Determination of Recycled Asphalt Pavement Content

specializing in the production of large, medium and small concrete mixers, concrete mixing stations, stabilized soil mixing stations and other equipment. It is a heavy industry enterprise integrating R & production and sales.

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.

Get PriceEmail Inquiry

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.

Get PriceEmail Inquiry

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.

Get PriceEmail Inquiry

Determination of Optimum Emulsified Asphalt Content of ...

Determination of Optimum Emulsified Asphalt Content of Cold In-Place Recycled Mixtures . FLH Designation: T 524 . 1. SCOPE 1.1. This standard practice is used to determine the percent of emulsified asphalt and other additives to use for recycling asphalt concrete when using Cold In-Place Recycling (CIR) of bituminous pavements. 2. REFERENCED ...

Get PriceEmail Inquiry

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 ...

Get PriceEmail Inquiry

DETERMINING ASPHALT CONTENT FOR RECYCLED

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.

Get PriceEmail Inquiry

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.

Get PriceEmail Inquiry

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 ...

Get PriceEmail Inquiry

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 ...

Get PriceEmail Inquiry

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

Get PriceEmail Inquiry

Approach for Determination of Maximum Reclaimed Asphalt ...

May 26, 2020  Reclaimed asphalt pavement (RAP), commonly generated from the millings of damaged roads, contains recyclable asphalt and aggregate. Polymer-modified asphalt (PMA) binders have had proven success in mitigating rutting and cracking in asphalt pavements. However, benefits associated with PMA binder may be reduced by aged and more brittle RAP binder.

Get PriceEmail Inquiry

Characterization of HMA mixtures containing high recycled ...

Asphalt pavements are the most recycled product in America. A reclaimed asphalt pavement, which is commonly called RAP, is a HMA mixture containing aggregates and asphalt cement binder which has been removed and reclaimed from an existing pavement. Properly processed RAP consists of well-graded aggregates coated with asphalt cement binder.

Get PriceEmail Inquiry

PROVISIONAL METHOD OF TEST FOR MIXTURE DESIGN AND

2. Preparing pavement samples 3. Residual asphalt determination for emulsified asphalt 4. Asphalt binder selection and foaming parameters for foamed asphalt 5. Optimum moisture content and maximum density determination 6. Optimum asphalt recycling agent content 7. Obtaining production samples for quality tests 8. Quality testing of p roduction ...

Get PriceEmail Inquiry

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.

Get PriceEmail Inquiry

Compressive Strengths of Pavement Recycling Materials and ...

Jun 21, 2021  Compressive Strengths of Pavement Recycling Materials and New Approach for Cement Content Determination. ... crushed rock-blended reclaimed asphalt pavement; and a mixture of crushed rock, reclaimed asphalt pavement and lateritic soil). The strength was evaluated through a series of unconfined compression tests in the laboratory.

Get PriceEmail Inquiry

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

Jun 08, 2021  Influence of Reclaimed Asphalt Pavement (RAP) Aggregate Fraction on the Determination of Active Binder Content. Gradation plays significantly towards the amount of active binder in hot mix recycling, as a function of exposed specific surface of aggregates.

Get PriceEmail Inquiry

Determination of percent working binder in recycled ...

Determination of percent working binder in recycled asphalt pavement materials. / Al-Qadi, Imad L; Carpenter, S. H.; Roberts, G. L.; Ozer, Hasan. Efficient Transportation and Pavement Systems: Characterization, Mechanisms, Simulation, and Modeling - Proceedings of the 4th International Gulf Conference on Roads. 2008. p. 505-516 (Efficient Transportation and Pavement Systems:

Get PriceEmail Inquiry

Influence of a Rejuvenator on Homogenization of an Asphalt ...

May 14, 2021  The trial road section was divided into four parts, each of which differed in the percentage content of the rejuvenator (0%, 0.7%, 1.0%, and 1.3%) in proportion to the asphalt content in granulate. This trial asphalt pavement was made in the Silesian Voivodship near Czestochowa city. The process of core sample drilling can be seen in Figure 7 ...

Get PriceEmail Inquiry

Asphalt Binder Extraction Protocol for Determining Amount ...

content mixes were evaluated, the measured asphalt content was found to be more than 0.3% lower than the actual asphalt content. Therefore, the tolerances may need to be increased when high recycled content mixes are used. • For the ignition method, the actual asphalt content was underestimated by approximately 0.1%.

