Han-Cheng Dan

Han-Cheng Dan
Central South University | CSU · School of Civil Engineering

Ph.D

About

89
Publications
25,226
Reads
How we measure 'reads'
A 'read' is counted each time someone views a publication summary (such as the title, abstract, and list of authors), clicks on a figure, or views or downloads the full-text. Learn more
939
Citations
Additional affiliations
November 2011 - present
Central South University
Position
  • PostDoc Position
September 2009 - October 2010
The University of Queensland
Position
  • Researcher

Publications

Publications (89)
Article
Full-text available
Currently, time to drain and depth of flow are the two basic concepts for designing the drainage layer of highway, both of which are based on the saturated flow and cannot reasonably evaluate the drainage efficiency of drainage layer. A recent study demonstrated that capillary effects could become significant with unsaturated flow playing an import...
Article
Full-text available
In order to study the water flow in the drainage layer of highway under steady-state condition, one-dimensional (1D) Boussinesq equation-based model with Dupuit-Forchheimer assumption was established and the semi-analytical solutions to predict the water-table height were presented. In order to validate the model, a two-dimensional (2D) saturated f...
Article
This paper aims to examine capillarity effect on flows in the drainage layer of highway pavement. A two-dimensional (2-D) model based on the Richards equation was used to simulate saturated and unsaturated flows in the drainage layer. For comparison, flows were also simulated using a 1-D Boussinesq equation based model and a 2-D model based on the...
Article
The current engineering design of the highway drainage layer is typically based on the groundwater table elevation predicted by saturated flow models. Capillary effects may become significant, with unsaturated flow playing an important role in conducting water out of the drainage layer. With the capillarity neglected, saturated flow models such as...
Article
Full-text available
Currently, people pay more and more attention to road maintenance, and the traffic characteristics of vehicles play an important role in road quality evolution and maintenance decision, which commonly depends on the collection and analysis of traffic data. Nevertheless, the rationality of traffic data analysis and the scientificity of maintenance d...
Article
The single-edge notched bend (SENB) test has been widely employed to characterize the low-temperature fracture characteristics of asphalt mixtures. In this test, the pre-fabricated notch is typically fixed at the beam midline, but variation in its location has a significant impact on the resulted crack resistance. This study utilized the three-dime...
Article
The mean texture depth (MTD) of asphalt pavement surface is an important indicator of skid resistance of asphalt pavement. This paper aimed to analyze the wearing behavior of asphalt mixtures under repetitive tire loads using discrete element modeling (DEM). An algorithm was developed to generate the two-dimensional (2D) microstructure of an asphal...
Article
This study aims to investigate the dynamic response regulation by combining the theoretical analysis and field test under the vibration rolling condition. Based on the viscoelastic theory of a multilayer system, the dynamic stiffness method (DSM) incorporating multidimensional Fourier transform is proposed to solve the 3-dimensional (3D) dynamic re...
Article
The depth of an asphalt pavement structure is an important index used to reflect the anti-skid performance of the pavement, which directly affects the driving safety of vehicles. In the current specifications (e.g., China, European and American standards), the mean texture depth (MTD) of an asphalt pavement is generally measured by the sand-patch m...
Article
Full-text available
Pavement temperature field affects pavement service life and the thermal environment the near road surface; thus, is important for sustainable pavement design. This paper developed a combined prediction method for the thermal conductivity of asphalt concrete based on meso-structure and renormalization technology, which is critical for determining t...
Article
Full-text available
Image recognition based on deep learning generally demands a huge sample size for training, for which the image labeling becomes inevitably laborious and time-consuming. In the case of evaluating the pavement quality condition, many pavement distress patching images would need manual screening and labeling, meanwhile the subjectivity of the labelin...
Article
Porous asphalt concrete (PAC) is prone to fatigue cracking and moisture damage due to its open gradation and high air voids. This study presented a systematic evaluation of the role of moisture damage on the fatigue performance of PAC. The mixture was designed with a high-viscosity modified asphalt and target air void of 20%. Moisture damage was in...
