Damage and corrosion of conductive asphalt concrete subjected to freeze–thaw cycles and salt

Sun, Chang; Huang, Shao Xu; Wu, Shao Peng

doi:10.1179/1432891713z.000000000223

Cited by 21 publications

(10 citation statements)

References 13 publications

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“…The results indicate that freeze-thaw cycles and salts have significant effect on the performance of conductive asphalt concretes. 8 According to the literature review, energy potential of an asphalt collector still requires further validation in China. As a result, this paper is mainly aimed at accessing the effect of thermal properties of asphalt materials on the solar energy potential of an asphalt collector.…”

Section: Introductionmentioning

confidence: 99%

Simulation study of heat energy potential of asphalt solar collectors

Pan

et al. 2014

Materials Research Innovations

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Using black asphalt pavements as solar collectors is an emerging technology for snow-melting of pavements in winter or cooling and heating of adjacent buildings. The primarily concerned issues of this technology are the heat energy potential and its critical parameters. In this paper, a transient, two-dimensional finite element model is developed to investigate the heat transfer process in both neat and conductive asphalt pavements. The results from thermal properties tests show that thermal conductivity of asphalt mixtures may increase by more than 30% due to the addition of conductive fillers. Besides, the modelling results indicate that the higher thermal conductivity may result in acceleration of the heat conduction and increase in temperature at deeper depths in asphalt pavements. According to the calculated results of heat energy potential based upon the model, the energy derived from a neat asphalt collector or a conductive one is considerable. Thermal properties of asphalt materials have no significant impact on energy absorption in asphalt pavements.

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Section: Introductionmentioning

confidence: 99%

Simulation study of heat energy potential of asphalt solar collectors

Pan

et al. 2014

Materials Research Innovations

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“…Another cause of asphalt failure in cold regions is thermal cracking (at low temperatures), which may significantly reduce the durability of pavements [ 5 , 6 ]. This damage is especially severe when water is present in the asphalt pores due to its comparatively high thermal expansion.…”

Section: Introductionmentioning

confidence: 99%

“…There are many studies, both theoretical and experimental, on asphalt degradation (e.g., [ 3 , 4 , 13 , 14 , 15 , 16 ]), but only a few experimental works dedicated to low temperatures and freeze-thawcycles [ 5 , 6 , 7 , 17 , 18 , 19 ]. Furthermore, the experimental tests cannot show the evolution of the damage inside the asphalt’s microstructure, which is critical for understanding the deterioration mechanisms.…”

Section: Introductionmentioning

confidence: 99%

Combined Peridynamics and Discrete Multiphysics to Study the Effects of Air Voids and Freeze-Thaw on the Mechanical Properties of Asphalt

et al. 2021

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This paper demonstrates the use of peridynamics and discrete multiphysics to assess micro crack formation and propagation in asphalt at low temperatures and under freezing conditions. Three scenarios are investigated: (a) asphalt without air voids under compressive load, (b) asphalt with air voids and (c) voids filled with freezing water. The first two are computed with Peridynamics, the third with peridynamics combined with discrete multiphysics. The results show that the presence of voids changes the way cracks propagate in the material. In asphalt without voids, cracks tend to propagate at the interface between the mastic and the aggregate. In the presence of voids, they ‘jump’ from one void to the closest void. Water expansion is modelled by coupling Peridynamics with repulsive forces in the context of Discrete Multiphysics. Freezing water expands against the voids’ internal surface, building tension in the material. A network of cracks forms in the asphalt, weakening its mechanical properties. The proposed methodology provides a computational tool for generating samples of ‘digital asphalt’ that can be tested to assess the asphalt properties under different operating conditions.

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“…Salt is detrimental for concrete [3]. Use of salt and other deicers on asphalt degrades the mechanical properties [4][5][6][7][8]. The salt and other deicers corrode the vehicles, pollute the soil and underground water sources.…”

Section: Introductionmentioning

confidence: 99%

The Investigation Thermal Efficiency of High Performance Fiber Reinforced composites with additive Multi-Wall Carbon Nanotubes

2020

AMSE

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Every year thousands of traffic accidents occur due to icing of roads which challenge lives and property. In this study the suitability of steel fibers and multi wall carbon nano tube (MWCNT) for electrical (Joule) heating was determined by cluster heating test which is novel for the literature. In this study, the bearing elements of the buildings and roads are intended to be a heater. Experiments were tested for a total of four weeks, once every week. During the tests, the top surface temperature, the voltage supplied and the current were recorded. The temperature increase and temperature increase rate were determined. Mortar having MWCNT ratio showed a superior heating performance for 4 weeks. In this study, the bearing elements of the buildings and roads are intended to be a heater. The thermal efficiency of the high performance fiber reinforced composites were investigated.

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Damage and corrosion of conductive asphalt concrete subjected to freeze–thaw cycles and salt

Cited by 21 publications

References 13 publications

Simulation study of heat energy potential of asphalt solar collectors

Simulation study of heat energy potential of asphalt solar collectors

Combined Peridynamics and Discrete Multiphysics to Study the Effects of Air Voids and Freeze-Thaw on the Mechanical Properties of Asphalt

The Investigation Thermal Efficiency of High Performance Fiber Reinforced composites with additive Multi-Wall Carbon Nanotubes

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