Efforts To Reduce Reflective Cracking Of Bituminous Concrete Overlays Of Portland Cement Concrete Pavements
DOWNLOAD
Download Efforts To Reduce Reflective Cracking Of Bituminous Concrete Overlays Of Portland Cement Concrete Pavements PDF/ePub or read online books in Mobi eBooks. Click Download or Read Online button to get Efforts To Reduce Reflective Cracking Of Bituminous Concrete Overlays Of Portland Cement Concrete Pavements book now. This website allows unlimited access to, at the time of writing, more than 1.5 million titles, including hundreds of thousands of titles in various foreign languages. If the content not found or just blank you must refresh this page
Efforts To Reduce Reflective Cracking Of Bituminous Concrete Overlays Of Portland Cement Concrete Pavements
DOWNLOAD
Author : Kenneth H. McGhee
language : en
Publisher:
Release Date : 1975
Efforts To Reduce Reflective Cracking Of Bituminous Concrete Overlays Of Portland Cement Concrete Pavements written by Kenneth H. McGhee and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 1975 with Pavements categories.
Studies of efforts in Virginia to reduce the incidence of reflection cracking when portland cement concrete pavements or bases are overlayed with asphaltic concrete are reported. The methods of reflection crack reduction discussed are: (1) The use of sand as a bond breaker between portland cement concrete pavements and asphaltic overlays, (2) the use of a high tensile strength fabric as a stress relieving layer between two asphaltic concrete overlays of an old portland cement concrete pavement on a weak subbase, and (3) the use of two types of fabric as stress relieving layers between asphaltic layers and a concrete base on a very strong subbase and subgrade. The following conclusions were drawn. 1. Neither sand as a bond breaker nor high strength fabrics as stress relieving layers are effective in reducing reflection cracking where vertical joint movement (differential deflection) is a significant factor. 2. When differential deflections are greater than about 0.002 in (0.05 mm) reflection cracks form early. Such cracking is delayed for lower differential deflection but may occur as the magnitude and frequency of wheel loadings increase. 3. Both an asphalt impregnated polypropylene fabric and an unwoven, spun-bonded nylon fabric, when placed to span joints in portland cement concrete base and covered with an asphaltic concrete, overlay, are able to sustain the formation of reflection cracking in the overlaying layer without undergoing damage. 4. An asphalt impregnated polypropylene fabric spanning the joints in portland cement concrete pavements, and placed between the pavement and an asphaltic overlay, may be effective in reducing the infiltration of surface water to pavement sub-layers. There is some evidence that pavement pumping may be reduced by this method. 5. Both an asphalt impregnated polypropylene fabric and an unwoven, spun-bonded nylon fabric can delay the formation of reflection cracking. There is strong evidence, however, that such cracking is fatigue in nature and will eventually develop under the application of repetitive wheel loadings.
Heavy Duty Membrane For The Reduction Of Reflective Cracking In Bituminous Concrete Overlays
DOWNLOAD
Author : GL. Hoffman
language : en
Publisher:
Release Date : 1985
Heavy Duty Membrane For The Reduction Of Reflective Cracking In Bituminous Concrete Overlays written by GL. Hoffman and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 1985 with Asphaltic overlays categories.
The prevalence of reflective cracking in asphaltic concrete overlays is a major factor contributing to the premature failure in the pavement system. This reflective cracking is caused by cyclic stresses induced in the overlay by movements in the underlying pavement. Recent work done with heavy duty membranes has shown that they may be useful in retarding this reflective crack formation. Seven different types of heavy duty membranes were placed over portland cement concrete pavement joints at a site in Pennsylvania before the roadway was overlayed with asphaltic concrete. Control sections, without any membranes, were also built into the project for comparison purposes. This work will evaluate the ability of these membranes to reduce the occurrence of reflective cracking over transverse and longitudinal joints and to function as a water stop once cracking has occurred.
Reflective Cracking In Pavements
DOWNLOAD
Author : L. Francken
language : en
Publisher: CRC Press
Release Date : 2004-06-02
Reflective Cracking In Pavements written by L. Francken and has been published by CRC Press this book supported file pdf, txt, epub, kindle and other format this book has been release on 2004-06-02 with Architecture categories.
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
Repair Of Concrete Pavements
DOWNLOAD
Author : National Research Council (U.S.). Highway Research Board. Annual Meeting
language : en
Publisher:
Release Date : 1962
Repair Of Concrete Pavements written by National Research Council (U.S.). Highway Research Board. Annual Meeting and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 1962 with Technology & Engineering categories.
Paper 1 evaluates the use of welded wire fabric reinforcement to alleviate rutting and/or shoving of pavement at intersections, and compares the effectiveness of extra thickness of asphaltic concrete overlays over portland cement concrete vs the use of welded wire reinforcement in the asphaltic concrete overlay to control reflection cracking in the asphaltic concrete surface. Paper 2 concerns a method of controlling reflection cracks in bituminous concrete overlays over the transverse joints of rigid pavements. Paper 3 concerns the experiences in district no. 4 of the New York State Department of Public Works with the salvage and restoration of old concrete pavements. Paper 4: Maintenance programs during the first 8 years of commercial airline operation at Willow Run Airfield are described.
Evaluation Of Several Methods For Minimizing Reflective Cracking In Bituminous Overlay Of Portland Cement Concrete Pavement
DOWNLOAD
Author :
language : en
Publisher:
Release Date : 1980
Evaluation Of Several Methods For Minimizing Reflective Cracking In Bituminous Overlay Of Portland Cement Concrete Pavement written by and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 1980 with categories.
