Performance Based Asphalt Mixture Design Pbd For Arkansas

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Performance Based Asphalt Mixture Design Pbd For Arkansas

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Author :
language : en
Publisher:
Release Date : 2022

Performance Based Asphalt Mixture Design Pbd For Arkansas written by and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 2022 with Pavements categories.

The Development Of Initial Asphalt Mixture Acceptance Criteria Using The Scb Test And The I Fit Test

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Author : Nathan Delman Parnell
language : en
Publisher:
Release Date : 2019

The Development Of Initial Asphalt Mixture Acceptance Criteria Using The Scb Test And The I Fit Test written by Nathan Delman Parnell and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 2019 with Asphalt concrete categories.

Cracking has become the primary asphalt pavement distress in Arkansas. Arkansas along with other states have implemented a test to measure rutting resistance. This paper presents research to implement a cracking resistance test to further modify the Superpave volumetric asphalt mixture design method in Arkansas. The Illinois Flexibility Index Test (I-FIT) was the test chosen to analyze for this research. Two aging methods were tested, a short term oven aging (AASHTO R30 ST) and a long term oven aging (NCAT) method. Six asphalt mixtures were selected to be tested. The mixtures testes were recreated from Arkansas Department of Transportation (ARDOT) projects that had been paved and distress surveys completed on. The mixtures fell into three categories, Poor, Fair, and Good cracking performance. After testing in the lab, the Flexibility Index (FI) values statistically grouped into three groups. The results showed that higher FI values had higher variability. Using the results from this research, recommendations are made to Arkansas on a minimum FI value to be used for acceptance and which aging protocol to use.

Development Of A Rational Mix Design Method For Asphalt Bases And Characteristics Of Arkansas Asphalt Mixtures

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Author : Miller C. Ford
language : en
Publisher:
Release Date : 1985

Development Of A Rational Mix Design Method For Asphalt Bases And Characteristics Of Arkansas Asphalt Mixtures written by Miller C. Ford and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 1985 with Pavements, Asphalt categories.

Mixture Design And Performance Based Specifications For Cold Patching Mixtures

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Author : Vanessa I. Rosales-Herrera
language : en
Publisher:
Release Date : 2007

Mixture Design And Performance Based Specifications For Cold Patching Mixtures written by Vanessa I. Rosales-Herrera and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 2007 with Asphalt categories.

The Superpave Mix Design System Manual Of Specifications Test Methods And Practices

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Author : Edward T. Harrigan
language : en
Publisher: Strategic Highway Research Program (Shrp)
Release Date : 1994

The Superpave Mix Design System Manual Of Specifications Test Methods And Practices written by Edward T. Harrigan and has been published by Strategic Highway Research Program (Shrp) this book supported file pdf, txt, epub, kindle and other format this book has been release on 1994 with Technology & Engineering categories.

The final product of the Strategic Highway Research Program (SHRP) Asphalt Research Program is the SUPERPAVE (registered trademark) mix design system for new construction and overlays. This system employs a series of new performance-based specifications, test methods, and practices for material selection, accelerated performance testing, and mix design. This report documents these new specifications and procedures in a format suitable for eventual American Association of State Highway and Transportation Officials (AASHTO) standardization.

Performance Based Mix Design And Field Quality Control For Asphalt Aggregate Overlays

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Author : Jorge B. Sousa
language : en
Publisher:
Release Date : 1996

Performance Based Mix Design And Field Quality Control For Asphalt Aggregate Overlays written by Jorge B. Sousa and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 1996 with Pavements, Asphalt categories.

Mixture Design Manual And Performance Based Specifications For Cold Patching Mixtures

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Author : Vanessa I. Rosales-Herrera
language : en
Publisher:
Release Date : 2008

Mixture Design Manual And Performance Based Specifications For Cold Patching Mixtures written by Vanessa I. Rosales-Herrera and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 2008 with Asphalt categories.

Hot Mix Asphalt Materials Mixture Design And Construction

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Author : Freddy L. Roberts
language : en
Publisher: National Asphalt Pavement Association
Release Date : 1991

Hot Mix Asphalt Materials Mixture Design And Construction written by Freddy L. Roberts and has been published by National Asphalt Pavement Association this book supported file pdf, txt, epub, kindle and other format this book has been release on 1991 with Technology & Engineering categories.