Article
Reliable pavement surface temperature prediction models are important for decision making in winter road maintenance. Due to the complexity of thermal environment in winter, there is inevitably uncertainty in pavement temperature. Therefore, the prediction results of pavement surface temperature should not be a single value, but a probability distr...
Article
Full-text available
Sustainable and resilient pavement infrastructure is critical for current economic and environmental challenges. In the past 10 years, the pavement infrastructure strongly supports the rapid development of the global social economy. New theories, new methods, new technologies and new materials related to pavement engineering are emerging. Deteriora...
Article
This study investigated the fatigue behavior of a porous asphalt mixture (PAM) considering the effect of moisture damage. The PAM was designed with a high-viscosity asphalt and target air void of 20%. Moisture damage was induced through freeze–thaw (F-T) conditioning with 1, 3, 5, 10, and 15 cycles, and was quantified in terms of loss in the indire...
Article
Full-text available
To investigate the quantitative influence of the material gradation characteristics, saturation degree and loading frequency on the permanent deformation of porous asphalt (PA) mixtures under temperature, loading, and hydraulic coupling conditions, a hydraulic coupling repeated loading test is conducted for five types of PA mixtures with different...
Article
The paper proposes a closed-form dynamic stiffness (DS) formulation for exact transverse free vibration analysis of tapered and/or functionally graded beams based on Euler–Bernoulli theory. The novelties lie in both the DS formulation and the solution technique. For the formulation, the developed DS is applicable to a wide range of non-uniform beam...
Article
An important factor that affects the performance and durability of asphalt–aggregate mixtures is the size distribution of the aggregate particles. However, there are no accurate and quick methods of obtaining this information currently available. A potential solution to this problem is to use computer-aided image recognition technology, a technique...
Article
The coefficient of thermal expansion (CTE) and contraction (CTC) are critical parameters for pavement design and thermal analysis. This paper develops a 3-D microstructure-based FE model to evaluate the CTE and CTC of asphalt concrete. The 3-D random microstructure of asphalt concrete was generated with an image-aided algorithm. In the presented al...
Article
Vibrating compaction is a critical procedure to guarantee the quality of asphalt pavement, and the dynamic response of asphalt pavement is a complicate problem in the process of vibration rolling. This paper aims to theoretically investigate the dynamic response regulation and influencing factors of pavement under the moving vibration load. Firstly...
Article
An exact dynamic stiffness method is proposed for the free vibration analysis of multi-body systems consisting of flexible beams and rigid bodies. The theory is sufficiently general in that the rigid bodies can be of any shape or size, but importantly, the theory permits connections of the rigid bodies to any number beams at any arbitrary points an...
Article
Compaction degree is an essential parameter to characterize the construction quality and performance of asphalt pavement. Under the same compaction conditions, asphalt mixtures with different aggregate sizes and gradation may exhibit different compaction characteristics. Accordingly, this paper aims to study the compaction characteristics of asphal...
Article
Full-text available
Mechanical deicing is a method to remove the ice on the pavement surface, and the ice strength directly affects the difficulty and effectiveness of the mechanical deicing. This paper aims to investigate the compression strength of ice to facilitate the deicing equipment to crush ice. In this paper, a large-scale freezing laboratory is employed to s...
Article
Phase change materials (PCMs) can regulate the temperature of asphalt pavement through latent thermal energy storage. Composite phase change materials using lightweight aggregate as supporting material have been used in asphalt pavement. This work aims at investigating the effect of lightweight aggregate gradation on latent heat storage capacity of...
Article
The interface between the asphalt and the aggregate contributes significantly to the thermal performance of asphalt mixture. This paper employs non-equilibrium molecular dynamics simulations utilizing the Langevin method, and reveals the interfacial heat transport of asphalt mixture. Kapitza thermal resistance is applied as the assessment index of...
Article
Full-text available
In this research, an exact dynamic stiffness model for spatial plate built-up structures under comprehensive combinations of different boundary conditions is newly proposed. Dynamic stiffness formulations for plate elements with 16 different types of supported opposite edges and arbitrarily supported boundary conditions along other edges are develo...
