A5081172345- Asphalt Pavement Performance Evaluation
- Infrastructure Maintenance and Monitoring
- Geotechnical Engineering and Underground Structures
- Transport Systems and Technology
- Innovative concrete reinforcement materials
- Geotechnical Engineering and Soil Stabilization
- Material Properties and Failure Mechanisms
- Fatigue and fracture mechanics
- Natural Fiber Reinforced Composites
- Smart Materials for Construction
- Optical measurement and interference techniques
- Numerical methods in engineering
- Structural Behavior of Reinforced Concrete
- Medical Image Segmentation Techniques
- Rock Mechanics and Modeling
- Materials Engineering and Processing
- Material Properties and Processing
- Advanced Vision and Imaging
- Occupational Health and Safety Research
- Concrete Properties and Behavior
- Concrete and Cement Materials Research
- Concrete Corrosion and Durability
- Flow Measurement and Analysis
- Vibration and Dynamic Analysis
- Bamboo properties and applications
North Carolina State University
2016-2025
ORCID
2020-2021
Chang'an University
2019
This study presents the results from an analytical and experimental on dynamic modulus testing of hot-mix asphalt using indirect tension (IDT) mode. An solution for in IDT mode was developed with use linear viscoelasticity. To verify solution, temperature frequency sweep tests were conducted 12 mixtures commonly used North Carolina; both axial compression test methods used. A modified protocol is introduced to reduce required time by more frequencies fewer temperatures basis time-temperature...
Defining failure and developing a unified criterion for the fatigue testing of asphalt materials remain challenge. This study seeks to develop binders under cyclic loading in dynamic shear rheometer. Newly developed pseudo-strain energy (PSE)-based analysis is introduced both time sweep test accelerated linear amplitude (LAS) (AASHTO TP101). The presented methodology builds upon recent advances simplified viscoelastic continuum damage (S-VECD) modelling mixtures. Trends stored PSE have been...
AbstractThe use of warm mix asphalt (WMA) has been increasing in recent years due to its ability reduce the production temperatures concrete. The long-term implications reduced and, hence, short-term ageing on performance remain largely unknown. This study evaluates effect age hardening WMA binders and mixtures compared with hot (HMA) respect fatigue damage. Two technologies are considered: foaming by water injection Evotherm modification. For this study, were subjected laboratory...
The failure criterion defines the applicable region associated with continuum damage model and is important in characterising service life of asphalt mixtures. A proper should consistently predict material that reaches macro-fracture. previously developed uses viscoelastic (VECD) exhibits high variability considered to be inefficient because it requires calibration tests at different temperatures. In this paper, a new concept involves released pseudo strain energy introduced. This focuses on...
This paper presents a new energy-based failure criterion that is based on the simplified viscoelastic continuum damage model. study found average reduction in pseudo stiffness up to failure, referred here as D R , material constant independent of mode loading, temperature, and stress/strain amplitude. Twenty different asphalt mixtures were used validate proposed method. typical values shows changes with mixture characteristics. The advantages over previous (known G criterion) are it: (1)...
Ageing has long been recognised as a major distress mechanism for asphalt concrete and, by extension, pavements. causes the material to stiffen and embrittle, which leads high potential cracking. Although significant amount of effort placed on understanding ageing process binder, less put forth develop laboratory procedures producing aged mixture specimens performance testing. An optimal conditioning procedure simulate long-term testing prediction is required in order integrate effects...
Reliable predictions of asphalt materials and pavement performance are important elements in mixture design, mechanistic-empirical performance-related specifications. This paper presents FlexPAVE™, a prediction program. FlexPAVE™ is three-dimensional finite element program that capable moving load analysis under realistic climatic conditions. It utilizes the simplified viscoelastic continuum damage (S-VECD) model to predict fatigue life. S-VECD currently incorporates so-called G R failure...
Fatigue cracking is one of the major distresses in asphalt pavements. Engineers have used many methods, from sophisticated numerical simulations to experience-based knowledge, address fatigue and deliver pavements that perform well. One strategy has become increasingly widespread use a index parameter identifies potential mixtures independent pavement structure. The such indices allows engineers make quick targeted decisions with regard mix design, acceptance, quality assurance. This paper...
The use of index parameters to evaluate the performance asphalt mixtures has become an important process for making informed pavement material decisions. These are indicators mixture and thus widely used in paving industry. This paper presents a new rutting parameter assess resistance using stress sweep test permanent deformation shift model. proposed parameter, referred as Rutting Strain Index (RSI), is novel that it integrates testing structural simulations. To develop RSI more than 70...
This paper aims to establish the relationship between volumetric performance of asphalt mixtures and their in relation pavement fatigue cracking rutting. A good performance-volumetric (PVR) can dramatically improve working efficiency be used future performance-engineered mixture design performance-related specifications. For this study, three were first designed incorporate systematic changes conditions, then rutting tests conducted at each condition. Statistical analyses results suggest...
Oxidative age hardening in asphalt binder leads to embrittlement. Embrittled is prone fatigue and thermal cracking. Therefore, the ability predict oxidative within a pavement throughout its service life could inform improved material selection, design, maintenance practices. Studying evolution of aging requires use key properties track oxidation levels, termed index (AIPs) here. The objective this study identify suitable rheological chemical AIPs levels materials. A wide range laboratory...
In this study, the fatigue performance of 12 plant-produced mixtures from New Hampshire and Vermont that contain reclaimed asphalt pavement (RAP) contents 0–40% by total weight mixture was evaluated. The tests included dynamic modulus, uniaxial fatigue, beam overlay tests. Also, simplified viscoelastic continuum damage (S-VECD) model failure criterion, called GR method, applied input to linear analysis for critical distresses (LVECD) programme predict behaviour tested on thin thick...