Structural Coefficients of Cold Central-Plant Recycled Asphalt

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  • Generalized Methodology to Develop Mechanistically

    The layer coefficients influence the layer thicknesses and consequently the structural capacity of pavements. Therefore, it is critical to determine reliable mechanistically informed a-values. A set of 18 commonly used asphalt mixtures in New Hampshire was selected for investigation including different types of hot mix and cold central plant

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  • 15 Years of Findings from the NCAT Test Track

    – Structural Coefficient Recalibration – Perpetual Pavements – Cold Central Plant Recycling (CCPR) • 2015 Test Track and MnROAD Partnership . General Findings – Mix Design • ALDOT asphalt coefficients were set in 1990 – No changes since then . AASHO HMA Coefficients Loop.

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  • I-81 In-Place Pavement Recycling Project

    reclamation (FDR), cold in-place recycling (CIR), and cold central-plant recycling (CCPR). This project marked the first time in the United States that these three recycling techniques were combined in one project on the interstate system. Materials for both the CIR and CCPR were produced using hydraulic cement and foamed asphalt.

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  • Structural performance and sustainability assessment of

    Most agencies use Structural Layer (a) Coefficients between 0.30 - 0.38 (Recent research indicates values from 0.36-0.44 may be more appropriate) Issues Addressed When used in place of an asphalt overlay, CCPR addresses the same distresses as the overlay

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  • Cold Central Plant Recycling (CCPR) Project - Flexible

    Feb 06, 2018 · Cold Central Plant Recycling (CCPR) Status: Complete Project Start Date: February 6, 2018 Project End Date: December 31, 2020 Project summary. State and local agencies are increasingly using Recycled Asphalt Pavement (RAP) material to construct structural layers of asphalt pavements for low-volume roadways.

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  • Structural Coefficients of Cold Central-Plant Recycled

    The structural layer coefficient of the CCPR material was estimated to range from 0.36 to 0.39 based on falling weight deflectometer testing. The temperature-normalized asphalt mixture/CCPR modulus of Section S12 was found to increase with

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  • FHWA Pavement Sustainability Initiatives

    • Structural coefficients • Quantifiable benefits/ • Cold Recycling (CR) is a asphalt pavement rehabilitation technique that typically consists of rehabilitating 2-6 inches of the existing pavement. CR Options include: –Cold In-Place (CIR) or –Cold Central Plant Recycling (CCPR) –w/Surface Overlay . 7 Recycled Program

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  • 15 Years of Findings from the NCAT Test Track

    – Structural Coefficient Recalibration – Perpetual Pavements – Cold Central Plant Recycling (CCPR) • 2015 Test Track and MnROAD Partnership . General Findings – Mix Design • ALDOT asphalt coefficients were set in 1990 – No changes since then . AASHO HMA Coefficients Loop.

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  • Cold Central Plant Recycled Asphalt Pavements in High

    Oct 05, 2018 · Cold central plant recycling (CCPR) is gaining wider use in the U.S. for rehabilitating existing asphalt pavements or for new construction. Although it is used widely in lower traffic volume situations, CCPR use in high volume pavements remains an open question when considering its structural capacity and expected performance.

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  • Microstructure and performance characteristics of cold

    Jan 01, 2020 · Cold recycling of asphalt pavement uses asphalt emulsion or foamed asphalt (FA) to mix the RAP at room temperature, which can take up 60%–90% of RAP and used as subgrade or in asphalt pavement structure, . Cold recycling of asphalt pavement can also be divided into two types: cold in-place recycling (CIR) and cold central plant recycling (CCPR).

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  • I-81 In-Place Pavement Recycling Project

    reclamation (FDR), cold in-place recycling (CIR), and cold central-plant recycling (CCPR). This project marked the first time in the United States that these three recycling techniques were combined in one project on the interstate system. Materials for both the CIR and CCPR were produced using hydraulic cement and foamed asphalt.

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  • PennDOT RECYCLING MATERIAL FACT SHEET Reclaimed …

    342 Cold Recycled Asphalt Base Course, Central Plant Mix 344 Full Depth Reclamation 413 Superpave Mixture Design, Standard and RPS Construction of Plant-mixed Asphalt • A more accurate determination of the structural layer coefficient for plant recycled cold mix

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  • Cold Recycling of Asphalt Pavements - Auburn University

    The structural layer coefficient for the CIR material was calculated as 0.39. The structural layer coefficient for the CCPR material was calculated to have a likely range of 0.37 to 0.44. Laboratory testing showed that the performance of the CCPR and CIR materials is expected to be similar.

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  • Structural Study of Cold Central Plant Recycling Sections

    The strain from Section S12 (having a 4-in asphalt overlay and a cement-stabilized foundation) was approximately 69% and 49% less than the strain levels for Sections N3 and N4, respectively, at 68°F. The structural layer coefficient of the CCPR material was estimated to range from 0.36 to 0.39 based on falling weight deflectometer testing.

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  • Cold Mix Asphalt | All States Materials Group

    Benefits of All States Materials Group's Cold Mix Asphalt. Flexible but strong pavement materials resistant to rutting, cracking and moisture damage. Smooth and quiet riding surfaces. Can be mixed at a central plant or on-site in portable plants at remote locations. Cold mix asphalt minimizes transportation and material costs.

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  • Structural study of cold central plant recycling sections

    The three test sections, having a length of 200 ft each, consisted of two different asphalt overlay thicknesses placed on top of a five-in cold central-plant recycled base. One of the three sections also contained a cement-stabilized base designed to simulate a full-depth reclaimed layer.

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  • Cold In-Place Recycling - PPRA

    Cold In-Place Recycling. A cost-effective, long-lasting, greener alternative to conventional maintenance and rehabilitation techniques. Cold In-place recycling (CIR) is a process that cold mills and recycles the top 2-5 inches of asphalt using a continuous train operation. Through the complete reuse of existing material, CIR greatly reduces

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  • Structural Study of Cold Central Plant Recycling Sections

    The strain from Section S12 (having a 4-in asphalt overlay and a cement-stabilized foundation) was approximately 69% and 49% less than the strain levels for Sections N3 and N4, respectively, at 68°F. The structural layer coefficient of the CCPR material was estimated to range from 0.36 to 0.39 based on falling weight deflectometer testing.

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  • Fatigue characteristics of in-service cold recycling

    Dec 20, 2018 · 1. Introduction. Cold central-plant recycling (CCPR) is a cost-effective technology in which recycled asphalt pavement is blended with asphalt emulsion, new aggregate (if necessary), cement and water without heat in a central plant to produce an engineered recycled mixture, .In China, CCPR mixture has been increasingly utilized in the pavement rehabilitation for its recycled use of pavement

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  • Summary | Material Properties of Cold In-Place Recycled

    1 Pavement recycling techniques, including cold in-place recycling (CIR), cold central-plant recycling (CCPR), and full-depth reclamation (FDR), are effective techniques for rehabilitat- ing existing pavements or constructing new pavements while reducing construction costs, environmental impacts, and construction time.

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