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Development And Evaluation Of Test Procedures To Identify Moisture Damage Prone Hot Mix Asphalt Pavements Electronic Resource
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Book Synopsis Development and Evaluation of Test Procedures to Identify Moisture Damage Prone Hot Mix Asphalt Pavements [electronic Resource] by : Andrea Nicole Kvasnak
Download or read book Development and Evaluation of Test Procedures to Identify Moisture Damage Prone Hot Mix Asphalt Pavements [electronic Resource] written by Andrea Nicole Kvasnak and published by . This book was released on 2006 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Development of Simple Performance Tests Using Laboratory Test Procedures to Illustrate the Effects of Moisture Damage on Hot Mix Asphalt by : Jason Bausano
Download or read book Development of Simple Performance Tests Using Laboratory Test Procedures to Illustrate the Effects of Moisture Damage on Hot Mix Asphalt written by Jason Bausano and published by . This book was released on 2006 with total page 0 pages. Available in PDF, EPUB and Kindle. Book excerpt: It has been extensively documented since the late 1970's that moisture damage occurs in hot mix asphalt (HMA) pavements. A variety of test methods are available that test an HMA's ability to resist moisture sensitivity. There are also some test methods that look at an asphalt binder's moisture susceptibility. The current test method for detecting moisture sensitivity in HMA is American Association of State Highway and Transportation Officials (AASHTO) T283: Resistance of Compacted Bituminous Mixture to Moisture-Induced Damage. Inclusion of this test method in Superpave did not consider the change in specimen size from 100mm to 150mm nor difference in compaction method. The procedures in AASHTO T283 consider the loss of strength due to freeze/thaw cycling and the effects of moisture existing in specimens compared to unconditional specimens. However, mixtures do not experience such a pure phenomenon. Pavements undergo cycling of environmental conditions, but when moisture is present, there is repeated hydraulic loading with the development of pore pressure in mixtures. Thus, AASHTO T283 does not consider the effect of pore pressure, but rather considers a single load effect on environmentally conditioned specimens. This report develops moisture susceptibility procedures which would utilize repeated loading test devices (dynamic modulus or asphalt pavement analyzer) of specimens in saturated conditions and be compared to unconditioned specimens in a dry test environment. In addition to HMA mixture testing, a modified dynamic shear rheometer will be used to determine if an asphalt binder or mastic is moisture susceptible. Moisture susceptible criteria was developed using the dynamic complex modulus, asphalt pavement analyzer, and dynamic shear rheometer. Evaluation of AASHTO T283 for 150mm Superpave Gyrtaory compacted specimens is also detailed in this report along with a new criterion.
Book Synopsis Comparative Evaluation of Moisture Susceptibility Test Methods for Routine Usage in Asphalt Mixture Design by : Christopher J. DeCarlo
Download or read book Comparative Evaluation of Moisture Susceptibility Test Methods for Routine Usage in Asphalt Mixture Design written by Christopher J. DeCarlo and published by . This book was released on 2020 with total page 19 pages. Available in PDF, EPUB and Kindle. Book excerpt: Asphalt materials experience substantial amounts of environmental damage throughout their lives as surface layers in pavements. One of the most prominent forms of environmental damage, moisture-induced damage, is caused by the weakening of internal bonds of the material because of the presence of moisture in the voids of asphalt mixtures and is a common problem for asphalt pavements in wet climates. Moisture-induced damage is typically accounted for during asphalt mixture design by conducting performance tests to ensure the material is not susceptible to severe damage from moisture, although many of these methods have seen mixed amounts of success historically. The main objective of this study is to evaluate the ability of multiple asphalt mixture moisture susceptibility tests to identify good and poor performing mixtures with respect to moisture-induced damage to replace current mix design testing requirements. Ten plant-produced hot mix asphalt materials with established good and poor field moisture performance were subjected to various moisture susceptibility test methods. The results from these procedures are assessed to determine which procedure is most effective and practical as a moisture susceptibility test for routine usage during asphalt mixture design for transportation agencies. Results from this study suggest that performance tests with stiffness-based measurements, such as dynamic modulus paired with moisture conditioning and the saturated aging tensile stiffness procedure, show better correlation to field performance than traditional test methods such as AASHTO T-283, Standard Method of Test for Resistance of Compacted Asphalt Mixtures to Moisture-Induced Damage, and that the Hamburg wheel tracker test is the most effective and practical test method to reliably identify mixtures prone to experiencing moisture-induced damage.
