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Compaction and Best Practices for Tender Asphalt Mixes

Compaction and Best Practices for Tender Asphalt Mixes

Compaction and Best Practices for Tender Asphalt Mixes

2020-1-28  Compaction and Best Practices for Tender Asphalt Mixes Trevor Moore, P.Eng., GSC Corporate Technical Director Miller Paving Limited Nova Scotia User Producer Group – April 10, 2014

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Compaction Theory and Best Practices - University of Idaho

2017-11-2  “Compaction is the single most important factor that affects pavement performance in terms of durability, fatigue life, resistance to deformation, strength and moisture damage.” –C. S. Hughes, NCHRP Synthesis 152, Compaction of Asphalt Pavement, (1989) “The amount of air voids in an asphalt mixture is probably the single most important factor that affects performancethroughout the life of an

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Graniterock: Compaction Of Tender Mixes

Some density can be achieved below this temperature range, however the amount of compaction available is limited to roughly 2%. ROLLING PATTERNS To compact tender mixes the contractor has two choices. First you can compact the mix in the upper and lower tender zones where the mix is internally stable and does not move or shove.

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Factors Affecting Compaction of Asphalt Pavements

Compaction of Stiff and Tender Asphalt Concrete Mixes .....69 James A. Scherocman LONGITUDINAL JOINT DENSITY ... “Best Management Practices to Minimize Emissions During HMA Construction (EC- ... Factors Affecting Compaction of Asphalt Pavements

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Tender Mixes – Pavement Interactive

These light ends will have much the same effect as moisture at high temperatures on compaction of the mix. Excess asphalt binder content. Asphalt binder lubricates the aggregate during compaction and therefore, mixes with high asphalt content will compact easily but may shove under roller loads (TRB, 2000). Rounded aggregate particles.

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Graniterock: Tender Asphalt Mixes - Causes and Cures

2015-3-18  A tenderly designed mix can be compacted if you avoid compaction efforts in the Tender Zone. The Hot Zone provides the greatest opportunity to achieve proper density. Just under the Cool Zone limit is the best place to perform finish rolling. In the Tender Zone, the mix tends to shove and push under the steel wheel.

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Asphaltic Mixture Compaction and Density Validation

2017-3-2  rolling pattern compared to the Asphalt Institute (AI) and Federal Highway Administration (FHWA) best practices rolling pattern. For each project visit, two 1,800-foot sections were tested. Six lots of nuclear density gauge readings were taken in perpendicular and parallel gauge orientations. Each lot included three tests across the

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Asphalt Pavement Best Practices - Home Page Home

2017-2-3  Compacted specimens at low (1 to 3%), medium (4 to 6%) and high (7 to 9%) air void contents Mixtures with the same asphalt content (5%) suffered a 30% of reduction of fatigue life when only air voids were increased by 1% I-R Effect of Paver Stop

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Compaction Guide – Alberta Paving Ltd. – Asphalt Paving ...

2016-3-12  GUIDE TO ASPHALT COMPACTION TABLE OF CONTENTS Unit 1: THE BASICS OF COMPACTION Unit 2: THE FORCES OF COMPACTION Unit 3: FACTORS THAT AFFECT COMPACTION Unit 4: METHODS AND SPECIFICATIONS Unit 5: ROLLING PATTERNS Unit 6: JOINT COMPACTION COMPACTION ISSUES GLOSSARY OF TERMS INTRODUCTION The Cat Paving Products Guide to Asphalt

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Laboratory Mixing and Compaction Temperatures for

2012-2-15  and Compaction Temperatures of Asphalt Binders in Hot Mix Asphalt – Purpose • Identify or develop a simple, rapid, and accurate ... – Refer to other existing practices for GTR -modified asphalt binders. Project Mixing and Compaction Temperatures ... • can best

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Graniterock: Compaction Of Tender Mixes

Some density can be achieved below this temperature range, however the amount of compaction available is limited to roughly 2%. ROLLING PATTERNS To compact tender mixes the contractor has two choices. First you can compact the mix in the upper and lower tender zones where the mix is internally stable and does not move or shove.

get price

Asphaltic Mixture Compaction and Density Validation

2017-3-2  rolling pattern compared to the Asphalt Institute (AI) and Federal Highway Administration (FHWA) best practices rolling pattern. For each project visit, two 1,800-foot sections were tested. Six lots of nuclear density gauge readings were taken in perpendicular and parallel gauge orientations. Each lot included three tests across the

get price

2019 RMACES Handling Tough and Tender Mixes

2019-3-15  Handling Tough and Tender Mixes Dale Starry ... A tough or stiff asphalt mix may require more compaction force ... must be replaced by an attitude to utilize best practices in construction • Low or inconsistent density across the width and along the length of the pavement, including longitudinal ...

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Soil and Asphalt compaction - rangson

2014-10-6  Asphalt binder course Sand Static compaction pneumatic tyred rollers contact pressure range 0,20 - 0,80 MPa BAO1e-14/04 Applications • surface dressing • precompaction of tender asphalt mixes • finish rolling on asphalt • thin granular soil layers • surface finishing on cohesive soil layers

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Investigation of Tender Zone in Compaction of Coarse ...

2019-4-29  Tender hot-mix asphalt mixtures have been observed and experienced by paving contractors for many years. However, during the field compaction of coarse-graded Superpave® mixes, a "tender

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Compacting Hot-Mix Asphalt Pavements: Part II Roads ...

