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Two Year Field And Laboratory Evaluation Of Hot Mix Asphalt Crack Sealing Materials
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Book Synopsis Two Year Field and Laboratory Evaluation of Hot Mix Asphalt Crack Sealing Materials by :
Download or read book Two Year Field and Laboratory Evaluation of Hot Mix Asphalt Crack Sealing Materials written by and published by . This book was released on 2009 with total page 0 pages. Available in PDF, EPUB and Kindle. Book excerpt: "The objective of the NTPEP is to combine and focus the resources of the participating NTPEP member departments in the evaluation of materials of common interest in order to improve cost effectiveness. This report provides the NTPEP member departments the necessary information to evaluate HMA crack sealers without the investment of their time and manpower for testing ... This report contains the laboratory test results and some comments on the installation of the sealants, along with the data accumulated during the 2006 and 2008 performance evaluations, for the NTPEP Test Facility's study of HMA Crack Sealants submitted in 2005"--Page 2
Book Synopsis 2 Year Report (twenty Nine Months) Report of Field and Laboratory Evaluation of Hot-mix Asphalt Crack Sealing Materials by : National Center for Pavement Preservation
Download or read book 2 Year Report (twenty Nine Months) Report of Field and Laboratory Evaluation of Hot-mix Asphalt Crack Sealing Materials written by National Center for Pavement Preservation and published by . This book was released on 2009 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt: "The objective of the NTPEP is to combine and focus the resources of the participating NTPEP member departments in the evaluation of materials of common interest in order to improve cost effectiveness. This report provides the NTPEP member departments the necessary information to evaluate HMA crack sealers without the investment of their time and manpower for testing ... This report contains the laboratory test results and some comments on the installation of the sealants, along with the data accumulated during the 2006 and 2008 performance evaluations, for the NTPEP Test Facility's study of HMA Crack Sealants submitted in 2005"--P. 2.
Book Synopsis Report of One Year Field and Laboratory Evaluation of Hot Mix Asphalt Crack Sealing Materials by : National Center for Pavement Preservation
Download or read book Report of One Year Field and Laboratory Evaluation of Hot Mix Asphalt Crack Sealing Materials written by National Center for Pavement Preservation and published by . This book was released on 2007 with total page 72 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Field Investigation and Laboratory Evaluation of Asphalt Pavement Crack Seal Band by : Feng Li
Download or read book Field Investigation and Laboratory Evaluation of Asphalt Pavement Crack Seal Band written by Feng Li and published by . This book was released on 2014 with total page 10 pages. Available in PDF, EPUB and Kindle. Book excerpt: Crack sealing and filling are two of the main traditional techniques of asphalt pavement preventive maintenance. However, these techniques have the shortcomings of low operating efficiency and poor performance such as secondary cracking and edge failure. In this paper, the investigation results of field performance of crack seal band are presented. The seal band is a promising material of crack repair because it results in fewer secondary cracks and greater operating efficiency (two to four times more efficient than crack sealing). However, the field investigation also revealed four major failure modes of seal band, namely, unevenness, cohesion failure, adhesion failure, and pullout that provide the demand to carry out laboratory studies on the properties of seal band material. The following standards are referenced in the studies: (1) standard of hot-applied sealant, (2) standard of building waterproof roll, and (3) standards of related enterprises. Six evaluating test methods are put forward based on the laboratory studies, including: thickness meterage, width meterage, cone penetration test, softening point test, pullout test, and bond test. Fifteen seal band samples are tested in a laboratory evaluation. Based on the field investigation and test results, the technical requirements of different seal bands used in different areas are proposed.
