Development and validation of performance prediction models and specifications for asphalt binders and paving mixes
01 Oct 1993-
TL;DR: The SHRP A-005 project developed detailed pavement performance models to support these binder and mixture specifications and performance-based mixture designs as mentioned in this paper, which can predict the amount of fatigue cracking, thermal cracking and rutting in asphalt concrete pavements.
Abstract: A result of the Strategic Highway Research Program's asphalt research is the development of performance-based specifications for asphalt binders and mixtures to control 3 distress modes: rutting; fatigue cracking; and thermal cracking. The SHRP A-005 project developed detailed pavement performance models to support these binder and mixture specifications and performance-based mixture designs. This report documents the findings of this extensive research effort and provides supporting data for the performance-based specifications and mixture design procedure called SUPERPAVE. The A-005 contract developed and used a sophisticated, mechanistic-based pavement performance model to define the relationships between asphalt binder and mixture properties and pavement distress. A comprehensive pavement performance model was developed that predicts the amount of fatigue cracking, thermal cracking and rutting in asphalt concrete pavements with time, using results from the accelerated laboratory tests. The pavement performance models for each distress were also used to confirm the relevant binder and mixture properties established by other SHRP contractors. The model has 3 parts: a mixture evaluation model; a pavement response model; and a pavement distress model.
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TL;DR: In this paper, a unique rheological model has been developed for the modeling of linear viscoelastic properties of both bituminous binders and mixes, which consists of a generalization of the Huet-Sayegh analogical model.
Abstract: A research including a large experimental campaign on the characterization of the viscoelastic behavior of different bituminous materials was developed. The aim is to establish the links between the viscoelastic properties (which are observed in the small strain domain) of binders and those of bituminous mixes. The viscoelastic behavior of bituminous binders and mixes has been studied by performing complex modulus tests at different temperatures and frequencies. A unique rheological model has been developed for the modeling of linear viscoelastic properties of both bituminous binders and mixes. This model consists of a generalization of the Huet-Sayegh analogical model. Analyses on test data for nine different binders and four mixes, with one mix design, show that the introduced model fits quite well the measurements. Finally, from our first results, a transformation that is independent of the introduced model allows to predict easily and efficiently the mix complex modulus from the binder one.
400 citations
Cites methods from "Development and validation of perfo..."
...Examples of analytical expressions for bituminous mixtures In the framework of Superpave works, a version of the power law has been used throughout the report SHRP-A-357 [LYT 93] in modeling the linear viscoelastic behavior of bituminous mixes....
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...Examples of analytical expressions for bituminous mixtures In the framework of Superpave works, a version of the power law has been used throughout the report SHRP-A-357 [LYT 93] in modeling the linear viscoelastic behavior of bituminous mixes....
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...[LYT 93] LYTTON, R.L., UZAN, J., FERNANDO, E.G., ROQUE, R., HILTUNEN, D., STOFFELS, S.M., “Development and Validation of Performance Prediction Models and Specifications for Asphalt Binders and Paving Mixes”, SHRP-A-357, Strategic Highway Research Program , National Research Council, Washington, DC, 1993....
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TL;DR: In this paper, a 2S2P1D model was developed for the modeling of linear viscoelastic properties of both bituminous binders and mixes, which is a generalization of the Huet-Sayegh analogical model.
Abstract: A large experimental campaign on the characterization of the linear viscoelastic behaviour of different bituminous materials was carried out. The goal was to establish the links between the linear viscoelastic properties (which are observed in the small strain domain) of binders and those of bituminous mixes. The linear viscoelastic behaviour of bituminous binders and mixes was studied by performing complex modulus tests at different temperatures and frequencies. A unique rheological model (called “2S2P1D model”) was developed for the modelling of linear viscoelastic properties of both bituminous binders and mixes. This model consists of a generalization of the Huet-Sayegh analogical model. Analyses on test data for five binders and different mastic and mix composition, show that the introduced model fits quite well the measurements. Finally, from our first results, a transformation that is independent of the introduced model allows the mix complex modulus to be predicted easily and efficiently f...
272 citations
01 Jul 1994
TL;DR: The Strategic Highway Research Program (SHRP) was a highly focused, ambitious research effort that targeted four specific areas for intense study over the time frame from 1987 to 1993 as mentioned in this paper, and asphalt was one of the four study areas.
Abstract: The Strategic Highway Research Program (SHRP) was a highly focused, ambitious research effort that targeted four specific areas for intense study over the time frame from 1987 to 1993. Asphalt was one of the four study areas. This report describes the Superpave system, the final product of the asphalt research program; and the various parts that comprise its operational characteristics. In all, the final report of the SHRP Asphalt Research Program consists of five parts, the contents of which are briefly described in this report. Reference is made within this report to specific details within the other four parts for readers who want a more detailed description of the methodology, test methods, and theory behind Superpave.
196 citations
TL;DR: In this paper, hydrated lime is evaluated as a filler in bitumen and is compared to similarly sized filler comprised of calcium carbonate, limestone, and limestone-concrete.
Abstract: Hydrated lime is evaluated as a filler in bitumen and is compared to similarly sized filler comprised of calcium carbonate, limestone. Extensive laboratory testing is considered, including rheological testing of mastics (with a dynamic shear rheometer, a dynamic mechanical analyzer, and a bending beam rheometer); low temperature elongation and fracture tests on mastics; torsional fatigue testing of mastics; fatigue testing of mixtures; and permanent deformation testing of mixtures. These tests confirm that hydrated lime as a filler significantly impacts the rate and level of microcrack-induced damage, microdamage healing, and plastic and viscoelastic flow in both mastics and mixtures across a wide range of temperatures (from low to high temperatures, representative of the pavement environment). Hypotheses are presented based on rheological models of filled liquids and bitumen microstructure to explain the test results and the fact that the response of hydrated lime as a filler in bitumen requires an understanding of the physical and chemical interactions on both the micro- and nanoscale. Furthermore, the impact of hydrated lime as a filler is dependent on its interaction with a specific bitumen.
194 citations
TL;DR: In this article, a review of key parameters that influence measurement and modeling of skid resistance of asphalt pavements is provided, and the current harmonization method of friction measurements questioned.
194 citations