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Effect Of Geotextile Fabrics On Reflective Cracking Of Hot Mix Asphalt Overlays In Washoe County Nevada
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Book Synopsis Effect of Geotextile Fabrics on Reflective Cracking of Hot Mix Asphalt Overlays in Washoe County, Nevada by : Nathaniel Evan Morian
Download or read book Effect of Geotextile Fabrics on Reflective Cracking of Hot Mix Asphalt Overlays in Washoe County, Nevada written by Nathaniel Evan Morian and published by . This book was released on 2007 with total page 177 pages. Available in PDF, EPUB and Kindle. Book excerpt: This investigation was conducted in an effort to examine the effectiveness of geotextile fabrics used in conjunction with hot mix asphalt overlays over existing hot mix asphalt pavement sections in the jurisdiction of the Engineering Department in Washoe County, Nevada. The analysis was focused on the effects of the fabric placement on cracking visible at the surface of the new overlay sections, most notable reflective cracking transferred from the existing pavement prior to the overlay. Only the surface of the pavements were explored using the visual condition survey methods utilized by the Micro PAVER software and pavement management system on multiple overlay projects constructed from 1983-2003. The distress measurements of the analysis sections were conducted prior to the overlay placement and approximately one, three, and five years, following the overlay application. The overlay thicknesses varied from 1.5-2.5 inches with and without fabric placements.--Adapted from abstract.
Book Synopsis Geotextile Fabrics Under an Asphalt Concrete Overlay to Retard Reflective Cracking by : Eric W. Brooks
Download or read book Geotextile Fabrics Under an Asphalt Concrete Overlay to Retard Reflective Cracking written by Eric W. Brooks and published by . This book was released on 1999 with total page 28 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Evaluation of Thin Asphalt Overlays for Pavement Preservation in Nevada by : Jhony Habbouche
Download or read book Evaluation of Thin Asphalt Overlays for Pavement Preservation in Nevada written by Jhony Habbouche and published by . This book was released on 2015 with total page 176 pages. Available in PDF, EPUB and Kindle. Book excerpt: The overall objective of this study was to assess the use of locally available materials in Nevada for the development of a durable fine-graded thin hot-mix asphalt overlay mixture for pavement preservation. A comprehensive laboratory evaluation using typical materials in Nevada was conducted. The investigation considered establishing two mix designs using typical local materials for the northern and southern part of the state. An optimal asphalt binder content was selected for each mixture based on the volumetric properties and following the Nevada Department of Transportation volumetric requirements. For each mixture, the optimal binder content was varied within the allowable tolerances to simulate the potential variation in asphalt binder content during plant production. The performance of the two thin hot-mix asphalt mixtures were then evaluated at the various asphalt binder contents in terms of their resistance to moisture damage using indirect tensile strength, resistance to surface raveling and abrasion, dynamic modulus property, resistance to rutting, resistance to reflective cracking, workability and compactability, and the developed interlayer bond strength. Overall, both designed fine-graded mixtures showed a very good performance and are expected perform well when used as a thin hot-mix asphalt overlay. In particular, good stability, very good resistance to surface raveling and abrasion, and excellent resistance to reflective cracking were observed for both thin hot-mix asphalt overlay mixtures at all evaluated asphalt binder contents. Thin asphalt overlay mixtures behaved as ordinary mixture and are expected to last longer than chip seals for a lower net present worth costs.
Book Synopsis Geotextile Fabrics Under an Asphalt Concrete Overlay to Retard Reflective Cracking by : Steve Armstrong
Download or read book Geotextile Fabrics Under an Asphalt Concrete Overlay to Retard Reflective Cracking written by Steve Armstrong and published by . This book was released on 1994 with total page 18 pages. Available in PDF, EPUB and Kindle. Book excerpt: In 1991, the City of Portland selected a section of East Burnside from 39th Avenue to 47th Avenue to grind-out and overlay asphalt concrete over an old Portland cement concrete (PCC) pavement. Geotextiles were used to provide reinforcement and retard reflective joint cracking. A test section on the eastbound lanes of Burnside between 44th Avenue and 45 Avenue was placed in September 1991. The test section included four cracks, which were covered with Glasgrid 8501 or Polyguard NW-75. A control section in the westbound lanes between 44th and 45th Avenue was also constructed about the same time.