Book Synopsis Evaluating the Effectiveness of Hot-poured Crack Surfacing Material by : Khaled Ksaibati
Download or read book Evaluating the Effectiveness of Hot-poured Crack Surfacing Material written by Khaled Ksaibati and published by . This book was released on 2006 with total page 126 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Field and Laboratory Evaluation of Crack Sealants by : Phillip G. Manke
Download or read book Field and Laboratory Evaluation of Crack Sealants written by Phillip G. Manke and published by . This book was released on 1981 with total page 82 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Evaluation of Low Temperature Cracking in Asphalt Pavement Mixes by : Khaled Ksaibati
Download or read book Evaluation of Low Temperature Cracking in Asphalt Pavement Mixes written by Khaled Ksaibati and published by . This book was released on 1998 with total page 134 pages. Available in PDF, EPUB and Kindle. Book excerpt: This report examines the feasibility of using the thermal stress restrained specimen test to evaluate low temperature cracking in asphalt pavement mixes. Data were collected from laboratory and field evaluations. Various mixing, aging, and compaction methods were used to prepare test samples with materials obtained from two Wyoming Department of Transportation (WYDOT) highway projects. Field data were obtained from two recently built test sections and compared with laboratory test results. Pavement condition surveys quantified low temperature cracking of both test sections after one winter. Temperature data for the project sites also were collected. Pavement condition and temperature data were compared to results from the thermal stress restrained specimen test. The thermal stress restrained specimen test was effective in testing asphalt pavement mixes. However, test results indicated that lab prepared samples did not closely simulate field samples. Also, comparisons of lab results with field conditions were performed. However, it is recommended that a more comprehensive analysis be performed after test sections have been in service for a few years.
Book Synopsis Field and Laboratory Evaluation of Selected Felxible Pavement Crack Sealants by : Scott A. Hofener
Download or read book Field and Laboratory Evaluation of Selected Felxible Pavement Crack Sealants written by Scott A. Hofener and published by . This book was released on 1980 with total page 126 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Evaluation of CRAFCO Crack Sealant on Asphalt Pavements by : Mike Marquart
Download or read book Evaluation of CRAFCO Crack Sealant on Asphalt Pavements written by Mike Marquart and published by . This book was released on 2001 with total page 90 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Investigation of Low Temperature Thermal Cracking in Hot Mix Asphalt by : Timothy Aschenbrener
Download or read book Investigation of Low Temperature Thermal Cracking in Hot Mix Asphalt written by Timothy Aschenbrener and published by . This book was released on 1995 with total page 98 pages. Available in PDF, EPUB and Kindle. Book excerpt: A study was performed to determine the influence of material properties on the thermal cracking performance of hot mix asphalt (HMA), and to determine the ability to predict thermal cracking from pavements of known field performance. The testing device used to measure the HMA properties was the thermal-stress, restrained-specimen test (TSRST), and the device used to measure the binder properties was the bending beam rheometer (BBR). The laboratory study was conducted to determine the variability of test results as an influence of 1) asphalt cement stiffness, 2) asphalt cement quantity, 3) mixes with various aggregate qualities, 4) aging, and 5) the presence of hydrated lime. The influence of the asphalt cement stiffness was the single largest factor that controlled the test results.