Book Synopsis Evaluation of Hot Mix Asphalt Moisture Sensitivity Using the Nottingham Asphalt Test Equipment by : Sunghwan Kim
Download or read book Evaluation of Hot Mix Asphalt Moisture Sensitivity Using the Nottingham Asphalt Test Equipment written by Sunghwan Kim and published by . This book was released on 2005 with total page 70 pages. Available in PDF, EPUB and Kindle. Book excerpt: Even though moisture sensitivity of Hot Mix Asphalt (HMA) mixtures has been recognized as a major form of distress in asphalt concrete pavements since the advent of asphalt paving technology, the mechanism of this problem has not been clearly identified until now. However, it has been agreed that it can be characterized by the loss of adhesive bond between the asphalt binder and the aggregate or by a softening of the cohesive bonds within the asphalt binder, both of which are due to the action of loading under traffic in the presence of moisture. The evaluation of Hot Mix Asphalt moisture sensitivity has been divided into two categories: visual inspection test and mechanical test. However, most of them have been developed in pre-Superpave mix design. This research was conducted to develop a new test protocol which can overcome the problems of the current procedures and to evaluate the possibility of using the Nottingham Asphalt Tester (NAT) in the resulting procedure.
Book Synopsis Improved Conditioning and Testing Procedures for HMA Moisture Susceptibility by : Mansour Solaimanian
Download or read book Improved Conditioning and Testing Procedures for HMA Moisture Susceptibility written by Mansour Solaimanian and published by Transportation Research Board. This book was released on 2007 with total page 79 pages. Available in PDF, EPUB and Kindle. Book excerpt: Explores whether combining the environmental conditioning system with the simple performance test would provide a superior procedure for determining the moisture susceptibility of hot-mix asphalt (HMA).
Book Synopsis Evaluation and Prevention of Water Damage to Asphalt Pavement Materials by : Byron E. Ruth
Download or read book Evaluation and Prevention of Water Damage to Asphalt Pavement Materials written by Byron E. Ruth and published by ASTM International. This book was released on 1985 with total page 159 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Validation of Guidelines for Evaluating the Moisture Susceptibility of WMA Technologies by : Amy Epps Martin
Download or read book Validation of Guidelines for Evaluating the Moisture Susceptibility of WMA Technologies written by Amy Epps Martin and published by . This book was released on 2016 with total page 48 pages. Available in PDF, EPUB and Kindle. Book excerpt: TRB's National Cooperative Highway Research Program (NCHRP) Report 817: Validation of Guidelines for Evaluating the Moisture Susceptibility of WMA Technologies presents validated guidelines proposed for identifying potential moisture susceptibility in warm mix asphalt (WMA) during mix design. The report further corroborates the moisture susceptibility thresholds described in NCHRP Report 763: Evaluation of the Moisture Susceptibility of WMA Technologies.
Book Synopsis Laboratory Evaluation and Digital Image Processing Techniques in Determining Moisture Susceptibility of Reclaimed Asphalt Pavement Mixtures by : Babatunde Joseph Onase
Download or read book Laboratory Evaluation and Digital Image Processing Techniques in Determining Moisture Susceptibility of Reclaimed Asphalt Pavement Mixtures written by Babatunde Joseph Onase and published by . This book was released on 2023 with total page 0 pages. Available in PDF, EPUB and Kindle. Book excerpt: About 90% of all roads and highways in the United States (U.S.) are built with Hot Mix Asphalt (HMA). Due to growing demand, a shortage of aggregate, and a lack of binder supplies, Reclaimed Asphalt Pavement (RAP) has emerged as a critical component in HMA. RAP is used in asphalt pavement for various reasons, but the two most crucial reasons are economic savings and environmental advantages. Moisture damage, which is also called moisture susceptibility or moisture sensitivity, can be caused by the amount, quality, and type of materials in the asphalt mixture, as well as by environmental factors, construction details, and pavement design elements. Moisture damage causes the stripping of asphalt binder from the surface of the aggregate. Stripping impairs pavement performance and frequently leads to unanticipated increases in maintenance budgets. Several laboratory procedures have been developed to measure the moisture sensitivity of asphalt mixtures, some of which rely on subjective visual evaluation. Setting a pass/fail standard for these subjective tests can be challenging. This study first compares laboratory test results for HMA mixtures with varying amounts of RAP content using the Indirect Tensile Strength test (AASHTO T 283), Boil Test (ASTM D3625), and Hamburg Wheel Tracking Test (AASHTO T 324). Subsequently, digital image analysis using Python programming language and colorimeter readings were taken on laboratory test specimens to quantify the amount of stripping. Mixtures with higher amounts of RAP were found to be more moisture susceptible. Strong correlations were found between the image analysis test results, colorimeter readings, and laboratory test results.
