reducing samples of hot mix asphalt (hma) to
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reducing samples of hot mix asphalt (hma) to .

REDUCING SAMPLES OF HOT MIX ASPHALT (HMA) TO

2013-3-26  This procedure covers sample reduction of Hot Mix Asphalt (HMA) to testing size in accordance with AASHTO R 47-08. The reduced portion is to be representative of the original sample.

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REDUCING SAMPLES OF HOT MIX ASPHALT (HMA) TO

2012-11-20  This procedure covers sample reduction of Hot Mix Asphalt (HMA) to testing size in accordance with AASHTO R 47-08. The reduced portion is to be representative of the original sample.

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Reducing Field Samples of Hot Mix Asphalt to Testing Size

Reducing Field Samples of Hot Mix Asphalt to Testing Size (This procedure is based upon AASHTO T 248-89. AASHTO T 248-89 or any subsequent revision may not be used in place of this procedure.) 1. SCOPE 1.1 These methods cover the reduction of field samples of hot mix asphalt (HMA), having a nominal maximum size equal to or less than 1.5 in.

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Reducing Field Samples of Hot Mix Asphalt to Testing Size

1.1 These methods cover the reduction of field samples of hot mix asphalt (HMA), having a nominal maximum size equal to or less than 1.5 in. (37.5 mm), to the appropriate size for testing, employing techniques that are intended to minimize variations in measured characteristics between the test samples so selected and the field sample.

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AASHTO R 47-19 - Techstreet

AASHTO R 47-19 outlines methods for the reduction of large samples of hot mix asphalt (HMA) to the appropriate size for testing, employing techniques that are intended to minimize variations in the measured characteristics between the test samples so selected and the large sample.

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AASHTO R 47-08 (2012) PDF - PDF Online Store

2008-8-1  Standard Practice for Reducing Samples of Hot Mix Asphalt (HMA) to Testing Sizestandard by American Association of State and Highway Transportation Officials, 08/01/2008

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ALDOT-349-86 HOT-MIX ASPHALT TESTING EQUIPMENT

2014-2-19  AASHTO R 47, Standard Practice for Reducing Samples of Hot Mix Asphalt (HMA) to Testing Size . 2.1.2. AASHTO T 27, Standard Method of Test for Sieve Analysis of Fine and Coarse Aggregates . 2.1.3. AASHTO T 30, Standard Method of Test for

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Theoretical Maximum Specific Gravity (G and Density of

2020-8-18  R 47, Reducing Samples of Hot Mix Asphalt (HMA) to Testing Size R 61, Establishing Requirements for Equipment Calibrations, Standardizations, and Checks T 168, Sampling Bituminous Paving Mixtures 2.2. ASTM Standards: C670, Standard Practice for Preparing Precision and Bias Statements for Test Methods for Construction Materials

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EVALUATION OF HOT-MIX ASPHALT SAMPLING

Insuring the integrity and security of hot mix asphalt (HMA) samples is critical to assuring the quality of the installed product and complying with Federal requirements. Samples of HMA are often taken at the plant with limited state supervision. Further, samples are taken from a truck where obtaining a representative sample can be difficult.

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(PDF) Effective reduction of asphalt pavement temperatures

ABSTRACT 1 High surface temperatures increase the risks of rutting and top-down cracking in Hot Mix 2 Asphalt (HMA) pavements. Reducing temperature extr emes in asphalt

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IA Checklist R 47 Reducing Samples of Hot Mix Asphalt

2020-10-22  R 47 Reducing Samples of Hot Mix Asphalt (HMA) to Testing Size . Splitter (Type A (Quartermaster)or Type B (Riffle)) P F NA 1 Was splitter cleaned and lubed, and in good working condition. 2 . Was the splitter lubed with an agent that wouldn’t affect asphalt binder

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AASHTO R 47 - Standard Practice for Reducing Samples of ...

2019-1-1  Standard Practice for Reducing Samples of Hot Mix Asphalt (HMA) to Testing Size This standard practice outlines methods for the reduction of large samples of hot mix asphalt (HMA) to the appropriate size for testing, employing techniques that are intended to minimize variations...

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AASHTO R 47-08 (2012) PDF - PDF Online Store

2008-8-1  Standard Practice for Reducing Samples of Hot Mix Asphalt (HMA) to Testing Sizestandard by American Association of State and Highway Transportation Officials, 08/01/2008

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ALDOT-349-86 HOT-MIX ASPHALT TESTING EQUIPMENT

2014-2-19  AASHTO R 47, Standard Practice for Reducing Samples of Hot Mix Asphalt (HMA) to Testing Size . 2.1.2. AASHTO T 27, Standard Method of Test for Sieve Analysis of Fine and Coarse Aggregates . 2.1.3. AASHTO T 30, Standard Method of Test for

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ASTM D6925 - 15 Standard Test Method for Preparation

R35 Standard Practice for Superpave Volumetric Design for Hot Mix Asphalt (HMA) R47 Standard Practice for Reducing Samples of Hot Mix Asphalt (HMA) to Testing Size. T312 Standard Method of Test for Preparing and Determining the Density of Hot-Mix Asphalt (HMA) Specimens by Means of the Superpave Gyratory Compactor. Other References

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(PDF) Effective reduction of asphalt pavement temperatures

ABSTRACT 1 High surface temperatures increase the risks of rutting and top-down cracking in Hot Mix 2 Asphalt (HMA) pavements. Reducing temperature extr emes in asphalt pavements is a step towards ...