Breaking Cracking And Seating Concrete Pavements
DOWNLOAD
Author : Marshall R. Thompson
language : en
Publisher:
Release Date : 1989
Breaking Cracking And Seating Concrete Pavements written by Marshall R. Thompson and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 1989 with Technology & Engineering categories.
This synthesis will be of interest to pavement designers, maintenance engineers, and others interested in reducing reflection cracking of asphalt overlays on portland cement concrete (PCC) pavement. Information is presented on the technique of breaking or cracking of the concrete pavement into small segments before overlaying with asphalt concrete. Asphalt concrete overlays on existing PCC pavements are subject to reflection cracking induced by thermal movements of PCC pavement. This report of the Transportation Research Board discusses the technique of breaking/cracking and seating of the existing PCC before an overlay as a means to reduce or eliminate reflection cracking.
User S Guide Cracking And Seating Of Portland Cement Concrete Pavements
DOWNLOAD
Author :
language : en
Publisher:
Release Date : 1992
User S Guide Cracking And Seating Of Portland Cement Concrete Pavements written by and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 1992 with categories.
Asphalt concrete overlays of a jointed or cracked portland cement concrete (PCC) pavement can develop reflective cracking because of either horizontal or vertical movement of the PCC. One method that can be used to reduce reflective cracking is to crack and seat the PCC prior to placement of the asphalt concrete overlay. The description, applicability, benefits, limitations, costs, recommended uses, and location of demonstration sites for cracking and seating technology are discussed.
Heavy Duty Membranes For The Reduction Of Reflective Cracking In Bituminous Concrete Overlays
DOWNLOAD
Author : M. Alaa Azab
language : en
Publisher:
Release Date : 1987
Heavy Duty Membranes For The Reduction Of Reflective Cracking In Bituminous Concrete Overlays written by M. Alaa Azab and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 1987 with Pavements categories.
A Rational Approach To The Prediction Of Reflective Cracking In Bituminous Overlays For Concrete Pavements
DOWNLOAD
Author : Thomas Bennert
language : en
Publisher:
Release Date : 2009
A Rational Approach To The Prediction Of Reflective Cracking In Bituminous Overlays For Concrete Pavements written by Thomas Bennert and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 2009 with Pavements, Asphalt concrete categories.
Hot mix asphalt (HMA) is used as the primary overlying material of concrete pavements during rehabilitation because of its inexpensive nature when compared to most Portland cement concrete (PCC) rehabilitation/reconstruction alternatives. However, due to the majority of the PCC pavements being in average to poor condition, many HMA overlays are exposed to extreme movements (both vertical and horizontal). The combination of associated load and environmentally induced movements creates complex stresses and strains in the vicinity of expansion joints and cracks in the PCC, thus dramatically reducing the life of the HMA overlay, typically in the form of reflective cracking. Reflective cracking is a fatigue cracking distress, which is initiated at the bottom of the HMA overlay and propagates to the surface. When the crack reaches the HMA overlay surface, not only does it affect the ride quality and overall integrity of the pavement surface, but it also creates a path for which water can migrate down into and below the PCC layer. This can ultimately reduce the overall structural support of the composite (HMA and PCC) pavement and result in a complete pavement failure. Medium to high severity reflective cracking results in poor surface conditions that could lead to poor driving conditions and higher accident rates. Therefore, this research is timely in that it not only addresses the structural integrity of the pavement system, but also the safety of the driving public, which is one of the main objectives of the administration at state agencies. To better understand the mechanisms associated with the development of reflective cracking, an extensive literature review was conducted. Analysis of the literature review indicated significant gaps in the current state of the practice in using bituminous overlays on PCC pavements. To fill in these gaps, a survey was developed, distributed to the state transportation agencies of all fifty states, and compiled to better define the scope of the research. The survey clearly identified that a major gap in the current state of the practice is linking the field conditions (climate, deflections, traffic levels) to appropriate laboratory testing protocols. Therefore, field test sections were selected with appropriate field forensic testing and traffic collection. During construction of the bituminous overlays, loose mix was collected and brought back to the laboratory for material characterization testing that would simulate the loading conditions associated with the respective test section. The research conducted during the development of this thesis has led to a rational approach in the prediction of reflective cracking potential in HMA overlays placed on PCC pavements. This methodology utilizes field forensic information that would normally be collected during the evaluation of the PCC/composite pavement prior to rehabilitation and laboratory fatigue and stiffness characterization of the HMA mixture(s), to predict the potential for reflective cracking in the bituminous overlay mixture(s). The extensive laboratory testing and field calibration/verification information utilized in the research has also led to "decision tree" methodology that would allow state agencies to properly select asphalt mixtures for overlaying PCC pavements.
The Use Of Fabric Reinforced Overlays To Control Reflection Cracking Of Composite Pavements
DOWNLOAD
Author : Kenneth H. McGhee
language : en
Publisher:
Release Date : 1973
The Use Of Fabric Reinforced Overlays To Control Reflection Cracking Of Composite Pavements written by Kenneth H. McGhee and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 1973 with categories.
Fabric reinforcement was used in an attempt to prevent reflection cracking of two bituminous concrete layers overlying an 8-inch plain (unreinforced, unjointed) concrete base that was underlain by a portland cement stabilized subbase material. On these pavements it was expected that the extremely rigid base and subbase layers would reduce vertical motion to a minimum. Similar pavements constructed with no overlay reinforcement readily showed reflection cracking in the bituminous layers, presumably because of horizontal, thermally induced movements of shrinkage cracks in the concrete base.