Asphalt Pavement Mechanical Response of Accelerated Pavement Testing in Single‐Axle and Dual‐Axle Loading Modes

Guan, Zhiguang; Zhuang, Chuanyi; Zhang, Peng

doi:10.1155/2019/3129485

Cited by 6 publications

(2 citation statements)

References 18 publications

(13 reference statements)

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“…the driving axle of a lorry with the proportion of the vehicle mass attributable to such axle being 11.5 tonnes. When comparing single-axle and dual-axle loading modes, it was found [11], that the horizontal tensile strain peak, the horizontal compressive strain peak, and the stress peak in ACM layers are all higher in the single-axle loading mode due to smaller contact area. However, the degree of pavement damage is larger in the dual-axle loading mode once the maximum accumulated tensile strain peak is reached, Fig.…”

Section: Accelerated Pavement Testingmentioning

confidence: 99%

Non-Destructive Evaluation of Asphalt Concrete Materials Performance During their Life Cycle Based on Accelerated Pavement Testing

Ďurinová

Kozel

2021

Civil and Environmental Engineering

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The characteristics of asphalt concrete materials (ACM) composing the surfacing layer of a bituminous pavement must fulfil a requirement to maintain a level of operational capability demanded by national standards of a given country. ACM’s are a subject to significant stress caused by traffic load and climate conditions, this leads to changes in their physico-mechanical properties. The loss of physico-mechanical properties causes deterioration of road surface characteristics. Since these changes occur throughout the ACM’s life cycle, it is necessary to know the deterioration curves related to loading and time in mathematical terms, i.e. functions describing the initiation and progression of pavement’s defect in time. Pavement Performance Models (PPM) ascertained by non-destructive testing are used to objectively express the surface properties of pavements and their deterioration. The methodology consists of an analytical method to ascertain physico-mechanical characteristics of ACM’s and the use of experimental accelerated pavement testing (APT) facilities.

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Section: Accelerated Pavement Testingmentioning

confidence: 99%

Non-Destructive Evaluation of Asphalt Concrete Materials Performance During their Life Cycle Based on Accelerated Pavement Testing

Ďurinová

Kozel

2021

Civil and Environmental Engineering

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“…However, the thickness of asphalt pavement used is too thin to completely reproduce the mechanical characteristics of common pavement structures. Guan et al [18] studied the dynamic response characteristics of indoor full-scale asphalt concrete pavement in single-axle and dual-axle loading modes, and asphalt layer thickness did not change. The above research was mainly aimed at semirigid asphalt pavement or flexible base asphalt pavement.…”

Section: Introductionmentioning

confidence: 99%

Influence of Axle Load and Asphalt Layer Thickness on Dynamic Response of Asphalt Pavement

Cao¹,

Huang²,

Wu³

2022

Geofluids

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Based on the test data of vehicle load test on asphalt pavement, the significance of dynamic response index of different asphalt pavement to axle load change of single and double rear axle trucks is analyzed. The changes of horizontal strain at the bottom of asphalt layer, vertical compressive stress at the top of subgrade, and vertical displacement of transition layer and bottom compressive stress before and after laying of middle and upper layers are revealed. The test results show that reducing the thickness of asphalt layer or increasing the vehicle axle load can lead to the more unfavorable stress-strain distribution in asphalt pavement under driving load. The influence of the fluctuation of truck axle load or asphalt layer thickness on the stress-strain distribution in asphalt pavement varies with the type of pavement structure, pavement response index, vehicle driving speed, vehicle type, and the horizon of the measuring point. The transverse strain at the bottom of the asphalt layer is more affected by the axle load and the thickness of the asphalt layer than the longitudinal strain at the bottom of the asphalt layer. The measured value of the dynamic response index of the semirigid asphalt pavement is more affected by the axle load than that of the inverted asphalt pavement. However, the measured value of the dynamic response index of the semi-rigid asphalt pavement is less affected by the thickness of the asphalt layer when the thickness of the asphalt layer changes within a certain range. The tensile strain part of the longitudinal strain at the bottom of the asphalt layer and the compressive strain part of the transverse strain at the bottom of the asphalt layer are greatly affected by the thickness of the asphalt layer. The sensitivity of fatigue life of asphalt pavement of inverted structure to driving speed and axle load is less than that of semirigid structure. The research results can provide reference for the analysis of the asphalt pavement disease mechanism and provide guidance for asphalt pavement structural design and service life analysis.

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Field measurement of strain response for typical asphalt pavement

Pan

Zheng

Qian

et al. 2021

J. Cent. South Univ.

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In order to reveal the changing law of the mechanical response of asphalt pavements under the action of vehicle load and provide references for the design of durable pavements, three typical asphalt pavement structures with flexible base (S1), combined base (S2), and semi-rigid base (S3) were selected to perform field strain tests under static and dynamic load using the fiber Bragg grating optical sensing technology. The changing characteristics of the strain field along the horizontal and depth directions of pavements were analyzed. The results indicate that the most unfavorable asphalt pavement layers were the upper-middle surface layer and the lower base layer. In addition, the most unfavorable loading positions on the surface layer and the base layer were the center of wheel load and the gap center between two wheels, respectively. The most unfavorable layer of the surface layers gradually moved from the lower layer to the upper layer with the increase of base layer modulus. The power function relationships between structural layer strain and vehicle speed were revealed. The semi-rigid base asphalt pavement was the most durable pavement type, since its strain value was the lowest compared to those of the other structures.

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Asphalt Pavement Mechanical Response of Accelerated Pavement Testing in Single‐Axle and Dual‐Axle Loading Modes

Cited by 6 publications

References 18 publications

Non-Destructive Evaluation of Asphalt Concrete Materials Performance During their Life Cycle Based on Accelerated Pavement Testing

Non-Destructive Evaluation of Asphalt Concrete Materials Performance During their Life Cycle Based on Accelerated Pavement Testing

Influence of Axle Load and Asphalt Layer Thickness on Dynamic Response of Asphalt Pavement

Field measurement of strain response for typical asphalt pavement

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