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determination of recycled asphalt pavement (rap)

determination of recycled asphalt pavement (rap)

Determination of Recycled Asphalt Pavement (RAP) Content ...

Determination of Recycled Asphalt Pavement (RAP) Content in Asphalt Mixes Based on Expected Mixture Durability Prepared in Cooperation with The Ohio Department of Transportation and The U.S. Department of Transportation, Federal Highway Administration Final Report by Osama Abdulshafi, Ph.D., P.E. Bozena Kedzierski, M.S. Michael G. Fitch, M.S., P.E.

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DETERMINATION OF RECYCLED ASPHALT PAVEMENT (RAP)

determination of recycled asphalt pavement (rap) content in asphalt mixes based on expected mixture durability Decreasing supplies of locally available quality aggregate in some areas, growing concern over waste disposal, and the rising cost of asphalt binder have resulted in greater use of recycled asphalt pavement (RAP) for new road construction.

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DETERMINING ASPHALT CONTENT FOR RECYCLED ASPHALT

DETERMINING ASPHALT CONTENT FOR RECYCLED ASPHALT PAVEMENT (RAP) MATERIALS Final Report PROJECT 304-221 by Gary Thompson Asphalt Pavement Association of Oregon 5240 Gaffin Rd. SE Salem, OR 97301 for Oregon Department of Transportation Research Unit 200 Hawthorne SE, Suite B-240 Salem OR 97301-5192 and Federal Highway Administration Washington, D.C.

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Determining the optimum amount of recycled asphalt ...

Dec 20, 2019  The new percentage of asphalt binder content for mixtures containing recycled asphalt pavement (RAP), described as a percentage of total mixture weight, can be calculated with the following equation: : (4) Pb N = Pb T-Pb R ∗ TR where Pb N is the new percentage of asphalt binder content (%); Pb T is the optimum asphalt binder content (%); Pb R ...

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Determining the optimum amount of recycled asphalt ...

In this research, Recycled asphalt pavement (RAP) has been applied in warm stone matrix asphalt mixture. • The warm stone matrix asphalt mixture is made by two warm mix additives including sasobit and zycotherm. • A computerized programming has been developed to determine the flow number of different types of the mixture by using dynamic ...

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1815 DETERMINATION of RAP AGGREGATE BULK SPECIFIC

Apr 17, 2007  1815 DETERMINATION of RAP AGGREGATE BULK SPECIFIC GRAVITY 1815.1 GENERAL This procedure is intended for use in determining the bulk specific gravity of the aggregates in a recycled asphalt pavement (RAP). This procedure is being used as an alternate to AASHTO T84 (Lab Manual 1205) and AASHTO T85 (Lab Manual 1204). 1815.2 SUMMARY of METHOD

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Finite Element Simulations of Recycled Asphalt Pavement ...

Recycled asphalt pavement (RAP) has increasingly been used as a base material for highway construction as a sustainable solution. Due to the existence of asphalt, 100 % RAP typically has low ...

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Reclaimed Asphalt Pavement (RAP) as a Clean Fill Material

190: “Reclaimed Asphalt Pavement (RAP) Stockpile Emissions and Leachate.”) In general, it is acceptable for RAP to be used as a road material — as part of the base, recycled back into pavement, etc. — both from a federal and state perspective.

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DETERMINATION OF RECYCLED ASPHALT PAVEMENT (RAP) CONTENT ...

determination of recycled asphalt pavement (rap) content in asphalt mixes based on expected mixture durability Decreasing supplies of locally available quality aggregate in some areas, growing concern over waste disposal, and the rising cost of asphalt binder have resulted in greater use of recycled asphalt pavement (RAP) for new road construction.

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Determination of Optimum Emulsified Asphalt Content of ...

Sampling and Processing of Recycled Asphalt Pavement (RAP) Materials 3.1.1. Obtain cores from the areas to be recycled. Depending upon project length and existing pavement thickness, develop a coring plan that will provide at least 350 pounds of RAP for each mix design.

