Evaluation of Rutting Performance of Asphalt Mixture with Driving Wheel Pavement Analyzer

Rutting is common pavement distress, which leads to lower riding comfort for road users and high maintenance costs. One of the commonly used tests is the simulation test with wheel tracking devices. Here, a new rutting test system has been developed based on the “Driving Wheel Pavement Analyzer” (DWPA) to evaluate the rutting performance of asphalt mixtures. This study conducted three types of rutting tests to validate feasibility, reliability, and accuracy of DWPA test. The results indicated that the DWPA test provided more information on ruts and enabled us to distinguish the performance of materials. The CDWPA index is better suited to reflect the rutting resistance of the material, which is highly correlated to the APA rutting index and the rutting test index of China according to the grey relational analysis results.

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Ground Flutter Simulation Test Based on Reduced Order Modeling of Aerodynamics by CFD/CSD Coupling Method

International Journal of Applied Mechanics ◽

10.1142/s175882511950008x ◽

2019 ◽

Vol 11 (01) ◽

pp. 1950008

Author(s):

Binwen Wang ◽

Xueling Fan

Keyword(s):

Aerodynamic Force ◽

Test System ◽

Simulation Test ◽

Robust Controller ◽

Test Technique ◽

Reduced Order ◽

Aerodynamic Model ◽

Flutter Boundary ◽

Computational Fluid Dynamics Cfd ◽

Good Agreement

Flutter is an aeroelastic phenomenon that may cause severe damage to aircraft. Traditional flutter evaluation methods have many disadvantages (e.g., complex, costly and time-consuming) which could be overcome by ground flutter test technique. In this study, an unsteady aerodynamic model is obtained using computational fluid dynamics (CFD) code according to the procedure of frequency domain aerodynamic calculation. Then, the genetic algorithm (GA) method is adopted to optimize interpolation points for both excitation and response. Furthermore, the minimum-state method is utilized for rational fitting so as to establish an aerodynamic model in time domain. The aerodynamic force is simulated through exciters and the precision of simulation is guaranteed by multi-input and multi-output robust controller. Finally, ground flutter simulation test system is employed to acquire the flutter boundary through response under a range of air speeds. A good agreement is observed for both velocity and frequency of flutter between the test and modeling results.

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The Reliability Analysis of Relative Deformation of Wheel Tracking Test of Asphalt Mixture

ICCTP 2011 ◽

10.1061/41186(421)351 ◽

2011 ◽

Author(s):

Xingye Zhou ◽

Xudong Wang ◽

Qin Xiong ◽

Xiaotao Liu

Keyword(s):

Reliability Analysis ◽

Asphalt Mixture ◽

Relative Deformation ◽

Wheel Tracking Test ◽

Wheel Tracking

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Performance of Asphalt Mixture Used for Asphalt Treated Base of Perpetual Pavements

Advanced Materials Research ◽

10.4028/www.scientific.net/amr.415-417.1531 ◽

2011 ◽

Vol 415-417 ◽

pp. 1531-1536

Author(s):

Fu Ming Liu ◽

Duan Yi Wang

Keyword(s):

Tensile Strain ◽

Performance Test ◽

Asphalt Mixture ◽

Fatigue Tests ◽

Asphalt Pavements ◽

Moisture Susceptibility ◽

Scale Test ◽

And Performance ◽

Wheel Tracking ◽

Fatigue Endurance

This paper presents the results of laboratory and performance tests for an asphalt treated base (ATB) and mixes developed in this study for perpetual asphalt pavements. Laboratory tests for the mixes included moisture susceptibility, wheel tracking and fatigue tests. The results of performance test indicated that the resistances of the high content binder ATB against moisture and fatigue damage were better than those of the lower one. It was also found from the full scale test sections that the tensile strain values at the bottom of the asphalt layer for the ATB sections were low when the asphalt layer thicknesses of the ATB sections were not thicker than those of the conventional sections. All the tensile strain values measured from the ATB sections were within the fatigue endurance limit of 70 microstrain which is the fatigue criterion of a perpetual asphalt pavement.