Reacted And Activated Rubber Rar Modified Dense Graded Asphalt Mixtures Design And Performance Evaluation

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Author : Sampat Kedarisetty
language : en
Publisher:
Release Date : 2018

Reacted And Activated Rubber Rar Modified Dense Graded Asphalt Mixtures Design And Performance Evaluation written by Sampat Kedarisetty and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 2018 with Asphalt categories.

The modification of asphalt mixtures with rubber in the conventional process includes specialized equipment for mixing and storage and concurrently necessitates reheating prior to use. Reacted and Activated Rubber (RAR) is a novel rubber-based asphalt mixture modifier that can be added into the mixture matrix without the complexities associated with wet mixing. The objective of this study was to design and assess the performance of RAR-modified dense-graded asphalt mixtures against key pavement distresses. Furthermore, the performance of RAR-modified mixtures was compared to the unmodified and commercially available rubber-modified asphalt-based mixtures. Two levels of RAR dosage at 2 and 4 % by total weight of mix were included with two different base binders. Four performance characteristics were analyzed: resistance to rutting at high temperatures, failure by fatigue, fracture energy, and susceptibility to moisture damage. Increased rut resistance and higher fatigue lives were observed for higher RAR contents. Statistical analyses revealed insignificant changes in fracture energy among the different mixtures, and all the mixtures were found to be resistant to moisture damage. RAR was concluded as a compatible promising rubber modifier with a significant potential to improve resistance of asphalt pavements against distresses and capable of providing extended life cycles. Because RAR showed significant improvement in the performance of the dense-graded asphalt mixtures, this study recommended expanding the scope of utilizing the RAR materials with other aggregate gradations both at the laboratory and field levels in future.

Innovative Assessment Tests And Indicators For Performance Based Asphalt Mix Design

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Author : Hamza Alkuime
language : en
Publisher:
Release Date : 2019

Innovative Assessment Tests And Indicators For Performance Based Asphalt Mix Design written by Hamza Alkuime and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 2019 with Pavements, Asphalt categories.