Book Synopsis Reflective Cracking in Pavements by : L. Francken
Download or read book Reflective Cracking in Pavements written by L. Francken and published by CRC Press. This book was released on 2004-06-02 with total page 576 pages. Available in PDF, EPUB and Kindle. Book excerpt: Proceedings of RILEM TC-PRC third conference on this subject. Papers from road authorities, engineers, researchers, contractors and manufacturers discussing the implementation and the long term behaviour of overlay systems. The following topics are covered: prevention and cracking assessment, choice and design of overlay systems, practical implemen
Book Synopsis Reflective Cracking in Pavements by : J.M. Rigo
Download or read book Reflective Cracking in Pavements written by J.M. Rigo and published by CRC Press. This book was released on 2014-04-21 with total page 512 pages. Available in PDF, EPUB and Kindle. Book excerpt: This book forms the Proceedings of the Second International RILEM Conference held in Liege in March 1993. It follows the successful first conference held in 1989 and focusses on two main topics: the current state of the art of reflective cracking in highway and other pavements, and design recommendations for field applications. As well as more than
Book Synopsis Reflective Cracking of Flexible Pavements by : Elie Y. Hajj
Download or read book Reflective Cracking of Flexible Pavements written by Elie Y. Hajj and published by . This book was released on 2008 with total page 27 pages. Available in PDF, EPUB and Kindle. Book excerpt: This report summarizes all the findings and recommendations from the Phase I and Phase II of the Nevada Department of Transportation (NDOT) study initiated in 2006 to mitigate reflective cracking in hot mix asphalt (HMA) overlays. Based on the analysis of the various findings it was recommended to further evaluate the stress relief course (SRC) as a reflective cracking mitigation technique under Nevada's conditions. It should be noted that the SRC used by NDOT was not specifically designed or checked for its reflective cracking resistance and only consisted of a 1-inch of the typical Type II (1" max size) dense graded HMA mix placed between the existing HMA and the overlay. This NDOT study revealed promising performance for the SRC when specifically designed to resist reflective cracking. Additionally, for a good overall performance, the SRC needs to be coupled with an overlay mix with a good resistance to reflective cracking. Current state highway agencies' specifications for SRCs were reviewed and are summarized in this report. The review revealed specifications for SRCs in six different states. Four of those states: Arizona, California, Florida, and Massachusetts, specify an asphalt-rubber stress absorbing membrane interlayer (SAMI) which consists of an application of asphalt rubber binder followed by an application of aggregate. Texas DOT specifies a Crack Attenuating Mixture (CAM) which consists of an HMA mix designed according to the Superpave design procedure to a target air void of 2% at 50 gyrations along with criteria for the Hamburg Wheel and the Texas Transportation Institute (TTI) Overlay tests. The Utah DOT specifies a reflective cracking relief bituminous mixture which meets the general requirements specified for an HMA mixture except the mix is designed to a target air void of 0.5-2.5% at 50 design gyrations along with criteria for voids in mineral aggregate (VMA), Hveem stability, and flexural beam fatigue testing at optimum binder content.
Book Synopsis Geotextile Fabrics Under an Asphalt Concrete Overlay to Retard Reflective Cracking by : John G. Phipps
Download or read book Geotextile Fabrics Under an Asphalt Concrete Overlay to Retard Reflective Cracking written by John G. Phipps and published by . This book was released on 1992 with total page 34 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Use of Fabrics for Reflective Crack Control in Asphalt Concrete Overlays Over PCC Jointed Pavements by : Douglas W. Bish
Download or read book Use of Fabrics for Reflective Crack Control in Asphalt Concrete Overlays Over PCC Jointed Pavements written by Douglas W. Bish and published by . This book was released on 1989 with total page 20 pages. Available in PDF, EPUB and Kindle. Book excerpt: This report summarizes the installation and performance of three geotextile fabrics used to retard reflective cracking in an asphalt overlay test project.