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1815 DETERMINATION of RAP AGGREGATE BULK SPECIFIC

Apr 17, 2007  1815 DETERMINATION of RAP AGGREGATE BULK SPECIFIC GRAVITY 1815.1 GENERAL This procedure is intended for use in determining the bulk specific gravity of the aggregates in a recycled asphalt pavement (RAP). This procedure is being used as an alternate to AASHTO T84 (Lab Manual 1205) and AASHTO T85 (Lab Manual 1204). 1815.2 SUMMARY of METHOD

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New Jersey Department of Environmental Protection

Recycled Asphalt Pavement (RAP): Recycled asphalt pavement (RAP) shall mean asphalt millings (the material produced from the milling of roads before repaving) and pieces of asphaltic roadway pavement removed from the roadway surface or subbase, or from other asphalt-paved surfaces such as parking lots. RAP does not include other Class

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DETERMINATION OF USABLE RESIDUAL ASPHALT BINDER

For current recycled mix designs, the Illinois Department of Transportation (IDOT) assumes 100% contribution of working binder from Recycled Asphalt Pavement (RAP) materials when added to Hot Mix Asphalt (HMA). However, it is unclear if this assumption is correct and whether some binder may potentially be acting as “black rock,” and not

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EVALUATION OF HIGH PERCENTAGE RECYCLED ASPHALT

recycled materials. RAP is the term given to removed and/or reprocessed pavement materials containing asphalt and aggregates. RAP is generated when asphalt pavements are removed for reconstruction, resurfacing, or to obtain access to buried utilities. RAP consists of high-quality, well-graded aggregates coated by asphalt cement [RMRC 2008].

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Reclaimed Asphalt Pavement (RAP) as a Clean Fill Material

190: “Reclaimed Asphalt Pavement (RAP) Stockpile Emissions and Leachate.”) In general, it is acceptable for RAP to be used as a road material — as part of the base, recycled back into pavement, etc. — both from a federal and state perspective.

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Reclaimed Asphalt Pavement (RAP)

Reclaimed asphalt pavement (RAP) can be used as an aggregate in the hot recycling of asphalt paving mixtures in one of two ways. The most common method (conventional recycled hot mix) involves a process in which RAP is combined with virgin aggregate and new asphalt cement in a central mixing plant to produce new hot mix paving mixtures.

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Finite Element Simulations of Recycled Asphalt Pavement ...

Recycled asphalt pavement (RAP) has increasingly been used as a base material for highway construction as a sustainable solution. Due to the existence of asphalt, 100 % RAP typically has low ...

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AN OVERVIEW OF RECLAIMED ASPHALT PAVEMENT (RAP)

RECLAIMED ASPHALT PAVEMENT Introduction of reclaimed asphalt pavement In the report of Collins and Ciesielski (1994), RAP is a product of asphalt pavement removal and is the primary recycled material used in asphalt concrete. Milling machines break down the existing asphalt concrete pavement into discrete particles as shown in Figure 1 to

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6 Benefits of Recycling Asphalt - Richfield Blacktop

Jul 15, 2020  What is Asphalt Recycling? Asphalt recycling is the process of reclaiming and reprocessing used asphalt materials to create new and usable products. As stated by the Federal Highway Administration: “Reclaimed asphalt pavement (RAP) describes removed and/or reprocessed pavement. materials containing asphalt and aggregates.

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What is Recycled Asphalt? Pavement Recyclers

Jul 11, 2018  Recycled asphalt, or reclaimed asphalt pavement (RAP), is reprocessed pavement containing asphalt and aggregates. The United States Federal Highway Association (FHA) notes these underlying materials are created when asphalt pavements are removed for various activities, including: Reconstruction. Resurfacing. Gaining access to buried utilities.

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Structural Contribution of Cold In-Place Recycling Base Layer

Cold in-place recycling (CIR) of asphalt pavements is a process that has successfully been used for many years [].CIR is a major pavement rehabilitation treatment, consisting of milling the top 50–75 mm of the asphalt concrete (AC) layer followed by in-place cold mixing with asphalt emulsion and stabilizing agents (i.e., Portland cement or hydrated lime), and compacted using traditional ...

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Detection of Recycled Asphalt Pavement (RAP) in

Jun 01, 2004  to validate the forensic RAP detection and quantification methods developed in this study for a broader range of materials, including polymer-modified asphalts 17. Key Words RAP, Recycled, Reclaimed, Pavement, Bituminous, Asphalt, Quality Assurance 18. Distribution Statement No restrictions. This document is available to the public through the

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Determining asphalt content for recycled asphalt pavement ...

The State of Oregon uses significant amounts of Recycled Asphalt Pavement (RAP) in dense-graded mixes on State highways. The design process for these mixes relies on accurately knowing the amount of asphalt cement in the RAP materials being used.