Book Synopsis Asphalt Construction for Pavements and Highways by : Clifford Richardson
Download or read book Asphalt Construction for Pavements and Highways written by Clifford Richardson and published by . This book was released on 1913 with total page 192 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Laboratory Evaluation of Hot-mix Asphalt Concrete Fatigue Cracking Resistance by : Brandon Parker Jamison
Download or read book Laboratory Evaluation of Hot-mix Asphalt Concrete Fatigue Cracking Resistance written by Brandon Parker Jamison and published by . This book was released on 2012 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt: The recent changes in the Texas Department of Transportation (TxDOT) hot mix asphalt (HMA) mix design procedures to ensure that the mixture types routinely used on Texas highways are not prone to rutting raised concerns that these mixture types are now more susceptible to fatigue cracking. The primary goal of this study was to evaluate fatigue cracking test methods and recommend that which is both simple and robust, especially in qualifying commonly used Texas mixture types. One way to minimize fatigue cracking is through material screening and selection of appropriate mix designs that are representative of fatigue-resistant HMA mixes. However, there are not many standardized laboratory fracture resistance tests that have been universally adopted for routine mix design and/or screening purposes for HMA fatigue resistance. In this study, four different fracture test methods: the Overlay Tester (OT), Direct Tension (DT), Indirect Tension (IDT), and Semicircular Bending (SCB) tests were comparatively evaluated for their potential application as surrogate tests for routine fracture resistance evaluation and screening of HMA mixes in the laboratory. The evaluation criteria included: rationality of the test concept and correlation to field performance, repeatability and variability, simplicity and practicality of the sample fabrication process, and simplicity of data analysis. Results and key findings based on the laboratory fatigue resistance characterization of various commonly used Texas coarse- and fine-graded HMA mixes (Type B, C, and D) are presented in this paper. Overall, preliminary findings indicated that no monotonically-loaded test would be appropriate as a surrogate fatigue resistance test; however, the SCB test showed potential as a repeated-loading test. Suggested SCB test improvements include developing the repeated SCB test protocol, determining the appropriate failure criterion, and correlating laboratory performance to field performance.
Book Synopsis A New Laboratory Evaluation Method for the Adhesive Performance of Crack Sealants by : Xiaodi Hu
Download or read book A New Laboratory Evaluation Method for the Adhesive Performance of Crack Sealants written by Xiaodi Hu and published by . This book was released on 2011 with total page 7 pages. Available in PDF, EPUB and Kindle. Book excerpt: Crack sealing is a practice used for routine and preventive maintenance as part of a pavement's preservation strategy. However, crack sealant failures are common in Texas, particularly within the first 3 years of application (or service life). The major causes of sealant failures can be classified under two categories: Adhesion failure and cohesion failure. Although both failures can lead to a significant reduction in the service life of a pavement structure, adhesive failure is in most cases the dominant failure type. Several laboratory tests such as rotational viscosity, penetration, softening point, ductility, and bond tests are currently used to evaluate the properties of crack sealants. Among these tests, the bond test is specifically used to evaluate the adhesive failure of crack sealants and the procedure of the bond test is well documented in ASTM D5329-07. However, the bond test often takes several days to complete, and the pass/fail criterion is determined through visual observation, which is a very subjective process. Furthermore, the correlation between the bond test and adhesive failure performance of crack sealants in the field was found to be either weak or non-existent. In an attempt to minimize these problems, a simple, fast, and adhesive performance-related laboratory test method is developed in this paper to ensure the proper selection of a sealant for a given project.
Book Synopsis Issues Pertaining to Laboratory Evaluation of Hot Mix Asphalt by : Patrick Vaughan Kiser
Download or read book Issues Pertaining to Laboratory Evaluation of Hot Mix Asphalt written by Patrick Vaughan Kiser and published by . This book was released on 2000 with total page 522 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Validation of Hot-Poured Crack Sealant Performance-Based Guidelines by : Imad L. Al-Qadi