Book Synopsis Use of Fabrics and Other Measures for Retarding Reflective Cracking of Asphaltic Concrete Overlays by :
Download or read book Use of Fabrics and Other Measures for Retarding Reflective Cracking of Asphaltic Concrete Overlays written by and published by . This book was released on 1980 with total page 22 pages. Available in PDF, EPUB and Kindle. Book excerpt: Prevention or control of reflection cracks in asphaltic concrete overlays has been a problem from the inception of this type of construction. The many different treatments that have been tried in an effort to solve this problem are: (1) reinforcement within and below the overlay, (2) bond breakers, (3) stress-relieving layers, (4) asphalt-mix additives, and (5) placement of fabrics between the existing pavement and the overlay. At the present time, no treatment has been tried that will completely prevent the formation of reflection cracks. Some treatments do delay the formation of cracks, while others do not appear to help at all. Indications are that fabrics do have some beneficial effects, such as a moisture barrier, even though the overlays develop reflection cracks. The fabrics that have been tried for the control of reflection cracks included: (1) Petromat, (2) Bidim, (3) Typar, (4) Cerex, (5) Mirafi, (6) Structofors, (7) Bituthene, (8) Protecto-Wrap, and (9) Fiberglass. Asphalt-rubber interlayers, as formulated by the Arizona Refining Company and the Sahuaro Petroleum Company, show promise in retarding reflection cracks. (Author).
Book Synopsis Fabrics in Asphalt Overlays and Pavement Maintenance by : Richard D. Barksdale
Download or read book Fabrics in Asphalt Overlays and Pavement Maintenance written by Richard D. Barksdale and published by . This book was released on 1991 with total page 84 pages. Available in PDF, EPUB and Kindle. Book excerpt: This synthesis will be of interest to pavement designers, maintenance engineers, and others interested in methods and procedures for reducing reflection cracking of asphalt overlays. Information is provided on the use of paving fabrics and membranes in pavement rehabilitation. Reflection cracking of pavement overlays results in decreased pavement performance with respect to ride quality, structural support, skid resistance, and safety. The use of fabrics is one of the alternatives that are available to reduce or delay reflection cracking. This report of the Transportation Research Board describes the experiences of agencies in the use of fabrics and membranes for reduction of reflection cracking.
Book Synopsis Prevention of Reflective Cracking in Pavements by : A. Vanelstraete
Download or read book Prevention of Reflective Cracking in Pavements written by A. Vanelstraete and published by CRC Press. This book was released on 2004-06-02 with total page 136 pages. Available in PDF, EPUB and Kindle. Book excerpt: Crack reflection through a road structure is one of the main causes of premature pavement deterioration. This is a widespread problem in many countries and highway maintenance authorities are having to find economic means of repairing and upgrading their pavements. This book is the eagerly awaited state-of-the-art report which considers all different aspects of the subject including assessment and use of overlay systems.
Book Synopsis Models for Predicting Reflection Cracking of Hot-mix Asphalt Overlays by : Robert L. Lytton
Download or read book Models for Predicting Reflection Cracking of Hot-mix Asphalt Overlays written by Robert L. Lytton and published by Transportation Research Board National Research. This book was released on 2010 with total page 76 pages. Available in PDF, EPUB and Kindle. Book excerpt: TRB's National Cooperative Highway Research Program (NCHRP) Report 669: Models for Predicting Reflection Cracking of Hot-Mix Asphalt Overlays explores mechanistic-based models for predicting the extent and severity of reflection cracking in hot-mix asphalt overlays. Appendices A through T to NCHRP Report 669 are available online--
Book Synopsis Reflective Cracking -- Fabrics by : Donna S. Harmelink
Download or read book Reflective Cracking -- Fabrics written by Donna S. Harmelink and published by . This book was released on 1986 with total page 74 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Modeling Reflective Cracking Development in Hot-mix Asphalt Overlays and Quantification of Control Techniques by : Jongeun Baek
Download or read book Modeling Reflective Cracking Development in Hot-mix Asphalt Overlays and Quantification of Control Techniques written by Jongeun Baek and published by . This book was released on 2010 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt: Hot-mix asphalt (HMA) overlay is regarded as an efficient method to rehabilitate moderately deteriorated pavements. Despite the application of an adequately designed overlay, when HMA overlays are built on jointed concrete pavement (JCP) or a cracked surface, reflective cracking can develop shortly after the overlay application due to traffic loads and environmental changes. Several remedial techniques, including interlayer systems, have been incorporated into HMA overlays to control reflective cracking. This study examined the behavior of traffic-induced reflective cracking using a finite element (FE) model for an HMA overlay with and without interlayer systems, and evaluated the performance of interlayer systems in controlling reflective cracking. To achieve these objectives, a three-dimensional FE model was built for a typical HMA overlay constructed over JCP. A linear viscoelastic