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ALDOT-458 High Temperature Indirect Tensile Test for

2020-2-24  High Temperature Indirect Tensile Test for HMA . 1. Scope 1.1. This method describes a procedure for testing laboratory prepared or plant mixed samples of Hot Mix Asphalt (HMA) for resistance to rutting via an indirect tensile method on a Marshall press. 2.

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CSULB Caltrans - Joint Training Certification Program

hot mix asphalt i The Joint Training and Certification Program (JTCP) has developed a two-part series in Hot Mix Asphalt (HMA) for construction materials lab technicians. To help reduce conflict and delay on construction projects within the state, Caltrans, in partnership with CSULB, has developed a series of joint training and certification ...

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Hot Mix Asphalt Testing Technician cttp University of ...

Exams. The Hot Mix Asphalt Testing Technician certification requires each participant to pass both a written and a performance exam. The written exam is closed-book, and subject to a two-hour time limit. In order to receive certification, 70% of all questions must be

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Emission Reduction Performance of Modified Hot Mix

2017-3-15  Three novel asphalt modifiers with pollutant emission reduction effects and new emissions measurement equipment compatible with several preexisting asphalt production systems are developed in this paper. The effects of various modifier, asphalt binder type, and gradation of hot mix asphalt (HMA) on pollutant emissions are evaluated in the lab through a comprehensive experimental design.

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IA Checklist R 47 Reducing Samples of Hot Mix Asphalt

2020-10-22  R 47 Reducing Samples of Hot Mix Asphalt (HMA) to Testing Size . Splitter (Type A (Quartermaster)or Type B (Riffle)) P F NA 1 Was splitter cleaned and lubed, and in good working condition. 2 . Was the splitter lubed with an agent that wouldn’t affect asphalt binder

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METHOD OF TEST FOR REDUCING SAMPLES OF

2020-1-16  and the large sample. B. REFERENCES . California Test 125 Sampling Highway Materials and Products Used in the Roadway Structural Sections . AASHTO R 47-19 Reducing Samples of Asphalt Mixtures to Testing Size . C. PROCEDURE . The following procedures apply to plant-produced hot mix asphalt (HMA) samples taken in accordance with California Test 125.

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Pavement Materials Partnering Committee Work

2021-1-15  reduction procedures are also not defined within the scope or title of CT 125. Laboratory sample reduction is performed in accordance with AASHTO R47, “Reducing Samples of Hot Mix Asphalt (HMA) to Testing Size,” but it is invoked in the specifications rather than referenced within a CT.

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14) Hot Mix Asphalt - Non QCQA PCN

2015-1-27  HOT MIX ASPHALT (HMA) – NON QC/QA Project # - PCN GENERAL In addition to the requirements of Section 430, “Hot Mix Asphalt (HMA)”, the following provisions apply. CONSTRUCTION REQUIREMENTS A. Contractor Personnel. Replace Section 430.04 A, “Contractor Quality Control (QC)” with the following:

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Development of Guidelines for Reduction of

Development of Guidelines for Reduction of Temperature Differential Damage (TDD) for Hot Mix ... This paper presents results of a study on the subject of thermal segregation of hot mix asphalt (HMA) during pavement construction. The significance of thermal segregation to ... Percent Air Voids of Cored Samples 21 Asphalt Contents of Cored Samples 23

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Inspector’s Handbook: Hot Mix Asphalt Construction

2012-2-10  The mix design is typically accomplished to provide 4% air voids in the laboratory compacted samples. If the air voids are greater than 4%, durability problems might occur due to low asphalt content and the mix being permeable. If the air voids are less than 4%, rutting or bleeding problems might occur because of too much asphalt in mix.

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DETERMINING THE ASPHALT BINDER CONTENT OF HOT

2012-11-20  This procedure covers the determination of asphalt binder content of hot mix asphalt (HMA) by ignition of the binder in accordance with AASHTO T 308-10. Overview The sample is heated in a furnace at 538°C (1000°F) or less; samples may be heated by convection or direct infrared irradiation (IR). The aggregate remaining after burning can be

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Emission Reduction Performance of Modified Hot Mix

2017-3-15  Three novel asphalt modifiers with pollutant emission reduction effects and new emissions measurement equipment compatible with several preexisting asphalt production systems are developed in this paper. The effects of various modifier, asphalt binder type, and gradation of hot mix asphalt (HMA) on pollutant emissions are evaluated in the lab through a comprehensive experimental design.

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WORKABILITY OF HOT MIX ASPHALT - Auburn University

2018-3-9  WORKABILITY OF HOT MIX ASPHALT Jagan M. Gudimettla, L. Allen Cooley, Jr., and E. Ray Brown INTRODUCTION The term workability has been used to describe several properties related to the construction of hot mix asphalt (HMA). First, some have used this term to describe the ease with which HMA can be worked by hand after being placed on the roadway.

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Hot Mix Asphalts 101 - State

2012-5-3  Asphalt Rubber Applications • Asphalt rubber is the process of adding recycled, crumb rubber to hot mix asphalt (called dry process) or the asphalt binder (called wet process) to modify the final mixture • Difficult to use in dense-graded mixtures due to residual crumb rubber • Best used in gap-graded type mixtures (SMA and OGFC)

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