Download or read book Validation of Hot-Poured Crack Sealant Performance-Based Guidelines written by Imad L. Al-Qadi and published by . This book was released on 2017 with total page 0 pages. Available in PDF, EPUB and Kindle. Book excerpt: This report summarizes a comprehensive research effort to validate thresholds for performance-based guidelines and grading system for hot-poured asphalt crack sealants. A series of performance tests were established in earlier research and include the crack sealant bending beam rheometer (CSBBR), crack sealant direct tension test (CSDTT), the crack sealant adhesion test (CSAT), a rotational viscosity test, and a dynamic shear test. Validation was accomplished through an extensive field performance study incorporating a wide spectrum of commonly used sealants installed in eight test sites around the United States using two basic treatment methods: (1) clean and seal, and (2) rout and seal. Performance of these sealants and treatment methods were monitored for 3 years to quantify relative performance, primarily through adhesive and cohesive failures, as well as overband wear. Field samples were also collected from the sites to conduct laboratory testing to reflect in-service properties. A statistical method was used to develop correlations of the tests parameters with the field performance. The composite score approach, combining ranking and correlation, was used to develop a quantitative scale for determining the level of acceptance. Based on the composite score, a strong or acceptable correlation was obtained between field performance and laboratory test parameters. After the correlation between field performance and lab results was confirmed, the thresholds for test methods were selected or fine-tuned. An investigation was also conducted to evaluate the short-term and long-term aging effects of hot-poured crack sealants through a differential aging test. Rheological and mechanical properties of sealants at different aging stages were monitored to characterize the aging effects. Laboratory aging of sealants was studied using three different aging methods: kettle aging, melter aging, and vacuum oven aging (VOA). The aging index was used to evaluate the effect of these aging methods. By a comparison of the stiffness master curves obtained from the CSBBR test for field-aged samples and laboratory-aged samples, VOA was validated as a reasonable aging method for simulating 2 to5 years of field aging. The research proposes new guidelines for full implementation as AASHTO specifications. In addition to validated and revised thresholds for existing protocols, the research proposed a modified adhesion test and a simplified test for tracking resistance. Close inspection of the installation techniques and early performance feedback also supported the development of guidelines for crack sealant installation and application.
Book Synopsis Field and Laboratory Investigations on Hot-mix Asphalt Concrete by : John W. Shupe
Download or read book Field and Laboratory Investigations on Hot-mix Asphalt Concrete written by John W. Shupe and published by . This book was released on 1955 with total page 30 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Validation of Hot-Poured Crack Sealant Performance-Based by : Imad L. Al-Qadi
Download or read book Validation of Hot-Poured Crack Sealant Performance-Based written by Imad L. Al-Qadi and published by . This book was released on 2017 with total page 67 pages. Available in PDF, EPUB and Kindle. Book excerpt: This report summarizes a comprehensive research effort to validate thresholds for performance-based guidelines and grading system for hot-poured asphalt crack sealants. A series of performance tests were established in earlier research and include the crack sealant bending beam rheometer (CSBBR), crack sealant direct tension test (CSDTT), the crack sealant adhesion test (CSAT), a rotational viscosity test, and a dynamic shear test. Validation was accomplished through an extensive field performance study incorporating a wide spectrum of commonly used sealants installed in eight test sites around the United States using two basic treatment methods: (1) clean and seal, and (2) rout and seal. Performance of these sealants and treatment methods were monitored for 3 years to quantify relative performance, primarily through adhesive and cohesive failures, as well as overband wear. Field samples were also collected from the sites to conduct laboratory testing to reflect in-service properties. A statistical method was used to develop correlations of the tests parameters with the field performance. The composite score approach, combining ranking and correlation, was used to develop a quantitative scale for determining the level of acceptance. Based on the composite score, a strong or acceptable correlation was obtained between field performance and laboratory test parameters. After the correlation between field performance and lab results was confirmed, the thresholds for test methods were selected or fine-tuned. An investigation was also conducted to evaluate the short-term and long-term aging effects of hot-poured crack sealants through a differential aging test. Rheological and mechanical properties of sealants at different aging stages were monitored to characterize the aging effects. Laboratory aging of sealants was studied using three different aging methods: kettle aging, melter aging, and vacuum oven aging (VOA). The aging index was used to evaluate the effect of these aging methods. By a comparison of the stiffness master curves obtained from the CSBBR test for field-aged samples and laboratory-aged samples, VOA was validated as a reasonable aging method for simulating 2 to5 years of field aging. The research proposes new guidelines for full implementation as AASHTO specifications. In addition to validated and revised thresholds for existing protocols, the research proposed a modified adhesion test and a simplified test for tracking resistance. Close inspection of the installation techniques and early performance feedback also supported the development of guidelines for crack sealant installation and application.