Book Synopsis Development of a New Test Procedure to Evaluate the Moisture Susceptibility of Hot Mix Asphalt by : Jason Paul Bausano
Download or read book Development of a New Test Procedure to Evaluate the Moisture Susceptibility of Hot Mix Asphalt written by Jason Paul Bausano and published by . This book was released on 2006 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Evaluation of the Moisture Susceptibility of WMA Technologies by : Amy Epps Martin
Download or read book Evaluation of the Moisture Susceptibility of WMA Technologies written by Amy Epps Martin and published by Transportation Research Board. This book was released on 2014 with total page 109 pages. Available in PDF, EPUB and Kindle. Book excerpt: "TRB's National Cooperative Highway Research Program (NCHRP) Report 763: Evaluation of the Moisture Susceptibility of WMA Technologies presents proposed guidelines for identifying potential moisture susceptibility in warm mix asphalt (WMA). The report also suggests potential revisions to the Appendix to AASHTO R 35, "Special Mixture Design Considerations and Methods for WMA" as a means to implement the guidelines."--publisher's description
Book Synopsis A Test Method for Identifying Moisture Susceptible Asphalt Concrete Mixes by : Muhammad Murshed Alam
Download or read book A Test Method for Identifying Moisture Susceptible Asphalt Concrete Mixes written by Muhammad Murshed Alam and published by . This book was released on 1998 with total page 96 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Evaluation of Procedures Used to Predict Moisture Damage in Asphalt Mixtures by : Kevin D. Stuart
Download or read book Evaluation of Procedures Used to Predict Moisture Damage in Asphalt Mixtures written by Kevin D. Stuart and published by . This book was released on 1986 with total page 36 pages. Available in PDF, EPUB and Kindle. Book excerpt: Procedures for evaluating the moisture susceptibility of asphalt mixtures were compared by performing them on mixtures having a known history of susceptibility. Data included the retained ratios, visual stripping, mechanical values (tensile strength, stability, etc.), saturation, and swell. The most promising procedures appeared to be the NCHRP 246 and NCHRP 274.
Book Synopsis Performance Tests for Hot Mix Asphalt (HMA) Including Fundamental and Empirical Procedures by : Louay Nadhim Mohammad
Download or read book Performance Tests for Hot Mix Asphalt (HMA) Including Fundamental and Empirical Procedures written by Louay Nadhim Mohammad and published by ASTM International. This book was released on 2006 with total page 216 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Evaluation of Indirect Tensile Test (IDT) Procedures for Low-temperature Performance of Hot Mix Asphalt by : Donald W. Christensen
Download or read book Evaluation of Indirect Tensile Test (IDT) Procedures for Low-temperature Performance of Hot Mix Asphalt written by Donald W. Christensen and published by Transportation Research Board. This book was released on 2004 with total page 62 pages. Available in PDF, EPUB and Kindle. Book excerpt: Introduction and Research Approach -- Findings -- Interpretation, Appraisal, and Applications -- Conclusions and Recommendations -- References -- Appendixes.
Book Synopsis Developing Simple Lab Test to Evaluate HMA Resistance to Moisture, Rutting, Thermal Cracking Distress by : Feng Zhu
Download or read book Developing Simple Lab Test to Evaluate HMA Resistance to Moisture, Rutting, Thermal Cracking Distress written by Feng Zhu and published by . This book was released on 2008 with total page 237 pages. Available in PDF, EPUB and Kindle. Book excerpt: The pavement distresses including stripping, rutting, and low temperature cracking have been known to greatly decrease the service life of pavement. The simple laboratory tests are used to measure HMA's (Hot Mix Asphalt) fundamental engineering properties that can be linked back to the pavement distress-prediction models. It is envisioned that these simple laboratory tests would play a key role in the quality control of HMA mixtures. To minimize premature pavement distresses, it is imperative to investigate the relationship between the simple laboratory tests and pavement distresses. Moisture induced damage in asphalt concrete pavement, better known as stripping, is a primary cause of distresses in the Hot Mix Asphalt layer. AASHTO T 283 has historically been used to detect moisture damage of asphalt mixes. This method is established for the Marshall mix design process. However, the current hot mix asphalt design calls for the use of Superpave mix design procedure using the Superpave Gyratory Compactor. The differences in the mix design methods will most likely introduce significant differences in stripping test results. Therefore, there is a need to improve the AASHTO T 283 test procedure and to develop the new criterion for the Superpave HMA specimen's susceptibility to moisture damage. The experimental test program is divided into two parts: one part is a complete factorial experimental program for two aggregate sources with virgin asphalt binder, the second part is a partial factorial experimental program for the other two aggregate sources with polymer modified asphalt binders. The complete factorial experiment is used to identify and evaluate the contributions of the individual factors, along with all the possible interactions among the various factors. The partial factorial experiment, on the other hand, is used for validating findings from complete factorial experimental results. In the data analysis, the effects of different factors on dry tensile strength, freeze-thaw conditioned tensile strength, and tensile strength ratio (TSR) are investigated in this research. The effects of all the factors investigated in this research are summarized in this research. The recommendations for the proposed stripping test procedure for Superpave HMA are given finally. Rutting and low temperature cracking are also primary failure modes of Hot Mix Asphalt pavements. In the mid-1980s, polymer-modified asphalt concrete mixture has been widely used to minimize rutting and low temperature cracking failures of flexible pavement. In this research, three polymer modifiers are used in the laboratory test. The influences of the modifiers to rutting resistance and low temperature cracking resistance are investigated and regression procedures are performed in an attempt to develop mathematical relationships between pavement distresses properties and HMA's physical properties and strength properties obtained from the simple laboratory tests.