2000-12-28  Editor's note: This is the second installment of a two-part series on asphalt compaction.In the August issue, Scherocman, a consulting engineer in pavement design and construction located in Cincinnati, discussed the importance of compaction and the relationship between density and the air-void content of hot-mix asphalt (HMA) pavement.For an HMA to perform well under traffic, it must be ...

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EVALUATING GEORGIA’S COMPACTION REQUIREMENTS

2015-3-12  Based on the results from the laboratory and field mixes, 50 gyrations with the SGC is recommended to replace 50-blow Marshall compaction for SMA mix designs in Georgia. 17. Key Words: Stone matrix asphalt, compaction, gyratory compactor 18. Distribution Statement: 19. Security Classification (of this report): Unclassified 20. Security ...

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BEST PRACTICES : PAVING AND ROLLING

2019-3-9  BEST PRACTICES : PAVING AND ROLLING. PAVING PRODUCTS ... right for most mixes Fine tune according to mix. Paving by the Numbers STEP 11 •Position Feeder Sensors •Sonic feeder sensors Perpendicular to the live material flow. ... hot, tender mix accentuates mark left by drum edge

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The ABCs of ongitudinaL oints - Ontario Asphalt

for surface course mixes (HL 1 and HL 3) and 60 mm for binder course mixes (HL 8). HL 4 mixes should have a minimum compacted be constructed in times of favourable weather. lift of 50 mm. • Use the smallest NMAS that will do the job – This is more applicable to Superpave mixes where 4.75 mm, 9.5 mm, 12.5 mm and 19

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How to Roll for Bonus, Part 2—Ideas for Perfect Compaction

The 84-inch drum is a bit wider than necessary, but its heavier weight can assist in compaction. Consider the roller with a 54-inch drum width for a moment. If you roll up toward the screed and back for one pass, you’ve covered 54 inches of the 144-inch mat; let’s say that takes three minutes.

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2019 RMACES Handling Tough and Tender Mixes

2019-3-15  Handling Tough and Tender Mixes Dale Starry ... A tough or stiff asphalt mix may require more compaction force ... must be replaced by an attitude to utilize best practices in construction • Low or inconsistent density across the width and along the length of the pavement, including longitudinal ...

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Mixing and Compaction Temperatures of Asphalt Binders

2021-8-6  In 2000, the Asphalt Pavement Environmental Council pub- lished an industry guidance document titled Best Management Practices to Minimize Emissions During Construction also known as EC 101 (38). This document includes several important rec- ommendations regarding mixing and compaction tempera- tures.

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Precision Asphalt Paving: Best Practices for Compaction :

Precision Asphalt Paving: Best Practices for Compaction Attention to detail throughout the process can mean the difference between getting a bonus and being delayed.

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Compacting Hot-Mix Asphalt Pavements: Part II Roads ...

2000-12-28  Editor's note: This is the second installment of a two-part series on asphalt compaction.In the August issue, Scherocman, a consulting engineer in pavement design and construction located in Cincinnati, discussed the importance of compaction and the relationship between density and the air-void content of hot-mix asphalt (HMA) pavement.For an HMA to perform well under traffic, it must be ...

get price

Laboratory Mixing and Compaction Temperatures for

2012-2-15  and Compaction Temperatures of Asphalt Binders in Hot Mix Asphalt – Purpose • Identify or develop a simple, rapid, and accurate ... – Refer to other existing practices for GTR -modified asphalt binders. Project Mixing and Compaction Temperatures ... • can best

get price

Paving Best Practices: Focus on Transportation - Asphalt;

2016-3-7  •Screed assist for tender mixes (on newer models) •Proper set-up for wide width paving •Proper grade reference •Sensor position •Using slope correctly •Consistent Head of Material Planning for Asphalt Compaction • Understand the project • Gather information • Plan the process • Communicate the plan • Verify the results

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References Mixing and Compaction Temperatures of

NCHRP Report 459: Characterization of Modified Asphalt Binders in Superpave Mix Design, Transportation Research Board, National Research Council, Washington, D.C., 2001. 40. Grover, R. â Determining Mixing and Compaction Temperatures of Asphalt Binders Using Zero Shear Viscosity,â RMAUPG Binder Subcommittee Meeting, October 8, 2002. 41.

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EVALUATING GEORGIA’S COMPACTION REQUIREMENTS

2015-3-12  Based on the results from the laboratory and field mixes, 50 gyrations with the SGC is recommended to replace 50-blow Marshall compaction for SMA mix designs in Georgia. 17. Key Words: Stone matrix asphalt, compaction, gyratory compactor 18. Distribution Statement: 19. Security Classification (of this report): Unclassified 20. Security ...

get price

The ABCs of ongitudinaL oints - Ontario Asphalt

for surface course mixes (HL 1 and HL 3) and 60 mm for binder course mixes (HL 8). HL 4 mixes should have a minimum compacted be constructed in times of favourable weather. lift of 50 mm. • Use the smallest NMAS that will do the job – This is more applicable to Superpave mixes where 4.75 mm, 9.5 mm, 12.5 mm and 19

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Field Management Key to Superpave Compaction Roads

2000-12-28  The Superpave mixes can be produced, laid and compacted productively by establishing good field management, communication on the job, continual evaluation of the results, utilization of talents, ingenuity and drive for quality hot-mix asphalt paving in the U.S.

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