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Field Investigation And Laboratory Evaluation Of Asphalt Pavement Crack Seal Band
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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 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 Laboratory and Field Investigation of Reflective Crack Mitigation in Layered Asphalt Concrete Pavements by : Andrew David Wargo
Download or read book Laboratory and Field Investigation of Reflective Crack Mitigation in Layered Asphalt Concrete Pavements written by Andrew David Wargo and published by . This book was released on 2015 with total page 310 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 Laboratory Evaluation of the Causes of Asphalt Pavement Defects by : Ontario. Dept. of Highways. Research Branch
Download or read book Laboratory Evaluation of the Causes of Asphalt Pavement Defects written by Ontario. Dept. of Highways. Research Branch and published by . This book was released on 1961 with total page 35 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis State-of-the-art Survey of Flexible Pavement Crack Sealing Procedures in the United States by : Robert A. Eaton
Download or read book State-of-the-art Survey of Flexible Pavement Crack Sealing Procedures in the United States written by Robert A. Eaton and published by . This book was released on 1992 with total page 28 pages. Available in PDF, EPUB and Kindle. Book excerpt: A survey of all 50 United States was conducted in September of 1990 to determine the state of the art of crack sealing procedures on flexible asphalt concrete pavements. The results were tabulated and a summary report prepared. A meeting was held at the U.S. Army Cold Regions Research and Engineering Laboratory to discuss the draft report; the comments and suggestions received were incorporated into this report. At the meeting the group identified the need for a trade organization to develop uniform specifications and terminology and to promote proper equipment, methodology, materials, training and education in the pavement crack sealing industry.
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 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 Characterization of Crack Sealant Materials and Implementation Techniques by : Mithil Mazumder
Download or read book Characterization of Crack Sealant Materials and Implementation Techniques written by Mithil Mazumder and published by . This book was released on 2019 with total page 340 pages. Available in PDF, EPUB and Kindle. Book excerpt: Crack sealant materials are used to seal cracks early to reduce water infiltration and pavement repair. Crack sealant with high stiffness property is required due to the premature failure of sealant materials in cold weather. In order to put the sealant into the crack, crack sealing and filling technique has always been an important consideration to prolong the life of pavement. Crack sealing uses a router to cut the face of the crack to provide a uniform rectangular reservoir whereas filling is simply inserting sealant without performing any modification to the crack walls. For saving the cost of transportation agency, it is required to implement the best crack treatment techniques along with a new prospective crack sealant material. This research investigated the prospective of a new crack sealant material and its implementation techniques, and the objectives included: 1) investigating the rheology, cracking and microstructural properties of asphalt binder modified with SIS; 2) evaluating and comparing the field performance of crack treatment techniques in Texas; 3) investigating the best cost effectiveness practice between crack filling and sealing techniques; 4) quantifying the environmental impacts of crack filling and sealing treatment. The following conclusions were drawn based on the comprehensive laboratory and field investigation: 1) SIS modifier has the potential to be produced as a crack sealant material; 2) crack sealing treatment exhibited excellent performance and is observed to have on an average 37% more treatment effectiveness than crack filling treatment; 3) the highway design and maintenance program (HDM-III) and field cost input analysis showed that crack sealing can be more cost effective practice in a long run compared to filling technique; 4) although the initial environmental emissions of crack sealing treatment is higher compared to filling technique, this can be compensated along with an approximately 25% reduction in emissions by implementing crack sealing treatment over a long period; 5) implementing with proper guidelines crack sealing technique is more cost effective practice in a long run compared to filling technique.
Book Synopsis Innovative Assessment Tests and Indicators for Performance-based Asphalt Mix Design by : Hamza Alkuime
Download or read book Innovative Assessment Tests and Indicators for Performance-based Asphalt Mix Design written by Hamza Alkuime and published by . This book was released on 2019 with total page 626 pages. Available in PDF, EPUB and Kindle. Book excerpt: 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.
Book Synopsis Laboratory Evaluation of Sealant Materials and Crack Sealing Techniques for Flexible Pavements by :
Download or read book Laboratory Evaluation of Sealant Materials and Crack Sealing Techniques for Flexible Pavements written by and published by . This book was released on 1994 with total page 20 pages. Available in PDF, EPUB and Kindle. Book excerpt: This paper presents the development of a laboratory testing procedure for the evaluation of flexible pavement crack routing and sealing techniques. The testing procedure simulates both sealant installation techniques and environmental and traffic conditions. An experimental program involving the affecting factors has been designed and is represented in the paper. For the covering abstract of this conference, see IRRD number 863140.
Book Synopsis Field and Laboratory Evaluation of Environmental Effects on Chip Seal Performance by : Nazimuddin M. Wasiuddin
Download or read book Field and Laboratory Evaluation of Environmental Effects on Chip Seal Performance written by Nazimuddin M. Wasiuddin and published by . This book was released on 2015 with total page 14 pages. Available in PDF, EPUB and Kindle. Book excerpt: Chip seals generally deteriorate as a result of asphalt oxidation, wear and polishing of aggregates, bleeding, and raveling (loss of aggregates). In this study, two major environmental effects on chip seal performance, freeze-thaw, and asphalt aging were investigated based on laboratory tests and field distress survey. For freeze-thaw evaluation, laboratory chip seal samples were prepared for 18 combinations (6 aggregates X 3 asphaltic materials). A simple freeze-thaw protocol was developed and evaluation of freeze-thaw effect on aggregate types reveals that both the precoated and uncoated expanded shale lightweight aggregates perform comparatively very well against freeze-thaw. Evaluation of freeze-thaw effect on asphaltic material types reveals that CRS-2P, an emulsion performs significantly better than hot asphalts, namely PAC-15 and AC20-5TR. For aging evaluation, asphaltic materials were extracted from 15 (5 aggregates X 3 asphaltic materials) field test sections and increase in stiffness due to aging were determined using a dynamic shear rheometer. For each of the five aggregates, CRS-2P shows the lowest G*/sin?, indicating minimum field aging susceptibility among the three asphaltic materials while AC20-5TR shows slightly higher G*/sin? than PAC-15, indicating maximum field aging susceptibility. Overall field distress ratings of the CRS-2P sections (sum of distress ratings of all the CRS-2P sections) are better than those of PAC-15 and AC20-5TR. The overall distress ratings of PAC-15 sections are better than overall distress ratings of AC20-5TR. In case of aggregate types, precoated expanded shale lightweight test sections performed the best, while expanded clay lightweight sections performed very poorly. Both freeze-thaw and asphalt aging tests closely reflect field performances and it can be concluded that the freeze-thaw and aging performances can be used as effective tools for predicting long term chip seal performances.
Book Synopsis Field Studies of Methods and Materials for Joint and Crack Sealing by : National Research Council (U.S.). Highway Research Board
Download or read book Field Studies of Methods and Materials for Joint and Crack Sealing written by National Research Council (U.S.). Highway Research Board and published by . This book was released on 1957 with total page 46 pages. Available in PDF, EPUB and Kindle. Book excerpt:
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:
