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Showing 1 to 20 of 28 for “"Pavement materials"”.
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A more comprehensive life cycle cost analysis of pavement materials alternatives
… investments. The initial and life-cycle materials costs associated with highway construction involve a high level of uncertainty and therefore warrant extensive and dynamic cost analysis. These uncertainties derive from extensive materials usage costs. Despite the advantages of …
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Performance of advera® warm mix asphalt with reclaimed asphalt pavement materials
… additive named Advera®. Reclaimed asphalt pavement (RAP) and warm mix asphalt (WMA) have become the alternative materials and methods for enhancing sustainability in the asphalt industry. This study aims to determine the optimal warm mix additive and RAP through several laboratories tests. …
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Development of a performance-based test method for quantification of cracking potential in asphalt pavement materials
With the increasing use of recycled materials in the construction of roadways, it is more critical now than ever to understand the impact that these materials have on pavement behavior and performance. Since recycled materials tend to, in general, behave in a more brittle fashion, a primary area of …
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Evaluation of viscous effects in crack tip fields in recycled asphalt pavement materials using digital image correlation
In this work, we investigated the fracture behavior of asphalt, a heterogeneous mixture of hard aggregates (usually rock) with a polymeric binder (also called asphalt), used in paving applications. Specifically we studied the dependence of asphalt fracture response on loading rate, temperature, and …
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Exploring the Black Space of Compressive and Shear Modulus
… determine the viscoelastic behavior of asphalt pavement materials, with the standard analysis generating a Master Curve. One alternative to the master curve approach is a Black Space diagram, which is a rheological plot that can delineate either dynamic modulus |E*| or shear modulus |G*| vs. …
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Efeito da temperatura na deformabilidade dos pavimentos asfálticos
… influence on the behavior of the asphalt pavements and countains the following steps: First, we determine the temperature profile in the surface by using its thermal properties and climatic factors, acoording to Barber's theory. Second, we define the resilient properties of the several …
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Incorporating Recycled Plastics in Asphalt Binders and Mixtures
… has been tested in different construction materials such as soil, concrete, and pavement materials to enhance the engineering properties of those materials and reduce the amount of plastic accumulating in landfills. Plastics have been tested in pavement materials as binder modifiers, binder …
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Benchmarking Pavement Environmental Performance Using Data-Driven Modeling and Policy
… embodied emissions coming from the production of materials. However, pavement materials impact emissions throughout the pavement lifecycle, not just during production. This paper addresses how a new pavement evaluation system and policy framework might drive better solutions to reduce carbon …
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The development of a regional inventory database for the material phase of the pavement life-cycle with updated vehicle emission factors using moves
… the past few decades, the growing interest in pavement sustainability has led researchers in government agencies, industries, and academia to develop various sustainability rating systems and life-cycle assessment (LCA) tools for roadways and pavements. However, many of the existing pavement …
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Examination of the Correlation between Shear Strength, California Bearing Ratio, and Index Properties of Fine-grained Soil
… (CBR) is used to evaluate the strength of the pavement materials by comparing bearing capacity of the material with that of a high-quality crushed stone. This test adopted by transportation agencies and widely used in the design and analysis of pavement. Several agencies developed design …
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An improved backcalculation method to predict flexible pavement layers moduli and bonding condition between wearing course and base course.
… procedure, for the determination of flexible pavement properties from the Falling Weight Deflectometer (FWD) test results. The conventional backcalculation methods estimate the pavement layer moduli assuming full adhesion exists between layers in the analysis process. The method developed in …
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Development of an alternative test to obtain asphalt mixture creep compliance at low temperatures
… creep compliance tests are widely used in the pavement materials community to characterize the low temperature fracture and creep properties of asphalt materials. The information from these tests enables pavement engineers to design and construct asphalt pavements that can withstand the …
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Evaluating the Mechanical Properties and Long-Term Performance of Stabilized Full-Depth Reclamation Base Materials
… solution is full-depth reclamation (FDR), a pavement rehabilitation technique that involves pulverizing and reusing materials from existing distressed pavements in place. There is, however, limited information on the long-term properties of these recycled materials. One important property, …
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Contributions to predicting contaminant leaching from secondary materials used in roads
<p>Slags, coal ashes, and other secondary materials can be used in road construction. Both traditional and secondary materials used in roads may contain contaminants that may leach and pollute the groundwater. The goal of this research was to further the understanding of leaching and transport of …
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Evaluating the Mechanical Properties and Long-Term Performance of Stabilized Full-Depth Reclamation Base Materials
… solution is full-depth reclamation (FDR), a pavement rehabilitation technique that involves pulverizing and reusing materials from existing distressed pavements in place. There is, however, limited information on the long-term properties of these recycled materials. One important property, …
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Moisture effects on the mechanical behavior of flexible pavement subgrades
<p>All pavement materials contain moisture in various forms and amounts. The effects of moisture on the mechanical behavior of these materials vary from small for some bound materials to very significant for some fine grained soils. Moisture effects become critical particularly during the spring …
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Pavement sustainability optimization using quarry by-products and geosynthetics
… associated with construction and production of materials used in pavement construction. The increased aggregate demand by the construction industry has resulted in increased production of quarry by-products (QB) and overall energy consumption because of the production of aggregates. The use of …
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Quantitative sustainability assessment of pavement-vehicle interaction : from bench-top experiments to integrated road network analysis
… Beside surface texture and roughness-induced Pavement-Vehicle Interactions (PVI), we herein recognize that the dissipation of mechanical work provided by the vehicle due to viscous deformation within the pavement structure is a relevant factor contributing to the environmental footprint of …
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