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Effects of Dwell Time and Loading Rate on the Nanoindentation Behavior of Asphaltic Materials
Publisher: American Society of Civil Engineers
Abstract: In a nanoindentation test, a test sample is indented or loaded by an intender tip and then unloaded, and the load-displacement data are recorded. Load-displacement data are then analyzed using a common method to determine ...
Evaluating the Relationship between Permeability and Moisture Damage of Asphalt Concrete Pavements
Publisher: American Society of Civil Engineers
Abstract: Limiting the presence of water inside an asphalt concrete (AC) pavement can slow down the process involved in water diffusion, hydration, adhesion loss, and other mechanisms of moisture damage. In the past, numerous studies ...
Design of Optimal Perpetual Pavement Structure
Publisher: American Society of Civil Engineers
Abstract: In this study, combinations of layer, stiffness, and thickness that produce an optimal perpetual pavement are determined for implementation on New Mexico State highways. Using a number of trial designs in the Mechanistic-Empirical ...
Using a Neural Network Model to Assess the Effect of Antistripping Agents on the Performance of Moisture-Conditioned Asphalt
Publisher: American Society of Civil Engineers
Abstract: Moisture damage in asphalt is one of the prime concerns for flexible pavements degradation worldwide. Many of the pavement distresses are the direct and indirect outcomes of the moisture intrusion in asphalt pavement. This ...
Developing Temperature-Induced Fatigue Model of Asphalt Concrete for Better Prediction of Alligator Cracking
Publisher: American Society of Civil Engineers
Abstract: Currently, the fatigue performance of asphalt concrete (AC) is predicted according to repeated traffic-induced tensile strain at the bottom of AC layer. Cyclic thermal strain caused by day-night temperature fluctuation is ...
Rheological Examination of Aging in Polymer-Modified Asphalt
Publisher: American Society of Civil Engineers
Abstract: Polymers are commonly used to modify asphalt binder in order to satisfy the performance-grade binder’s rheological properties, such as shear, storage, loss, and bending stiffness. However, it is not known what types and ...
Nanoscale Evaluation of Moisture Damage in Polymer Modified Asphalts
Publisher: American Society of Civil Engineers
Abstract: The moisture damage in polymer modified asphalts has been studied for decades, yet the effects of chemical functional groups on moisture sensitivity are not known. In this study, a nanoscale experiment is conducted to ...
Coefficients of Thermal Contraction and Expansion of Asphalt Concrete in the Laboratory
Publisher: American Society of Civil Engineers
Abstract: The research reported in this paper investigates the coefficient of thermal contraction (CTE) and coefficient of thermal expansion (CTE) of asphalt concrete (AC) under different conditions in the laboratory. As a first ...
Precision Study for Dynamic Modulus Testing of Asphalt Concrete Using Independent Assurance Testing
Publisher: American Society of Civil Engineers
Abstract: In this study, a precision study for dynamic modulus (