Book Synopsis Development of a Rapid Test to Determine Moisture Sensitivity of Hot Mix Asphalt (Superpave) Mixtures by : Chandra Manandhar
Download or read book Development of a Rapid Test to Determine Moisture Sensitivity of Hot Mix Asphalt (Superpave) Mixtures written by Chandra Manandhar and published by . This book was released on 2010 with total page 105 pages. Available in PDF, EPUB and Kindle. Book excerpt: Existing test methods to determine moisture sensitivity in Hot Mix Asphalt (HMA) are time consuming and inconsistent. This research focused on wheel tracking devices to develop a rapid test method to evaluate moisture sensitivity. The Asphalt Pavement Analyzer (APA) and the Hamburg Wheel Tracking Device (HWTD) were used for this research. Compacted cylindrical samples were fabricated using a Superpave gyratory compactor. This study selected two most commonly used mixtures, SM-12.5A with Pg 64-22 binder in overlay projects and SM-19A mixtures with PG 64-22 binder for major modification projects at the Kansas Department of Transportation. Test results show that APA tests could induce stripping in most samples without any anti-stripping agent, which could be indentified visually. However, APA results do not indicate any stripping inflection point while the HWTD results show stripping inflection points, which are important to indentify stripping potential of mixtures. The APA results show that wet tests are severe at lower temperatures whereas dry tests show high rut depths at higher temperatures. The HWTD results show improvement in the performance using anti-stripping agents at later stage. The HWTD test is more effective than the APA as a rapid test method for determining moisture sensitivity of HMA. Laboratory results from this study should be verified and correlated with field performance.
Book Synopsis Evaluation of Moisture Damage in Warm Mix Asphalt Containing Recycled Asphalt Pavement by : Emily Dawn Shrum
Download or read book Evaluation of Moisture Damage in Warm Mix Asphalt Containing Recycled Asphalt Pavement written by Emily Dawn Shrum and published by . This book was released on 2010 with total page 79 pages. Available in PDF, EPUB and Kindle. Book excerpt: Warm mix asphalt (WMA) has been used worldwide for many years, primarily in Europe. The National Asphalt Pavement Association first brought WMA to the United States in 2002. By using warm mix technology, the temperature of an asphalt mixture during production, transportation, and compaction decreases dramatically. Several concerns about WMA arise due to the reduced mixing temperature. One of the primary concerns in asphalt pavement is the moisture damage. The lower mixing temperature may not be high enough to vaporize all the moisture absorbed in the aggregate, and part of the moisture may be entrapped in the pavements during compaction. This thesis presents a laboratory study to evaluate the moisture susceptibility of warm mix asphalt (WMA) produced through plant foaming procedure. Two types of mixtures were evaluated. A base mixture meeting the state of Tennessee "BM-2" mix criteria was evaluated at 0, 30, 40, and 50 percent fractionated recycled asphalt pavement (RAP), and a surface mixture meeting the state of Tennessee "411-D" mix criteria was evaluated at 15, 20, 30, 40 percent fractionated RAP. WMA mixture specimens were obtained and compacted at the asphalt plant. The WMA specimens were compared to hot-mix asphalt (HMA) specimens through a set of laboratory mixture performance tests. In addition to traditional AASHTO T283 freeze and thaw (F-T) tensile strength ratio (TSR), Superpave indirect tensile test (IDT) with F-T and MIST conditioning, and Asphalt Pavement Analyzer (APA) Hamburg wheel tracking tests were utilized to evaluate asphalt mixtures. Moisture tests indicated that with the higher inclusions of RAP, specimens exhibited lower rut depths and higher tensile strength retention. Tensile strength ratio tests indicated that HMA specimens had higher tensile strength retention when freeze thaw conditioned. Dynamic modulus conditioned specimens indicated that simple performance tests can show the difference between conditioned and unconditioned specimens. HMA specimens showed lower susceptibility to moisture compared to WMA specimens for both BM-2 and 411-D mixtures. The higher percentages of RAP in WMA and HMA in both BM-2 and 411-D mixtures showed a reduction to moisture susceptibility.
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