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RISRheological Properties at Low Temperatures and Chemical Analysis of a Composite Asphalt Modified with Polyphosphoric Acid
Publisher: ASCE
Abstract: This work improved the low-temperature rheological properties of asphalt modified with styrene butadiene styrene (SBS) using an acid modifier, namely polyphosphoric acid (PPA), and investigated the microstructural changes ...
Low-Temperature Reversible Aging Properties of Selected Asphalt Binders Based on Thermal Analysis
Publisher: American Society of Civil Engineers
Abstract: The objectives of this paper are twofold: (1) Investigate the low-temperature reversible aging discrepancy mechanism of the asphalt binders with similar regular low-temperature performance grade; and (2) evaluate ...
Direct Observation of Crystalline Wax in Asphalt Binders by Variable-Temperature Polarizing Microscope
Publisher: ASCE
Abstract: Crystalline wax in asphalt binder greatly affects the low-temperature performance of the asphalt pavement, and the composition of the phase separation at the microscopic scale has not been completely determined. In this ...
Quantification of Recycled Engine Oil Bottoms in Asphalt Binder Using Nuclear Magnetic Resonance Techniques
Publisher: ASCE
Abstract: Recycled engine oil bottoms (REOBs) are widely used in asphalt binders for modification and cost saving. However, more early road failures have appeared on the pavements constructed with REOB-modified asphalt binders in ...
Asphalt Concrete for High-Speed Railway Infrastructure and Performance Comparisons
Publisher: American Society of Civil Engineers
Abstract: This paper presents the results of a laboratory investigation on the performances and mixture combination parameters of railway asphalt concrete (RAC) for supporting high-speed railway slab track. To apply the RAC effectively ...
Asphalt Concrete for High-Speed Railway Infrastructure and Performance Comparisons
Publisher: American Society of Civil Engineers
Abstract: This paper presents the results of a laboratory investigation on the performances and mixture combination parameters of railway asphalt concrete (RAC) for supporting high-speed railway slab track. To apply the RAC effectively ...
Nonlinear Rheological Characterizations of Reactive Elastomeric Terpolymer-Modified Asphalt Binder Based on Large-Amplitude Oscillatory Shear Test
Publisher: ASCE
Abstract: In this paper, we investigated the nonlinear rheological behavior of two types of modified asphalt binders, namely reactive elastomeric terpolymer-modified asphalt binder (REA) and styrene-butadiene-styrene–modified asphalt ...
Policy Gradient–Based Focal Loss to Reduce False Negative Errors of Convolutional Neural Networks for Pavement Crack Segmentation
Publisher: American Society of Civil Engineers
Abstract: Convolutional neural networks (CNNs) have achieved tremendous success in pavement crack segmentation. However, it is difficult for CNN-based crack segmentation methods to minimize false-negative and false-positive errors. ...
Introduction of New Salt Storage Fiber to Achieve Sustainable Deicing in Asphalt Pavements
Publisher: ASCE
Abstract: The large temperature differences between day and night in winter at plateau areas can lead to the reduction of skid resistance of roads. However, most of the traditional salt storage and deicing fillers are chlorides, and ...