated particles using a 5:1 ratio.

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Section 902 AGGREGATES

Maximum flat and elongated particles of 15.0 percent as measured on the greater than or retained on the ¾-inch sieve using a 3:1 aspect ratio (ASTM D 4791); and iv. Maximum Loss by Washing per MTM 108 of 2.0 percent for materials produced entirely by crushing rock, boulders,

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flat and elongated aggregate from crusher

Flat and Elongated: Advances Using Digital Image Analysis. Flat and Elongated: Advances Using Digital Image Analysis N. H. Maerz, Rock Mechanics and Explosives Research Center, University of Missouri-Rolla, MO, USA W. Zhou, Department of Geological Engineering, University of Missouri-Rolla, MO, USA Abstract Coarse aggregate shape (flat and elongated) is an important issue in the highway

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Summary Aggregate Properties and the Performance of

The Superpave method specifies ASTM D4791, â Standard Test Method for Flat Particles, Elongated Particles, or Flat and Elongated Particles,â to evaluate aggregate shape with criteria for a maximum percentage (10% by weight) exceeding the 5 1 ratio of maximum to min- imum dimension.

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SECTION 20110 BALLAST AND WALKWAY AGGREGATE

SECTION 20110 BALLAST AND WALKWAY AGGREGATE PART 1 GENERAL 1.01 DESCRIPTION A. Section includes specifications for furnishing and placing ballast and walkway aggregate. For the purpose of this Section ballast refers to ballast for main D4791 Test Method for Flat Particles, Elongated Particles, or Flat and

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Application Description Portland Cement Concrete User

Portland Cement and Supplementary Cementitious Materials. Although it comprises between only 7 to 15 percent of the absolute volume of concrete mixture, it is the hardened paste that is formed by hydration of the cement upon the addition of water that binds the aggregate particles together to

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Flat and Elongated: Advances Using Digital Image Analysis

Figure 1: Proportional Caliper for measuring flat and elongated particles Taking for example the current methodology for measuring flat and elongated particles, as per ASTM specification D 4791-95 (ASTM, 1995). This involves first obtaining a sample and screening it into the

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ITEM P-401 PLANT MIX BITUMINOUS PAVEMENTS

The aggregate shall not contain more than a total of 8 percent, by weight, of flat particles, elongated particles, and flat and elongated particles, when tested in accordance with ASTM D 4791 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

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Flat-and-Elongated-Particles Flat and Elongated

Flat and Elongated Particles • Overview • The flat and elongated particle test is used to determine the dimensional ratios for aggregate particles of specific sieve sizes. This characterization is used in the Superpave specification to identify aggregate that may have a tendency to impede compaction or have difficulty meeting VMA specifications due to aggregate degradation.

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FlatElongated Particles

SD 212 Page 3 mso.mat 9-19 4. Report: 4.1 Report the percent flat and elongated particles in the total sample (Weighted average) to the nearest 0.1 percent or whole number as required by the specification.

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