Get PriceEmail Inquiry

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 ...

Get PriceEmail Inquiry

Asphalt Binder Extraction Protocol for Determining Amount ...

content mixes were evaluated, the measured asphalt content was found to be more than 0.3% lower than the actual asphalt content. Therefore, the tolerances may need to be increased when high recycled content mixes are used. • For the ignition method, the actual asphalt content was underestimated by approximately 0.1%.

Get PriceEmail Inquiry

Determination of Structural Strength of Foamed Asphalt Layers

Determination of Structural Layer Coefficient for Roadway Recycling Using Foamed Asphalt ... A Wirtgen Model WR2500 pulverizer was used to introduce foamed asphalt to the recycled asphalt pavement. A layer of Type II Portland Cement as wide as the pulverizer was placed on the ... from the difference in foamed asphalt content, the most obvious ...

Get PriceEmail Inquiry

(PDF) Use of Impact Resonance Test for Determination of ...

Use of Impact Resonance Test for Determination of Optimum Rejuvenator Content for Recycled Asphalt Pavements September 2015 Conference: 1st Europe Central Asia Regional Congress, Istanbul, Turkey

Get PriceEmail Inquiry

The Nuclear Asphalt Content Gauge FHWA

Determination of the moisture content by extraction will yield a percentage that can then be subtracted from the asphalt content reading to provide a corrected asphalt content. The sample size may vary according to the gauge, but generally, the sample should fill the test pan as illustrated in figure 2.

Get PriceEmail Inquiry

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

Get PriceEmail Inquiry

EVALUATION OF HIGH PERCENTAGE RECYCLED ASPHALT

Recycled materials offer viable solutions to the concern, which is beneficial to both environment and economy. The Federal Highway Administration (FHWA) estimates that 100.1 million tons of Hot Mixed Asphalt (HMA) is scraped each year [Cosentino 2001]. Recycled Asphalt Pavement (RAP) is one of the most commonly used recycled materials.

Get PriceEmail Inquiry

Cold Recycled Asphalt Mix Design - eng.auburn

Both sections have a four-inch cold recycled layer and a one-inch Superpave mix overlay. For the CIR mixture, the foamed asphalt content was 1.8% and the total water content was 4.9%. For the CCPR mixture, the foamed asphalt content was 2.2% by weight of dry RAP, and the total water content was 7.2% by weight of dry RAP.

Get PriceEmail Inquiry

Is That Road Made of Recycled Asphalt? If it’s Done Right ...

Oct 01, 2019  The rapid growth we see in recycled pavements is dramatically outpacing consumer product recycling trends, which showed an increase of less than 1% in recent years, according to the EPA, due in part to a 3% drop in plastic bottle recycling in 2017. Reclaimed asphalt pavement use, on the other hand, is on the upswing, up 36% from only 10 years ago.

Get PriceEmail Inquiry

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.

Get PriceEmail Inquiry

Determination of percent working binder in recycled ...

The testing was not able to determine an amount of working binder. However, when investigating the mix design method, it was found that the RAP mixes were behaving as if 100% of the binder was working. It was also determined that double bumping the asphalt grade softened the mix.

Get PriceEmail Inquiry

References Improved Mix Design, Evaluation, and ...

32. Mix Design Methods for Asphalt Concrete and Other Hot-Mix Types, Manual Series No. 2, 6th ed., Asphalt Institute (1993). 33. Abdulshafi, O., B. Kedzierski, and M. G. Fitch, Determination of Recycled Asphalt Pavement (RAP) Content in Asphalt Mixes Based on Expected Mixture Durability, Final Report, Ohio State University (2002) 71 pp. 34.

Get PriceEmail Inquiry

Recommendation of RILEM TC237-SIB: protocol for ...

Oct 18, 2018  Reclaimed asphalt (RA) is currently one of the most recycled materials in the pavement construction industry [].This is strictly associated with the need of implementing efficient and effective maintenance plans of the existing road network while preserving precious and

Get PriceEmail Inquiry

Practice and Performance of Cold In-Place Recycling and ...

Cold in-place recycling (CIR) is a process in which 3 to 4 inches of the existing asphalt pavement layers are pulverized, mixed with a recycling agent, and repaved in place.

Get PriceEmail Inquiry