Article
Full-text available
This paper establishes the equivalent relationships between the half-sinusoidal load, triangular load, vertical stepwise load, and moving traffic load. The governing equation was established for analyzing the dynamic responses of pavement, and half-sinusoidal load, triangular load, and vertical stepwise load functions were transformed into Fourier...
Article
Full-text available
Vibratory compaction of bridge deck pavement impacts the structural integrity of bridges to certain degrees. In this study, we analyzed the dynamic response of different types of concrete-beam bridges (continuous beam and simply supported beam) with different cross-sectional designs (T-beam and hollow-slab beam) under vibratory compaction of bridge...
Article
Full-text available
Purpose The soil water retention curve (SWRC) and unsaturated hydraulic conductivity (UHC) are crucial indices to assess hydraulic properties of porous media that primarily depend on the particle and pore size distributions. This study aims to present a method based on the discrete element model (DEM) and the typical Arya and Paris model (AP model...
Article
This paper develops an algorithm for generating the three-dimensional (3D) heterogeneous microstructure of asphalt concrete based on random modeling. The asphalt concrete was modeled as heterogeneous material with fine aggregate matrix (FAM), coarse aggregates, and air voids. We generated 3D aggregate shapes with three two-dimensional (2D) projecti...
Article
Full-text available
Soil salinization is a major and long-standing environmental problem worldwide. Leaching through subsurface drainage systems under ponding conditions has been widely adopted to ameliorate saline soils in coastal areas with shallow groundwater tables. Because the seepage rate decreases by orders of magnitude from the near-drain area to midway betwee...
Article
Full-text available
Resilient modulus is an important response index for unbound graded aggregate materials (UGAM) as a drainage layer in pavement structure. In this paper, a large-scale dynamic triaxial test (300 mm in diameter and 600 mm in height) is conducted with four gradations under conditions of repeated loading tests to investigate the resilient responses wit...
Article
A three-dimensional discrete element model of an asphalt mixture is developed based on discrete element method (DEM) software to investigate the cracking mechanism of the asphalt mixture, which is validated by the results of an indirect tensile test. Then, the model is applied to study the displacement field and fracture fragment distribution in te...
Article
Full-text available
In order to quickly remove water entering pavement layers so as to mitigate water-induced damage, drainage layers are widely used in highway pavements. This paper introduces a 1-D mathematical model in order to quantify the transient behaviour of the groundwater flow in the drainage layer of highway pavements. The model takes into account the capil...
Article
Full-text available
Asphalt bridge deck pavement subjected to high- and low-temperature environments is easily damaged (e.g. freezing in the winter and rutting in the summer). To prevent the freezing and rutting of asphaltic pavement, a groundwater circulation temperature control system (GCTCS) was designed for engineering applications. Using 3D simulations via COMSOL...
Article
Full-text available
This paper presents a particle shape characterization and reconstruction method to describe the geometrical information of granular railway ballast. The outline of a real granular particle is segmented and transformed as discrete time domain signals based on Fourier transform method. Then, the discrete Fourier transform algorithm is developed and a...
Article
Full-text available
Rutting is one of the most important distresses for asphalt pavement structures especially due to the heavy traffic loadings. In this paper, the solution of Burgers model is employed and simplified, which makes the residual strain only depend on the applied load. Then, the governing equation for dynamic response of pavement was established and a se...
Article
Full-text available
To evaluate the reinforcement effectiveness of the grouted rock bolts, a dimensionless parameter’s approach (i.e. bolt density β) is adopted. Following the Mohr–Coulomb and generalized Hoek–Brown failure criteria, the concept of the neutral point for the grouted rock bolts is introduced, and the determination of the equivalent plastic zone is divid...
Article
Full-text available
In the present study, a model is developed to calculate the upper bound of the seismic displacement of a slope based on the sliding rigid block model. In this model, it is assumed that the geotechnical materials satisfy the nonlinear Mohr–Coulomb (M–C) failure criterion, and the instantaneous shear strength parameters are introduced by the “externa...
Article
This paper presented solutions of displacement and stress for a circular opening which is reinforced with grouted rock bolt. It satisfies the Mohr-Coulomb (M-C) or generalized Hoek-Brown (H-B) failure criterion, and exhibits elastic-brittle-plastic or strain-softening behavior. The numerical stepwise produce for strain-softening rock mass reinforce...
