Effect of Geotextile Fabrics on Reflective Cracking of Hot Mix Asphalt Overlays in Washoe County, Nevada PDF Download
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Author: Nathaniel Evan Morian
Publisher:
ISBN:
Category : Pavements
Languages : en
Pages : 177
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Book Description
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.
Author: Nathaniel Evan Morian
Publisher:
ISBN:
Category : Pavements
Languages : en
Pages : 177
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Book Description
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.
Author: Eric W. Brooks
Publisher:
ISBN:
Category : Geotextiles
Languages : en
Pages : 28
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Book Description
Author: Jhony Habbouche
Publisher:
ISBN:
Category : Binders (Materials)
Languages : en
Pages : 176
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Book Description
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.
Author: Steve Armstrong
Publisher:
ISBN:
Category : Geotextiles
Languages : en
Pages : 18
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Book Description
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.
Author: J.M. Rigo
Publisher: CRC Press
ISBN: 1482271249
Category : Architecture
Languages : en
Pages : 512
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Book Description
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
Author: L. Francken
Publisher: CRC Press
ISBN: 1482271796
Category : Architecture
Languages : en
Pages : 576
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Book Description
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
Author: Elie Y. Hajj
Publisher:
ISBN:
Category : Pavements, Asphalt concrete
Languages : en
Pages : 27
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Book Description
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.
Author: John G. Phipps
Publisher:
ISBN:
Category : Geotextiles
Languages : en
Pages : 34
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Book Description
Author: Douglas W. Bish
Publisher:
ISBN:
Category : Pavements
Languages : en
Pages : 20
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Book Description
This report summarizes the installation and performance of three geotextile fabrics used to retard reflective cracking in an asphalt overlay test project.
Author:
Publisher:
ISBN:
Category :
Languages : en
Pages : 22
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Book Description
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).
