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Recommended Calibration Procedure of MEPDG Asphalt Rutting Model Using Repeated Load Permanent Deformation and Confined and Unconfined Dynamic Modulus Data
Publisher: ASCE
Abstract: The repeated load permanent deformation (RLPD) test is recognized as the most appropriate laboratory procedure to characterize rutting in asphalt mixtures. It is currently used in support of the calibration of the rutting ...
Effect of Devulcanized Rubber Modification on the Performance Grade, Fatigue Cracking Resistance, and Rutting Resistance of Asphalt Binders
Publisher: ASCE
Abstract: Modification of asphalt binders has been one of the common techniques to overcome the climatic and traffic-related distresses that develop in bituminous materials. Over the past decade, many new methods of incorporating ...
Comparative Investigation of Hot-Applied and Emulsion-Based Chip Seal Treatments Using Image Processing Techniques and Performance Tests
Publisher: ASCE
Abstract: Chip seal can be constructed by using either hot-applied binder or emulsion. Some road agencies use hot-applied binder, whereas others use emulsion. Road agencies sometimes face challenges in choosing the right application ...
The Neutral Axis Concept in Asphalt Pavement Analysis
Publisher: American Society of Civil Engineers
Abstract: The neutral axis concept is a fundamental and useful entity in elastic beamlike and platelike structures (where it is called the neutral surface). It distinguishes between tensile and compressive zones, governs how moments ...
Novel Testing Procedure for Assessment of Quality of Foamed Warm Mix Asphalt Binders
Publisher: American Society of Civil Engineers
Abstract: This paper presents an image-based testing system called the asphalt foam collapse test (AFCT) to measure parameters that indicate the quality of foamed warm mix asphalt (WMA) binders. The AFCT was used to measure and ...
Investigation of Moisture Dissipation in Foam-Based Warm Mix Asphalt Using Synchrotron-Based X-Ray Microtomography
Publisher: American Society of Civil Engineers
Abstract: Foam-based Warm Mix Asphalt (WMA) technologies decrease the viscosity of the asphalt so that it is workable during construction. However, after construction, viscosity increases rapidly as the foam disappears and temperature ...
Dynamic Effects on Moisture Transport in Asphalt Concrete
Publisher: American Society of Civil Engineers
Abstract: Permeability of an asphalt pavement is one of the most important parameters that have a direct influence on its design life. It is an intrinsic property that relates the average fluid velocity to a constant pressure gradient; ...
Comparison of Linear Viscoelastic Properties of Crumb Rubber–Modified Binders Measured Using Parallel-Plate and Concentric Cylinder Geometries with Asphalt Mixture Dynamic Modulus
Publisher: ASCE
Abstract: Rubber particles can become compressed during testing of asphalt binders modified with crumb rubber (CR) in dynamic shear rheometer (DSR) parallel-plate geometry. This is especially true at high concentrations and/or large ...
Analysis of Factors Affecting Strain Distribution in Geosynthetics
Publisher: American Society of Civil Engineers
Abstract: Localized strains due to production defects, seams, and punctured zones significantly affect mechanical performance of geosynthetic materials. Accurate determination of localized strains becomes particularly important for ...
Development of Predictive Models for Low-Temperature Indirect Tensile Strength of Asphalt Mixtures
Publisher: American Society of Civil Engineers