Permeability of asphalt mixtures exposed to freeze–thaw cycles

Xu, Huining; Guo, Wei; Tan, Yiqiu

doi:10.1016/j.coldregions.2015.12.001

Cited by 83 publications

(36 citation statements)

References 18 publications

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“…This law assumes that the specimen was saturated, it was homogeneous and the flow was laminar. Several authors question the Darcy's law applicability stating that the flow in porous asphalt is turbulent [50][51][52]. In this study it was used the permeameter based on Darcy's law due to its simplicity and to the lack of equipment that takes into account the turbulent flow in the specimens.…”

Section: Permeability Testmentioning

confidence: 99%

Study of the porous asphalt performance with cellulosic fibres

Afonso

Dinis-Almeida

Fael

2017

Construction and Building Materials

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Section: Permeability Testmentioning

confidence: 99%

Study of the porous asphalt performance with cellulosic fibres

Afonso

Dinis-Almeida

Fael

2017

Construction and Building Materials

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“…CFT increases the sizes of the existing pores and causes the occurrence of the new ones in an asphalt concrete. With increase of the cycle number of FT the hydraulic conductivity is essentially increased and with big values of hydraulic gradient the regime of water flow in the asphalt concrete does not follow the Darcy's law, i.e., it is not a laminar regime, but a turbulent one [12].…”

Section: Introductionmentioning

confidence: 97%

“…The results of laboratory experimental investigations for three types of asphalt concrete (a stone mastic asphalt mixture, a conventional dense graded asphalt mixture and an open graded asphalt mixture) have shown that CFT impacts greatly on permeability of asphalt concretes [12]. CFT increases the sizes of the existing pores and causes the occurrence of the new ones in an asphalt concrete.…”

Section: Introductionmentioning

confidence: 99%

Effect of Freeze-Thaw Cycles on Mechanical Characteristics of Bitumens and Stone Mastic Asphalts

Teltayev¹,

Rossi

Izmailova³

et al. 2019

Applied Sciences

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The present article investigates in laboratory conditions the effect of cyclic freezing and thawing (CFT) on characteristics of the neat bitumen and bitumens modified with different polymers, as well as stone mastic asphalt concretes prepared with the use of the neat and the modified bitumens. Maximal and minimal temperature in cycles of freezing and thawing (FT) is accepted equal to +20 • C and −18 ± 2 • C respectively. Characteristics of low temperature resistance of bitumens (stiffness S and m-value) have been determined on bending beam rheometer at the temperatures of −24 • C, −30 • C, and −36 • C. Strength at direct tension of the stone mastic asphalt concretes has been evaluated in the device TRAVIS (Infratest Ltd., Brackenheim, Germany) at the temperatures of 0 • C, −10 • C, −20 • C, and −30 • C. Resistance of stone mastic asphalt concretes to rutting has been determined on a Hamburg wheel tracking machine. The characteristics of the bitumens have been determined in the initial condition and after 25 and 50 cycles of FT, and the characteristics of stone mastic asphalt concretes, in the initial condition and after 50 cycles of FT. The results obtained experimentally have shown that CFT impacts essentially on the investigated characteristics of bitumens and stone mastic asphalt concretes. Modification with polymers improves the mechanical characteristics of the bitumens and decreases the effect of CFT. It is also found out that when selecting a bitumen for specific climatic conditions it is necessary to take into account both the number of cycles of FT and the characteristic low temperature.

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“…Moreover, Xu et al [15] investigated the effects of freeze-thaw cycles on the thermodynamic characteristics of asphalt mixtures, based on the information entropy theory, CT, and digital image processing (DIP) technologies. Moreover, the influence of freeze-thaw cycles on permeability of asphalt mixtures were also evaluated by the means of flow state, as well as water conductivity, of asphalt mixtures [16]. Yan et al [17] investigated stone matrix asphalt (SMA) mixtures under the effect of freeze-thaw cycles and evaluated the freeze-thaw resistance based on Marshall design indicators and water stability.…”

Section: Introductionmentioning

confidence: 99%

Further Investigation on Damage Model of Eco-Friendly Basalt Fiber Modified Asphalt Mixture under Freeze-Thaw Cycles

Wang

Cheng

et al. 2018

Applied Sciences

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The main distresses of asphalt pavements in seasonally frozen regions are due to the effects of water action, freeze-thaw cycles, and so on. Basalt fiber, as an eco-friendly mineral fiber with high mechanical performance, has been adopted to reinforce asphalt mixture in order to improve its mechanical properties. This study investigated the freeze-thaw damage characteristics of asphalt mixtures reinforced with eco-friendly basalt fiber by volume and mechanical properties—air voids, splitting tensile strength, and indirect tensile stiffness modulus tests. Test results indicated that asphalt mixtures reinforced with eco-friendly basalt fiber had better mechanical properties (i.e., splitting tensile strength and indirect tensile stiffness modulus) before and after freeze-thaw cycles. Furthermore, this study developed logistic damage models of asphalt mixtures in terms of the damage characteristics, and found that adding basalt fiber could significantly reduce the damage degree by about 25%, and slow down the damage grow rate by about 45% compared with control group without basalt fiber. Moreover, multi-variable grey models (GM) (1,N) were established for modelling the damage characteristics of asphalt mixtures under the effect of freeze-thaw cycles. GM (1,3) was proven as an effective prediction model to perform better in prediction accuracy compared to GM (1,2).

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Permeability of asphalt mixtures exposed to freeze–thaw cycles

Cited by 83 publications

References 18 publications

Study of the porous asphalt performance with cellulosic fibres

Study of the porous asphalt performance with cellulosic fibres

Effect of Freeze-Thaw Cycles on Mechanical Characteristics of Bitumens and Stone Mastic Asphalts

Further Investigation on Damage Model of Eco-Friendly Basalt Fiber Modified Asphalt Mixture under Freeze-Thaw Cycles

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