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Use of Bayesian Model Averaging to Estimate Model Uncertainty for Predicting Strain in a Four-Layered Flexible Pavement
Publisher: ASCE
Abstract: Because most of the numerical approaches are intensive in terms of computational effort and time, researchers have resorted to the use of surrogate models. For example, surrogate models for predicting the response of ...
Response Surface–Based Approach to Quantify Variability in Recycled-Asphalt Concrete Mixtures
Publisher: ASCE
Abstract: Due to the commercial and engineering value associated with old aggregates and aged asphalt binder, recycled asphalt pavement (RAP) usually is used in recycled asphalt concrete (RAC). However, the heterogeneity of RAP ...
Effect of Construction Methodology on Uncertainty in Asphalt Concrete Mastercurves
Publisher: American Society of Civil Engineers
Abstract: Viscoelastic properties [i.e., creep compliance D(t) and relaxation modulus E(t)] are significant input parameters in constitutive modeling of asphalt concrete (AC). Because application of input and recording the ...
SOM-and-GEP-Based Model for the Prediction of Foamed Bitumen Characteristics
Publisher: ASCE
Abstract: Due to significant interaction between properties of bitumen and test conditions, prediction of foamed bitumen characteristics [i.e., half-life (HL) and expansion ratio (ER)] is a challenging exercise. This work presents ...
Air Temperature Prediction Models for Pavements Based on the Gene Expression Programming Approach
Publisher: American Society of Civil Engineers
Abstract: As per the performance grading scheme, the selection of asphalt binder for a particular location requires information on seven-day maximum and one-day minimum pavement temperatures. Pavement surface temperatures are usually ...
Impact of RAP on the Volumetric, Stiffness, Strength, and Low-Temperature Properties of HMA
Publisher: American Society of Civil Engineers
Abstract: The increasing cost of virgin asphalt and aggregate has increased the interest in using higher percentages of recycled asphalt pavement (RAP) in hot mix asphalt (HMA) mixtures. The purpose of this research project was to ...
Impact of Chemical Composition on Foaming Characteristics of Asphalt Binder
Publisher: ASCE
Abstract: During the foamed bitumen production process, cold water is injected into hot bitumen within a closed chamber. Due to mixing of these fluids and transfer of heat energy, steam is generated. The dispersion of steam within ...