3D reconstruction of moisture damage resulted volumetric changes in porous asphalt mixture

Cui, Peide; Wu, Shaopeng; Xiao, Yue; Niu, Yunya; Yuan, Gaoming; Lin, Juntao

doi:10.1016/j.conbuildmat.2019.08.039

Cited by 34 publications

(7 citation statements)

References 41 publications

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“…Although these methods are simple to operate, the water-soaked or freeze-thaw conditions cannot well simulate the field site water damage conditions, especially the dynamic water pressure caused by the vehicle load. In practice, water damage of asphalt pavement is a gradually increasing process; the repeated action of the vehicle load will generate circulating dynamic water pressure inside the voids, and asphalt mixture in this process will be continuously scoured, resulting in the gradual accumulation of damage and then developing into water damage [ 16 , 17 ]. Therefore, it is necessary to consider the effect of dynamic water pressure when evaluating the water damage resistance of asphalt mixture.…”

Section: Introductionmentioning

confidence: 99%

Water Stability of Fibers-Enhanced Asphalt Mixtures under Static and Dynamic Damage Conditions

Xiao,

Wang,

Chen

et al. 2024

Materials

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Water damage is one of the major distresses of asphalt pavements. Existing methods for investigating the water stability of asphalt mixtures rely primarily on static water test methods, the tensile strength ratio (TSR) test, and the retained Marshall stability (RMS) test, which evaluate the strength and stability loss after freeze-thaw damage or hot water immersion, respectively. However, these methods do not accurately replicate the actual dynamic water damage conditions to pavement. Therefore, in this study, a variety of damage conditions, including static water conditions and dynamic water pressure conditions, were used to investigate the effects of lignin fibers (LFs), polyester fibers (PFs), and polypropylene fibers (PPFs) on the water stability of asphalt mixtures. First, three fibers-enhanced SMA gap-gradation asphalt mixtures were designed. Then, TSR and RMS were measured under traditional static water damage conditions and new dynamic water pressure damage conditions to evaluate the effect of fiber types on the water stability of asphalt mixtures. Finally, the void rate of asphalt mixtures and its changes under dynamic water damage conditions were further revealed with the help of CT scanning technique. Results showed that, among these three types of fibers, PFs-enhanced asphalt mixture exhibited excellent stability under both static and dynamic water conditions, and the CT scanning test also indicated that the PFs can significantly reduce the increase rate of voids in asphalt mixtures after dynamic water pressure damage. This study identified the potential of incorporating suitable type of fiber to enhance the performance of asphalt mixture under dynamic water pressure damage.

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Section: Introductionmentioning

confidence: 99%

Water Stability of Fibers-Enhanced Asphalt Mixtures under Static and Dynamic Damage Conditions

Xiao,

Wang,

Chen

et al. 2024

Materials

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“…Furthermore, to better simulate the field moisture condition, the immersion wheel tracking test and Hamburg wheel tracking test were designed to test the asphalt mixtures in a water condition [ 6 , 21 ]. To simulate the pumping action, a Moisture-Induced Sensitivity Tester (MIST) was designed to keep samples in a constant temperature and pressure [ 14 , 22 ]. Among them, the ITT is the most widely used test for evaluating the moisture sensitivity of PA mixtures [ 16 , 23 ].…”

Section: Introductionmentioning

confidence: 99%

Experimental Investigation of Moisture Sensitivity and Damage Evolution of Porous Asphalt Mixtures

Wang

Zheng

et al. 2021

Materials

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Porous asphalt (PA) mixtures are designed with a high air void (AV) (i.e., 18~22%) content allowing rainwater to infiltrate into their internal structures. Therefore, PA mixtures are more sensitive to moisture damage than traditional densely graded asphalt mixtures. However, the moisture damage evolution of PA mixtures is still unclear. The objective of this study was to investigate the moisture damage evolution and durability damage evolution of PA mixtures. The indirect tensile test (ITT), ITT fatigue test, and Cantabro loss test were used to evaluate the moisture sensitivity and durability of PA mixtures, and a staged ITT fatigue test was developed to investigate the damage evolutions under dry and wet conditions. Indirect tensile strength (ITS), fatigue life, indirect tensile resilience modulus (E), and durability decreased with the increment of moisture damage and loading cycles. The fatigue life is more sensitive to the moisture damage. The largest decrements in ITS and E were found in the first 3000 loading cycles, and PA mixtures tended to fail when the decrement exceeded 60%. Damage factors based on the ITS and E are proposed to predict the loading history of PA mixtures. The durability damage evolution and damage factors could fit an exponential model under dry conditions. Moisture had a significant influence and an acceleration function on the moisture damage evolution and durability damage evolution of PA mixtures.

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“…Meanwhile, steel slag is rich in metallic oxides such as MgO, CaO, Fe 3 O 4 [20], thus it has been regarded as a kind of magnetic material. Many researchers have made great efforts to incorporate steel slag (as a microwave absorbing material) into conventional asphalt pavement for the purpose of self-healing [14,15,21,22]. As a result of magnetic components like iron and iron oxide present in steel slags, the values of electromagnetic parameters of steel slags are higher than those of traditional aggregates [23], making the steel slag a potential magnetic loss microwave absorber.…”

Section: Introductionmentioning

confidence: 99%

Microwave Absorption Ability of Steel Slag and Road Performance of Asphalt Mixtures Incorporating Steel Slag

et al. 2020

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Excessive usage of non-renewable natural resources and massive construction wastes put pressure on the environment. Steel slags, the main waste material from the metal industry, are normally added in asphalt concrete to replace traditional aggregate. In addition, as a typical microwave absorber, steel slag has the potential to transfer microwave energy into heat, thus increasing the limited self-healing ability of asphalt mixture. This paper aims to investigate the microwave absorption potentials of steel slag and the effect of its addition on road performance. The magnetic parameters obtained from a microwave vector network analyzer were used to estimate the potential use of steel slag as microwave absorber to heal cracks. Meanwhile, the initial self-healing temperature was further discussed according to the frequency sweeping results. The obvious porous structure of steel slag observed using scanning electron microscopy (SEM) had important impacts on the road performance of asphalt mixtures. Steel slag presented a worse effect on low-temperature crack resistance and water stability, while high-temperature stability can be remarkably enhanced when the substitution of steel slag was 60% by volume with the particle size of 4.75–9.5 mm. Overall, the sustainability of asphalt mixtures incorporating steel slag can be promoted due to its excellent mechanical and microwave absorption properties.

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3D reconstruction of moisture damage resulted volumetric changes in porous asphalt mixture

Cited by 34 publications

References 41 publications

Water Stability of Fibers-Enhanced Asphalt Mixtures under Static and Dynamic Damage Conditions

Water Stability of Fibers-Enhanced Asphalt Mixtures under Static and Dynamic Damage Conditions

Experimental Investigation of Moisture Sensitivity and Damage Evolution of Porous Asphalt Mixtures

Microwave Absorption Ability of Steel Slag and Road Performance of Asphalt Mixtures Incorporating Steel Slag

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