Results 181 to 190 of about 6,922 (209)
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Accelerated Life Modeling of Superpave Mixtures
T&DI Congress 2014, 2014This study focused on reducing duration of the Hamburg wheel-tracking device (HWTD) test. Four fine-graded Superpave mixtures with 12.5-mm Nominal Maximum Aggregate Size (NMAS) were selected for this study. The average number of wheel passes to a 20-mm rut depth in the HWTD tests was used to build accelerated life models with a Weibull distribution ...
C. Manandhar +3 more
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Optimization of Superpave Mixture Volumetric Properties
International Journal of Pavement Engineering, 2002The Kansas Department of Transportation (KDOT) currently monitors up to 19 parameters for the Superpave mixtures under its Quality Control/Quality Assurance (QC/QA) program. Data from six Superpave projects of KDOT was analyzed in this study to find the optimum combination of volumetric parameters, air voids and Voids in Mineral Aggregates (VMA), for ...
Mustaque Hossain, J.Z. Chen
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Field Conditioning of Superpave Asphalt Mixes
Transportation Research Record: Journal of the Transportation Research Board, 2001Failing volumetric properties (low air voids and voids in mineral aggregate) have been a common occurrence in the production of Superpave mixes in Florida and nationally. There are several potential causes of this problem including the effect of asphalt absorption as related to conditioning time.
James A. Musselman +2 more
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Flat and Elongated Aggregates in Superpave Regime
Journal of Materials in Civil Engineering, 2000Some states have recommended changing the definition of flat and elongated aggregates from 5:1 to 3:1 and an increase in the maximum allowable percentage of flat and elongated (F&E) particles to 20% or higher in the Superpave aggregate specification. Engineering justification and performance data are required to rationally establish the criteria for ...
Paul K. Oduroh +2 more
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Current Status of Superpave Binder Specification
Road Materials and Pavement Design, 2009(2009). Current Status of Superpave Binder Specification. Road Materials and Pavement Design: Vol. 10, SPECIAL ISSUE ON ASPHALT MATERIALS (ICAM 2009—China), pp. 13-24.
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Superpave Field Implementation: Florida’s Early Experience
Transportation Research Record: Journal of the Transportation Research Board, 1998Over the past 10 to 15 years, Interstate pavements in northern Florida have experienced a significant number of failures, primarily due to rutting. It was believed that the present fine-graded, 50-blow Marshall-designed mixes were inadequate to withstand current loading conditions.
James A. Musselman +3 more
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Performance of Superpave Projects in Louisiana
Transportation Research Record: Journal of the Transportation Research Board, 2011The Louisiana Department of Transportation and Development (Louisiana DOTD) initiated the implementation of the Superpave® system by the end of the past decade. This study evaluated 8 to 10 years of field performance of 21 Louisiana Superpave projects, which included five Interstates, four U.S. routes, and 12 Louisiana routes.
Md Sharear Kabir +3 more
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Evaluation of Permeability of Superpav® Asphalt Mixtures
Transportation Research Record: Journal of the Transportation Research Board, 2003The presence of water in a pavement system is detrimental to its life. Permeable asphalt concrete pavement structures are vulnerable to stripping, which causes premature damage under heavy traffic. To assess the permeability of asphalt mixtures, a research study was conducted at the Louisiana Transportation Research Center (LTRC).
Louay N. Mohammad +2 more
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Estimation of Lives of Deficient Superpave Pavements
Transportation Research Record: Journal of the Transportation Research Board, 2008Nonconforming Superpave® mixtures are often encountered during construction of asphalt-surfaced pavements in Kansas. There is no rational method available to find the potential reduction in life of these pavements. Results are presented for a study in which a methodology has been developed to estimate the lives of Superpave pavements that are out of ...
Chandra Manandhar +3 more
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Development of Superpave Direct Tension Test Device
Transportation Research Record: Journal of the Transportation Research Board, 1997The redesign and evaluation of the Superpave direct tension test (DTT) are described. The prototype of the DTT device was developed during the Strategic Highway Research Program (SHRP). The DTT device, an integral part of the new Superpave asphalt binder specification, was developed to test asphalt binders and determine their failure properties, such ...
Raj Dongré +2 more
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