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Showing 1 to 20 of 412 for “"Pavements"”.
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Nondestructive Testing of Flexible Pavements
Made available in DSpace on 2014-12-13T19:31:53Z (GMT). No. of bitstreams: 1 7915436.pdf: 6807537 bytes, checksum: b36e1dff498563023bf3d71d83234b9e (MD5) Previous issue date: 1979
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Role of pavements in urban energetics
… of the day. To determine the contribution of pavements to the development of microscale UHI, two research aims were pursued: (a) the thermal and optical characterization of asphalt and concrete, and the factors that influence them; and (b) the development and validation of an urban climate …
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Y-cracking in continuously reinforced concrete pavements
When transverse cracks meander there is a high possibility for transverse cracks to meet at a point and connect to another transverse crack, creating a Y-crack. Y-cracks have been blamed for being the origin of punchouts and spallings in CRCPs. When the direction of maximum principal stress …
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Advances in Nondestructive Testing of Concrete Pavements
Nondestructive testing methods to accurately determine concrete pavement thickness are in increasing demand for verification of performance-based specifications, as the only current technology that provides the required accuracy levels is core extraction. In this work two approaches for pavement …
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PERMEABILITY AND MOISTURE DAMAGE CHARACTERISTICS OF ASPHALT PAVEMENTS
… survey is conducted to identify a set of eight pavements (bad) that are known to suffer from moisture damage and a set of eight pavements (good) that do not exhibit moisture damage. Field permeability testing is conducted on those 16 pavements. Results show that good performing pavements have …
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Evaluation of selected airport pavements in New Mexico
Rehabilitation of poor conditioned airport pavements can be very expensive compared to the rehabilitation of relatively good conditioned airport pavements. Determining the conditions of airport pavements is a first step to determine appropriate rehabilitation method and timing. In this study, the …
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Development of potholes from cracks in flexible pavements
Pothole is a localized loss of material or depression on road pavement surface. The development of cracks and the formation of potholes on road surface are widespread problems in road construction and maintenance. The objective of this study is to develop mathematical models to compute stresses and …
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Return to Traffic of Full Depth Reclamation Pavements
… rehabilitation treatment for deteriorated pavements. However, when using asphalt emulsion based rehabilitation techniques one of the most challenging aspects of FDR is determining when traffic can be returned to the rehabilitated pavement surface. Since asphalt emulsion mixtures need ample …
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Impact of pavements on the urban heat island
… during daytime. In the study of sustainable pavements, UHIs are studied under the use phase of a pavement Life Cycle Assessment (LCA) to quantify the impact of the pavement on the local heat budget and microclimate. To study UHI within a pavement LCA framework, two challenges were tackled. …
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Impact of reclaimed asphalt pavements on pavement sustainability
Highway pavements are one of the main building blocks of the United States infrastructure and economy. Asphalt concrete is the most common material to construct highway pavements. Billions of dollars are spent every year to maintain and rehabilitate two-million-mile the U.S. highway network. …
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Evaluation of bonded concrete overlays on asphalt pavements
… study of 19 bonded concrete overlays on asphalt pavements (BCOA) projects in 9 states were completed in this research study. BCOA pavements ranged in age from 7 to 26-years old and average thickness per project of 3.8 to 9.3 inches. The panel size varied from 4 ft x 4ft to 12 ft x 12 ft. The goal …
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Stochastic approach to the analysis of highway pavements.
Massachusetts Institute of Technology, Dept. of Civil Engineering. Thesis. 1971. M.S.
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Application of porous pavements in stormwater management practice
Porous pavements are examined for their ability to contribute to environmentally-sound stormwater management practice. The hydrological impacts of conventional urban land development are examined. New legislative directions in stormwater management are examined and a brief sun1Inary of currently …
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Life cycle cost analysis of asphalt and concrete pavements
… a life cycle cost analysis (LCCA) for road pavements and evaluates its impact on pavement type choice. Working from literature, historical data and interviews, the LCCA technique is described and an overview of the road and street system in Iceland is presented. The LCCA methodology …
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Evaluation of asphalt pavements construction practice in West Virginia
Construction practice is a key factor in building high quality pavement. Unfortunately failure and distresses frequently develop shortly after construction. These distresses may be due to the contractors failing to follow the guidelines and specifications. Monitoring pavement construction provides …
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Evaluation of interlayer bonding in hot mix asphalt pavements
… the level of interlayer bonding achieved in pavements. Data was obtained and used from the Federal Aviation Administration's (FAA) National Airport Pavement Test Facility located in Atlantic City, New Jersey. In this test facility, a section of the pavement had encountered a loss of bond …
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Modelling the Flushing Mechanism of Thin Flexible Surface Pavements
… the occurrence of flushing of chip seal pavements. The research aimed to determine the effects of volumetric properties of chip seal surfaces on flushing, focusing on the relationship between air voids and flushing initiation. Additionally, the research aimed to develop a pavement …
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