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Design of Integrated Simulation Test System for Ship Platform

10.1145/3469213.3470411 ◽

2021 ◽

Author(s):

Yong Xu ◽

Wenjian Yao ◽

Yuan Qu ◽

Chao Ma

Keyword(s):

Test System ◽

Simulation Test ◽

Integrated Simulation

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Research on the Affective Factors of the High-Temperature Behavior of the Colored Asphalt Mixture Based on the Grey Relational

Applied Mechanics and Materials ◽

10.4028/www.scientific.net/amm.174-177.127 ◽

2012 ◽

Vol 174-177 ◽

pp. 127-130 ◽

Cited By ~ 3

Author(s):

Hong Wei Feng ◽

Chun Han

Keyword(s):

High Temperature ◽

Asphalt Mixture ◽

Temperature Behavior ◽

Grey Relation Analysis ◽

Affective Factors ◽

High Temperature Behavior ◽

Research Findings ◽

Grey Relational ◽

Negative Factors ◽

Grey Relation

The negative factors of the colored asphalt mixture extremely correlate to its high-temperature behavior. With the Grey Relation Analysis, this paper makes a thorough analysis of the affective factors on the high-temperature behavior of the colored asphalt mixture, the result of which shows that the affective factors can be classified as the softening point of colored asphalt and the aggregate ratio of mixture. The research findings will provide a beneficial reference for the design of colored asphalt mixture.

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The Research of Safe Computer Simulation Test System

Proceedings of the 2015 International Conference on Education, Management, Information and Medicine ◽

10.2991/emim-15.2015.271 ◽

2015 ◽

Author(s):

Zhang Yan ◽

Chen Wei

Keyword(s):

Computer Simulation ◽

Test System ◽

Simulation Test

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Utilización de técnicas petrográficas para evaluar los efectos inducidos del NaCl, condiciones climáticas extremas y el paso del tráfico en las superficies de las carreteras españolas

Materiales de Construcción ◽

10.3989/mc.2017.07516 ◽

2017 ◽

Vol 67 (328) ◽

pp. 138 ◽

Cited By ~ 1

Author(s):

A. P. Pérez-Fortes ◽

M. J. Varas-Muriel ◽

P. Castiñeiras

Keyword(s):

El Paso ◽

Asphalt Mixture ◽

Polarized Light ◽

Nacl Solution ◽

Winter Maintenance ◽

Traffic Conditions ◽

Wheel Tracking Test ◽

Wheel Tracking ◽

Design Construction

The asphalt surface layer is the most exposed to weather and traffic conditions on roads, especially those subjected to winter maintenance. Therefore, a deep knowledge of the mechanisms which can damage this layer is necessary to improve its design, construction and long-term use. With this purpose, two types of asphalt mixtures used on roads from NW Spain were subjected to durability tests (freezing-thaw and thermal-stress) with a saturated NaCl solution. After the durability tests, a wheel tracking test was performed on the samples, and the resultant material was analyzed by optical polarized light and fluorescence microscopy. This analysis showed that the binder-aggregate low adhesion was the main responsible of the asphalt mixture damage. This damage was concentrated in the aggregates because the binder acted as an impermeable wall. Consequently, the NaCl solution penetrated and degraded the aggregates quickly and strongly.

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Effectiveness of Loaded Wheel Tracking Test to Ascertain Moisture Susceptibility of Asphalt Mixtures

Transportation Research Record Journal of the Transportation Research Board ◽

10.1177/03611981211036355 ◽

2021 ◽

pp. 036119812110363

Author(s):

Moses Akentuna ◽

Louay N. Mohammad ◽

Sanchit Sachdeva ◽

Samuel B. Cooper ◽

Samuel B. Cooper

Keyword(s):

Asphalt Binder ◽

Asphalt Mixture ◽

Moisture Damage ◽

Asphalt Mixtures ◽

Asphalt Binders ◽

Creep Recovery ◽

Moisture Susceptibility ◽

Freeze Thaw ◽

Wheel Tracking ◽

Mixture Samples

Moisture damage of asphalt mixtures is a major distress affecting the durability of asphalt pavements. The loaded wheel tracking (LWT) test is gaining popularity in determining moisture damage because of its ability to relate laboratory performance to field performance. However, the accuracy of LWT’s “pass/fail” criteria for screening mixtures is limited. The objective of this study was to evaluate the capability of the LWT test to identify moisture susceptibility of asphalt mixtures with different moisture conditioning protocols. Seven 12.5 mm asphalt mixtures with two asphalt binder types (unmodified PG 67-22 and modified PG 70-22), and three aggregate types (limestone, crushed gravel, and a semi-crushed gravel) were utilized. Asphalt binder and mixture samples were subjected to five conditioning levels, namely, a control; single freeze–thaw-; triple freeze–thaw-; MiST 3500 cycles; and MiST 7000 cycles. Frequency sweep at multiple temperatures and frequencies, and multiple stress creep recovery tests were performed to evaluate asphalt binders. LWT test was used to evaluate the asphalt mixture samples. Freeze–thaw and MiST conditioning resulted in an increase in stiffness in the asphalt binders as compared with the control. Further, freeze–thaw and MiST conditioning resulted in an increase in rut depth compared with the control asphalt mixture. The conditioning protocols evaluated were effective in exposing moisture-sensitive mixtures, which initially showed compliance with Louisiana asphalt mixture design specifications.

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