Article
Full-text available
The present method used to estimate water infiltrating into the pavement of highway is regional and less representative. Based on the flow theory in porous media and Poiseuille cubic law in cracked media, a model was established to quantify the water balance between surface course and the drainage layer in the pavement of highway to estimate the pa...
Article
The unbound graded aggregate base (UGAB) has been widely used in drainage layers of highway pavements. This kind of material is of high permeability and can thus drain efficiently the water infiltrated through cracks in the pavement and reduce the associated water damage. The hydraulic conductivity of UGAB is a key factor describing the water flow...
Article
Full-text available
Considering the influence of group piles, a prediction model for three-dimensional ground surface settlement induced by circular metro tunnels excavation in incompressible rock masses is proposed based on the stochastic medium theory and the shear displacement method. The surface settlement caused by the metro tunnel opening is divided into two par...
Article
Full-text available
The skid resistant performance of slippery pavement is one of the most important pavement surface characteristics, as it is associated with both pavement serviceability and traffic safety. Through simulating different pavement conditions in the freezing laboratory, skid resistance of asphalt pavement under various slippery conditions is measured wi...
Article
Full-text available
Seepage force is simplified as seepage volumetric force in the stress field along the radial direction. Out-of-plane stress and seepage force are incorporated, and the theoretical solutions for stress, displacement, and plastic radius of a circular opening for the elastic-brittle-plastic and elastic-plastic rock mass are proposed based on the Mohr–...
Article
Full-text available
Based on the Boit’s theory, the governing equation was established to account for the response of moisture pavement. The analytical solutions were obtained through the expansion of Fourier series. Further, the effects of parameters (i.e., hydraulic conductivity, traffic load velocity, drainage boundary and solid modulus.) on dynamic response were i...
Article
Full-text available
In order to simplify the boundary conditions of pavement temperature field, the “Environment-Surface” system which considered the natural environment and pavement surface was established. Based on this system, the partial differential equations of the one-dimensional heat conduction in the pavement were established on the basis of the heat transfer...
Article
Currently, there are few quantitative studies on the adhesion of ice to the asphalt pavement surface. In this paper, a large-scale freezing laboratory is employed to simulate the low-temperature and wet environment, and a full-scale asphalt pavement model is constructed in the freezing laboratory. The experimental schemes are developed to measure t...
Article
In order to predict asphalt pavement temperature in the natural environment, the key factors of pavement temperature were determined based on the principle of heat transfer solar radiation. The distribution of pavement temperature was analyzed based on the field test results. Further, the method-experience prediction model of pavement surface was e...
Article
Based on the saturated flow theory, a method was presented for improving the design of drainage layer of pavement. Meanwhile, the mathematical models were established to calculate the water exchange in drainage layer with a constant cross-width thickness and with a varying cross-width thickness respectively. Then, the analytical solutions of flux d...
Article
In order to reveal the mechanism of water-induced damage to asphalt pavement, a three-layer surface course-base course-subgrade physical model is established based on the Biot's dynamic consolidation theory, and the governing equations of the three layers are deduced for the saturated asphalt pavement under moving traffic loads. Then, by utilizing...
Article
In order to investigate the permeability of SMA (Stone mastic asphaltum) pavement, an improved and a self-made method for testing the permeability coefficient of SMA pavement was adopted in Hunan Province. According to the testing results and incorporating the evaluation method of SMA pavement, the permeability coefficient of SMA pavement was evalu...
Article
In order to improve properties of asphalts and asphalt mixtures, the selection and addition of nanometer materials, which were to modify the base asphalt was done, and the preparation of nanomaterials modified asphalt was conducted. A series of asphalt experiments were performed to analyze the basic performance, such as penetration, ductility, soft...
Article
Full-text available
Biological enzyme used for catalyzing reaction of soil is a new material which is completely different from traditional highway material. The solidification mechanism, construction technique and maintenance technique of TerraZyme solidifying the base course of pavement have been discussed and with respect to which the field tests have been studied...