model and a bilinear cohesive zone model (CZM) were incorporated into the FE model to characterize continuum and fracture behavior of the HMA. Using the bilinear CZM, reflective cracking initiation and propagation were simulated. Transient moving vehicular loading was applied across a joint to develop reflective cracking. In order to force reflective cracking development by one pass of load application, various levels of overload were applied. Two distinct interlayer systems, sand mix and steel netting with slurry seal, were examined for their effectiveness in controlling reflective cracking. The sand mix was modeled with the LVE model and bilinear CZM. The steel netting interlayer system was modeled with beam elements for steel wires and membrane elements for slurry seal. To quantify the status of reflective cracking development, a representative fractured area (RFAOL), that is an equivalent stiffness degradation in the entire HMA overlay, was used. A limit state load approach was used to determine the resistance of the HMA overlay to reflective cracking in terms of normalized axle load of an overload equivalent to a 80-kN single-axle load. The service life of the HMA overlay regarding reflective cracking was specified by the number of load repetitions based on the Paris law. A reflective cracking control factor was defined as the ratio of the service life to the HMA overlay without an interlayer system; the factor was used to evaluate the performance effectiveness of these interlayer systems in controlling reflective cracking. It was found that the bearing capacity of existing JCP played an important role in developing reflective cracking. Reflective cracking potential increased inversely with the modulus of base and subgrade layers. Interface bonding conditions, especially bonding strength, affected the development of reflective cracking. Lower interface bonding strength resulted in greater potential for developing reflective cracking. The study concluded that the sand mix interlayer system extended the service life of the HMA overlay regarding reflective cracking due to its relatively high fracture energy. A macro-crack level of reflective cracking was initiated in the wearing course in the HMA, so-called crack jumping. The softer the sand mix, the tougher it may be, but it may cause shear rutting in HMA overlay. Hence, sand mix fracture energy and thickness thresholds should be identified. The steel netting interlayer system performed better than the sand mix; the performance of the latter is thickness and fracture energy dependent. When the steel netting interlayer system was installed properly, the reflective cracking service life of the HMA overlay was found to be six times longer than that of the HMA. The performance was still better than sand mix when localized deboning induced. However, severe debonding of steel netting can be detrimental to its performance.
Book Synopsis Tests of Hot Mix Asphalt Overlays Using Geosynthetics to Reduce Reflection Cracking by : Arif Chowdhury
Download or read book Tests of Hot Mix Asphalt Overlays Using Geosynthetics to Reduce Reflection Cracking written by Arif Chowdhury and published by . This book was released on 2009 with total page 90 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Prediction of Reflection Cracking in Hot Mix Asphalt Overlays by : Fang-Ling Tsai
Download or read book Prediction of Reflection Cracking in Hot Mix Asphalt Overlays written by Fang-Ling Tsai and published by . This book was released on 2011 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt: Reflection cracking is one of the main distresses in hot-mix asphalt (HMA) overlays. It has been a serious concern since early in the 20th century. Since then, several models have been developed to predict the extent and severity of reflection cracking in HMA overlays. However, only limited research has been performed to evaluate and calibrate these models. In this dissertation, mechanistic-based models are calibrated to field data of over 400 overlay test sections to produce a design process for predicting reflection cracks. Three cracking mechanisms: bending, shearing traffic stresses, and thermal stress are taken into account to evaluate the rate of growth of the three increasing levels of distress severity: low, medium, and high. The cumulative damage done by all three cracking mechanisms is used to predict the number of days for the reflection crack to reach the surface of the overlay. The result of this calculation is calibrated to the observed field data (severity and extent) which has been fitted with an S-shaped curve. In the mechanistic computations, material properties and fracture-related stress intensity factors are generated using efficient Artificial Neural Network (ANN) algorithms. In the bending and shearing traffic stress models, the traffic was represented by axle load spectra. In the thermal stress model, a recently developed temperature model was used to predict the temperature at the crack tips. This process was developed to analyze various overlay structures. HMA overlays over either asphalt pavement or jointed concrete pavement in all four major climatic zones are discussed in this dissertation. The results of this calculated mechanistic approach showed its ability to efficiently reproduce field observations of the growth, extent, and severity of reflection cracking. The most important contribution to crack growth was found to be thermal stress. The computer running time for a twenty-year prediction of a typical overlay was between one and four minutes.
