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Development of a New Performance Indicator to Evaluate Resistance of Asphalt Mixes to Cracking
Publisher: ASCE
Abstract: Several monotonic performance indicators that use one or more elements of the load–displacement curve (e.g., area under the curve, curve peak) are used to assess the resistance of asphalt mix to cracking. While these ...
Estimation of Resilient Modulus Constitutive Model Parameters for Unbound Coarse Materials for MEPDG
Publisher: ASCE
Abstract: In this study, 18 different unbound aggregates were collected from various locations of Idaho and several characterization tests were conducted in the laboratory. The resilient modulus of these collected aggregates was ...
Evaluating Alkali-Silica Reactivity of Aggregates Using the New Miniature Concrete Prism Test and Other Standard Test Methods
Publisher: ASCE
Abstract: The alkali-silica reaction (ASR) has been recognized as a major distress in concrete for nearly a century. In the US, ASR is a major cause of the deterioration of highway concrete structures (i.e., bridges and pavements). ...
Stochastic Identification of Linear-Viscoelastic Models of Aged and Unaged Asphalt Mixtures
Publisher: American Society of Civil Engineers
Abstract: The behavior of asphalt mixtures is typically described using linear viscoelastic models at low-strain applications. The time and temperature dependency of asphalt mixture properties is described by forming a master curve ...
Method for Predicting the Laboratory Compaction Behavior of Asphalt Mixtures
Publisher: American Society of Civil Engineers
Abstract: The quality of compaction significantly influences the performance of asphalt mixtures. Insufficient compaction often leads to excessive premature permanent deformation, excessive aging, and/or moisture damage. The research ...
Evaluation of Full-Depth Asphalt Pavement Construction Using X-Ray Computed Tomography and Ground Penetrating Radar
Publisher: American Society of Civil Engineers
Abstract: In the past few years, a number of full-depth or perpetual pavements have been designed and constructed in the State of Texas. A study was conducted to examine the quality of the compaction of the thick asphalt layers ...
Comparative Characterization of Field and Laboratory-Aged Binders Modified with Antioxidant Additives and Copolymers Using Fourier Transform Infrared Spectroscopy and Gel Permeation Chromatography
Publisher: ASCE
Abstract: This study investigates the behavior of antioxidant additives and copolymers to an asphalt binder by comparing laboratory-aged (up to 60 h) and antioxidant-modified binders with binders extracted from field cores. To ...
Summary Resilient Modulus Prediction Model for Unbound Coarse Materials
Publisher: ASCE
Abstract: The resilient modulus of base and subbase layers is a needed parameter in mechanistic pavement analysis and design. The standard test procedure for measuring the resilient modulus is complex and the setup may not be available ...
Quantification of Damage in the Dynamic Complex Modulus and Flow Number Tests Using X-Ray Computed Tomography
Publisher: American Society of Civil Engineers
Abstract: The dynamic modulus test is conducted based on the assumption that no damage is induced during the testing process and that measurements are conducted within the linear viscoelastic region. In addition, the level of damage ...
Three-Dimensional Microstructural Modeling Framework for Dense-Graded Asphalt Concrete Using a Coupled Viscoelastic, Viscoplastic, and Viscodamage Model
Publisher: American Society of Civil Engineers
Abstract: This paper presents a three-dimensional (3D) image-based microstructural computational modeling framework to predict the thermoviscoelastic, thermoviscoplastic, and thermoviscodamage response of asphalt concrete. X-ray ...