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Detection of Recycled Asphalt Pavement (RAP) in

Jun 01, 2004  to validate the forensic RAP detection and quantification methods developed in this study for a broader range of materials, including polymer-modified asphalts 17. Key Words RAP, Recycled, Reclaimed, Pavement, Bituminous, Asphalt, Quality Assurance 18. Distribution Statement No restrictions. This document is available to the public through the

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DETERMINATION OF USABLE RESIDUAL ASPHALT BINDER

For current recycled mix designs, the Illinois Department of Transportation (IDOT) assumes 100% contribution of working binder from Recycled Asphalt Pavement (RAP) materials when added to Hot Mix Asphalt (HMA). However, it is unclear if this assumption is correct and whether some binder may potentially be acting as “black rock,” and not

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PennDOT RECYCLING MATERIAL FACT SHEET Reclaimed

Reclaimed asphalt pavement (RAP) is the term given to removed and/or reprocessed pavement materials containing asphalt and aggregates. These materials are generated when asphalt pavements are removed for reconstruction, rehabilitations, or resurfacing. Recycling of asphalt pavements dates

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EVALUATION OF HIGH PERCENTAGE RECYCLED ASPHALT

recycled materials. RAP is the term given to removed and/or reprocessed pavement materials containing asphalt and aggregates. RAP is generated when asphalt pavements are removed for reconstruction, resurfacing, or to obtain access to buried utilities. RAP consists of high-quality, well-graded aggregates coated by asphalt cement [RMRC 2008].

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Finite Element Simulations of Recycled Asphalt Pavement ...

Recycled asphalt pavement (RAP) has increasingly been used as a base material for highway construction as a sustainable solution. Due to the existence of asphalt, 100 % RAP typically has low ...

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DETERMINING ASPHALT CONTENT FROM ASPHALT

II. Do not use the same sample used for moisture determination as used for asphalt content determination. Table 2 Required Weight of Recycled Material Sample Recycled Material Type Required Weight of Sample, g Reclaimed Asphalt Pavement (RAP)1 1,000–4,000 Recycled Asphalt Shingles (RAS)2 500–700 1. Refer to Table 1 for required sample ...

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Reclaimed Asphalt Pavement (RAP)

Asphalt Content: The asphalt content of most old pavements will comprise approximately 3 to 7 percent by weight and 10 to 20 percent by volume of the pavement. Due to oxidation aging, the asphalt cement has hardened and consequently is more viscous and has lower penetration values than the virgin asphalt

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Reclaimed Asphalt Pavement (RAP)

Reclaimed asphalt pavement (RAP) can be used as an aggregate in the hot recycling of asphalt paving mixtures in one of two ways. The most common method (conventional recycled hot mix) involves a process in which RAP is combined with virgin aggregate and new asphalt cement in a central mixing plant to produce new hot mix paving mixtures.

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Estimation of Blending of Rap Binder in a Recycled Asphalt ...

Aug 08, 2018  Many of the recycled asphalt pavement (RAP) mix design methods assume 100% blending of the RAP binder with virgin binder to estimate the properties of the binder in the RAP mix. However, 100% blending is not practically achieved.

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MARSHALL MIX DESIGN METHOD FOR ASPHALTIC

3.2 Reclaimed Asphalt Pavement (RAP) - RAP consists of salvaged, milled, pulverized, broken, or crushed asphalt pavement. RAP contains “RAP aggregate” and bituminous materials hereinafter referred to as “RAP Binder”. The gradation of the RAP material shall conform to

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Influence of Reclaimed Asphalt Pavement (RAP) Aggregate ...

Jun 04, 2021  Gradation plays significantly towards the amount of active binder in hot mix recycling, as a function of exposed specific surface of aggregates. Existing procedures do not explicitly consider gradation of the Reclaimed Asphalt Pavement (RAP) mixture in the determination

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Reclaimed Asphalt Pavement - an overview ScienceDirect ...

James G. Speight PhD, DSC, in Asphalt Materials Science and Technology, 2016 1.2.1.10 Reclaimed Asphalt Pavement. The use of reclaimed asphalt pavement (also known as recycled asphalt pavement, RAP) material is increasing as local, state, and federal transportation agencies make more efficient use of their resources.RAP material is generated when old, damaged pavement materials

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Structural Contribution of Cold In-Place Recycling Base Layer

Cold in-place recycling (CIR) of asphalt pavements is a process that has successfully been used for many years [].CIR is a major pavement rehabilitation treatment, consisting of milling the top 50–75 mm of the asphalt concrete (AC) layer followed by in-place cold mixing with asphalt emulsion and stabilizing agents (i.e., Portland cement or hydrated lime), and compacted using traditional ...

get price