Asphalt mixes are designed to provide adequate resistance to various distresses including cracking, rutting, and moisture damage. Recently, more efforts are directed towards including performance assessment tests during the design and production of asphalt mixes. Performance-Engineered Mix Design (PEMD) or Balanced Mix Design (BMD) is a new and innovative design approach that incorporates performance assessment tests to optimize the design of asphalt mixes to provide adequate performance. Although transportation agencies are motivated to implement the PEMD approach, several research knowledge gaps and concerns need to be addressed before PEMD successful implementation. This research study aims to advance, develop, and implement performance-engineered design approach and specifications to extend the service life of asphalt pavements.The first phase of this research developed and evaluated a new and innovative monotonic cracking performance indicator called Weibull Cracking Resistance Index (WeibullCRI). The proposed indicator describes the entire load-displacement curve, which overcomes the limitations of the existing performance indicators. First, WeibullCRI was examined using an extensive laboratory evaluation of 16 different asphalt mixes. The results indicated that WeibullCRI was sensitive to variation in binder content and binder PG and the results were in good agreement with the expected cracking resistance based on the composition of the studied mixes. In addition, WeibullCRI had low variability in test results and higher number of various statistical groups. Next, the applicability of WeibullCRI as a unified approach to analyze the results of various monotonic assessment tests was investigated using data generated by other researchers and reported in the literature. The results indicated that WeibullCRI is able to interpret the testing results of various monotonic performance assessment tests (i.e., IDT- intermediate temperature, Semi-Circle Bending [SCB]- intermediate temperature, SCB-low temperature, Disk-Shaped Compact Tension [DCT], and Simple Punching Shear Test [SPST]) and various displacement measurement methods (i.e., actuator vertical displacement and Crack Mouth Opening Displacement [CMOD]). WeibullCRI was also sensitive to variation in test conditions (i.e., specimen notch depth, thickness, and air void content) and mix composition proportions (i.e., binder content, binder grade, aggregate type, NMAS, aging, rejuvenator dosages, and Recycled Asphalt Pavement [RAP] materials).The second phase of this study reviewed and evaluated the current monotonic cracking performance assessment tests and indicators including the developed WeibullCRI used to assess asphalt mix resistance to cracking. In this phase, the testing requirements of various test standards, key publications, concepts, calculation methods, physical meaning, and advantages and disadvantages of various performance indicators were reviewed. Then, the study investigated the validity of the most promising testing standards and indicators. Three testing standards and 12 performance indicators were considered. Several aspects were examined including 1) investigate the fundamental meaning of the variation in the load-displacement curve in terms of the change in mix resistance to cracking, 2) sensitivity of performance indicators to mix compositions, 3) variability in test results, 4) number of various statistical groups, 5) correlation between various performance indicators, 6) direct correlation between laboratory results of monotonic performance tests and indicators with the observed field cracking, and 7) ability to develop PEMD specifications. A comprehensive laboratory investigation was conducted using 33 different asphalt mixes included six Laboratory Mixed-Laboratory Compacted (LMLC) and 10 Plant Mixed-Laboratory Compacted (PMLC) asphalt mixes, and 17 field projects with known cracking performance. The results showed that WeibullCRI calculated from the IDT test to have the lowest test variability, maximum number of Tukey's honestly significant difference (HSD) groups, and have excellent correlation with cyclic cracking resistance assessment indicators as compared to the other monotonic performance indicators. In addition, the results demonstrated that there was no direct correlation between all monotonic performance indicators and the observed field cracking performance, therefore an alternative approach was proposed, evaluated, and validated to develop performance thresholds for the selected performance indicators. Three pass/fail cracking performance thresholds were proposed for WeibullCRI to distinguish between asphalt mixes with good, fair, and poor cracking resistance using the proposed approach.The third phase of this study focused on the development and evaluation of a new cyclic cracking assessment test called Multi-Stage Semi-circle bending Dynamic (MSSD). The test offers advantages over the available monotonic and dynamic cracking assessment tests and addresses major concerns to implement the PEMD (i.e., performance test validity, complex specimen preparation, and testing time). The developed MSSD test simulates the repeated loading (cyclic) in a reasonable testing time (less than 9 hours per test regardless of mix type), has a fixed loading sequence that works for mixes with different characteristics (e.g., mix composition, percent air void content, thickness, etc.), and utilizes testing equipment and specimen geometry similar to that used in monotonic tests. The laboratory evaluation results showed that the proposed test and its derived performance indicators were sensitive to mix composition and had lower variability compared to other dynamic tests. In addition, the MSSD performance indicators correlated well with the observed cracking performance in the field and were able to distinguish between projects with good and poor resistance to cracking. Based on the evaluation results, three pass/fail cracking performance thresholds were proposed to distinguish between asphalt mixes with good, fair, and poor resistance to cracking.The fourth phase of this research examined the most promising tests and performance indicators to evaluate the resistance of asphalt mixtures to rutting. Two tests (i.e., Hamburg Wheel Tracking test [HWTT], and Asphalt Pavement Analyzer [APA] rut test) and three rutting performance indicators (i.e., HWTT rut depth after 15,000 passes [HWTT15000], HWTT rut depth at 20,000 passes [HWTT20000], and APA rut depth after 8,000 cycles [APA8000]) were considered. An intensive laboratory investigation was conducted that included six LMLC, 10 PMLC, and field cores extracted from 17 field projects. The research findings showed that both HWTT and APA rut test provided similar rutting assessment for the evaluated mixes. The study recommended using the HWTT over the APA rut test since HWTT can be also used to assess the resistance of asphalt mixtures to moisture damage to moisture damage. Also, the study recommended using HWTT15000 over HWTT20000 as a performance indicator since it requires less testing time.The final phase of this research provided recommendations of the best testing standards, performance indicators, and performance specifications to assess asphalt mix resistance to cracking and rutting. In addition, it provided guidelines to demonstrate the use of the proposed tools during the design and/or production of asphalt mixes. It also proposed standards testing procedures for the newly developed WeibullCRI performance indicator and MSSD test.