Experimental Study and Calculation of a Three-Dimensional Finite Element Model of Infiltration in Drainage Asphalt Pavement

Zhang, Qingsong; Ji, Tianjian; Wang, Zhanqi; Xiao, Lei

doi:10.3390/ma13183909

Cited by 10 publications

(8 citation statements)

References 30 publications

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“…The current domestic technical specifications specify the temperatures corresponding to bitumen viscosity of 0.17 ± 0.02 Pa-s and 0.28 ± 0.03 Pa-s as the optimum mixing temperature and optimum compaction temperature of bitumen mixes, respectively [8]. Different RPRA high-viscosity bitumens were prepared by controlling the dosing of WTR at 2%, 3%, 4% and 5%, respectively.…”

Section: Study Of Wpe On Rpra's Viscosity-temperature Characteristicsmentioning

confidence: 99%

Preparation and rheological properties of warm mix compound high viscosity modified bitumen

wu¹,

Yang²,

lei³

et al. 2022

International Conference on Frontiers of Traffic and Transportation Engineering (FTTE 2022)

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The effects of different types and amounts of high viscosity modifiers on bitumen properties are investigated by conventional bitumen property tests and DSR and BBR rheological property tests. And the optimal content of modifier and the viscosity control mechanism of different kinds of modifiers are determined. On this basis, WTR compound highviscosity modified bitumen (RPRA for short) was prepared. The results showed that the rheological properties of RPRA high-viscosity bitumen were optimal when the compound modified bitumen was prepared with 20% waste rubber powder, 5% recycled plastic and 3% polyethylene wax.

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Section: Study Of Wpe On Rpra's Viscosity-temperature Characteristicsmentioning

confidence: 99%

Preparation and rheological properties of warm mix compound high viscosity modified bitumen

wu¹,

Yang²,

lei³

et al. 2022

International Conference on Frontiers of Traffic and Transportation Engineering (FTTE 2022)

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“…However, the increase in pavement length and rainfall intensity decreased the time required for the water to flow over the pavement surface. In another study, three-dimensional (3D) FE software (i.e., COMSOL Multiphasic) was employed to investigate the impact of the longitudinal slope on OGFC drainage capacity ( 11 ). To achieve this objective, a pavement with a width of 32 ft (10 m) and a length of 262 ft (80 m) was simulated using COMSOL.…”

Section: Introductionmentioning

confidence: 99%

“…It has been concluded that the OGFC drainage capacity is strongly dependent on its porosity ( 8 , 9 ). In addition, pavement geometric design, including longitudinal and transverse slopes and pavement length, has been identified as a significant factor that affects OGFC hydraulic characteristics ( 10 , 11 ). Yet, previous studies have focused on the impacts of the OGFC layer itself and ignored the impacts of the underlying layers’ permeabilities on the drainage properties.…”

mentioning

confidence: 99%

Investigating the Seepage Characteristics of an Open-Graded Friction Course Using Finite Element Modeling

Abohamer

Elseifi

Mayeux

et al. 2023

Transportation Research Record: Journal of the Transportation R

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An open-graded friction course (OGFC) is an asphalt mixture designed with a large air void (AV) content that provides enhanced drainage capability at the surface. The main objectives of this study were to investigate the impacts of selected factors (i.e., the OGFC thickness and coefficient of permeability, the permeability of the underlying layer, and traffic loading) on the drainage characteristics of the OGFC, develop a quantitative tool to simulate the deterioration in the functional performance of the OGFC, and propose new guidelines for the AV content of OGFC for optimum functionality. To this end, a three-dimensional finite element (FE) model was developed to evaluate the impacts of OGFC permeability, OGFC layer thickness, underlying layer permeability, rain intensity, and traffic volume on the seepage characteristics of OGFC pavements. The impacts of these factors were evaluated by calculating the time at which the OGFC surface reaches overflow condition ( TC). Statistical analysis of the results showed that all considered factors had a significant impact on OGFC seepage characteristics, except OGFC permeability. In addition, an artificial neural network (ANN) model was developed to predict TC without the need for FE modeling. Results indicated that the ANN model predicted TC accurately with R2 values of 0.99 and 0.98 in the training and validation stages, respectively. The results also indicated that the model accurately predicted TC over time for OGFC pavements with a root-mean-square error of less than 5.0%. Simulation runs were conducted using the developed FE model under different OGFC AV content conditions and rain intensities. Results revealed that an OGFC layer with an AV content of 16% would provide adequate drainage performance while minimizing OGFC durability issues.

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“…Previously, researchers primarily used the homogeneous material concept to analyze the seepage features of asphalt mixtures [10,11]. However, the mesoscopic void structure of an asphalt mixture is complex, the void scale is extensive, and the spatial distribution is diverse.…”

Section: Introductionmentioning

confidence: 99%

Characteristics of Internal Water Flow Conduction within Asphalt Mixtures Based on Real Three-Dimensional Void Structure

Wan

Zhang

2023

Buildings

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This work presents a new approach to investigating water conduction properties in real three-dimensional (3D) voids of asphalt mixtures. Three different molding methods were employed for the same grade of asphalt mixture, and the three asphalt mixture specimens were scanned using X-ray Computerized Tomography (CT) to identify the real 3D void structure distribution inside the mixture. The real 3D behavior of void moisture conduction inside the mixture was simulated using the discrete lattice Boltzmann method and the BGK collision model. Three different molding methods were used to study the behavior of mesoscopic seepage inside the specimen. The results show that water conduction varies substantially in real 3D voids inside diverse molded objects. Regardless of flow and flow velocity, the Superpave Gyratory Compactor (SGC) method is extraordinarily close to the conduction qualities of the actual field core material. It shows that the Marshall molding method is inconsistent with the actual pavement molding method, and the SGC method can not only ensure that the reasonable void ratio is conducive to the thermal expansion and cold shrinkage space of the asphalt mixture but also prevents rainwater from entering the asphalt mixture. This work provides a new perspective for the study of water damage resistance and medium transmission characteristics of asphalt mixtures.

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Experimental Study and Calculation of a Three-Dimensional Finite Element Model of Infiltration in Drainage Asphalt Pavement

Cited by 10 publications

References 30 publications

Preparation and rheological properties of warm mix compound high viscosity modified bitumen

Preparation and rheological properties of warm mix compound high viscosity modified bitumen

Investigating the Seepage Characteristics of an Open-Graded Friction Course Using Finite Element Modeling

Characteristics of Internal Water Flow Conduction within Asphalt Mixtures Based on Real Three-Dimensional Void Structure

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