Performance evaluation of asphalt mixture exposed to dynamic water and chlorine salt erosion

Xiong, Rui; Chu, Ci; Qiao, Ning; Wang, Lu; Fa, Yang; Sheng, Yanping; Guan, Bowen; Niu, Dongyu; Geng, Jiuguang; Chen, Huaxin

doi:10.1016/j.conbuildmat.2018.12.190

Cited by 79 publications

(17 citation statements)

References 5 publications

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“…As the age increased, the strength of the specimens soaked in clear water decreased most rapidly at 28 days, by 11.7%, while the strength of the specimens soaked in 20% brine decreased most slowly, by 8.5%. Given that there is salt crystallization in 20% brine-immersed specimens that fills small voids, the splitting strength increased, which counteracts some of the damaged by water [29].…”

Section: Resultsmentioning

confidence: 99%

Investigation of Voids Characteristics in an Asphalt Mixture Exposed to Salt Erosion Based on CT Images

Xiong

Jiang

et al. 2019

Materials

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The performance of an asphalt mixture will deteriorate under the condition of salt erosion, but there are different opinions on the mechanism of deterioration. Few studies have focused on the relation between the change of void characteristics and performance deterioration of an asphalt mixture exposed to salt erosion. To explore the relation between the air voids characteristics of an asphalt mixture and mechanical damage under salt erosion, the mechanical damage in an asphalt mixture was measured by splitting strength. The asphalt mixture specimens, immersion solutions, asphalt mortar, and aggregate were scanned with CT technology. To segment the voids, the Otsu method was used over asphalt mortar and solution range of CT values. A three-dimensional reconstruction of the CT image was performed with Mimics 20 software to calculate the asphalt mixture’s void characteristics. On this basis, the relationships between the change in void characteristics and splitting strength were analyzed. The results showed that the ideal calculated void fraction can be obtained by threshold segmentation of the image void/asphalt mortar interface with the local CT value Otsu method. Under the salt corrosion environment, the increase of open voids of an asphalt mixture is linearly correlated with the decrease of splitting strength, while salts’ crystallization in the open voids produces crystallization pressure, accelerating the volume growth of open voids. The early damage of an asphalt mixture suffered from the salt may be mainly physical damage. These results can provide a useful reference for the performance of damage research on asphalt mixtures in salt enrichment areas.

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Section: Resultsmentioning

confidence: 99%

Investigation of Voids Characteristics in an Asphalt Mixture Exposed to Salt Erosion Based on CT Images

Xiong

Jiang

et al. 2019

Materials

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“…e SK-90# matrix asphalt whose penetration is between 80∼100 (0.1 mm) was used for all experiments. Table 1 shows the physical properties of asphalt binder following ASTM standards [16].…”

Section: Asphaltmentioning

confidence: 99%

Investigation on Deicing Property of Steel Wool Fiber‐Reinforced Asphalt Mixture by Induction Heating

Xiong

et al. 2020

Advances in Materials Science and Engineering

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In order to effectively solve the traffic safety problem caused by snow and ice covering the pavement in winter, steel wool fibers with different length and content were adopted in asphalt mixture to investigate its deicing performance. The deicing principle of steel wool fiber asphalt mixture by induction heating was expounded. Effects of different ice thicknesses, output currents, and ambient temperatures for asphalt mixture deicing performance were studied using an indoor-simulated induction heating deicing test. The deicing mechanism of steel wool fiber asphalt mixture by induction heating was analyzed. Grey relation entropy analysis between the average melting ice rate and the influencing factors was determined. The results show that the average ice melting rate of the asphalt mixture increases with the increase in steel wool fiber length and content. The steel wool fiber asphalt mixture heated by electromagnetic induction obtains satisfactory result. The average melting ice rate of asphalt mixture containing 6% steel wool fiber with a length of 3 mm can reach 0.50°C·s−1 at an ambient temperature of −5°C. The thinner the ice and the higher the ambient temperature, the higher the average melting ice rate. The output current is positively correlated with the average melting ice rate. The degree of influence of the five influence factors on the average melting ice rate is ranked in order as follows: fiber content, fiber length, output current, ambient temperature, and ice layer thickness.

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“…However, asphalt pavement is prone to high temperature rutting, low temperature cracking, water damage and spalling [ 4 , 5 , 6 , 7 , 8 , 9 , 10 ]. In some special natural environments, especially in coastal areas and northwest saline soil areas, corrosion medium such as sulfate–chloride would lead to the serious damage of asphalt pavement after several years of service, and the service life of the road is greatly reduced [ 11 , 12 , 13 , 14 , 15 ]. In addition, the road surface is easy to freeze in winter.…”

Section: Introductionmentioning

confidence: 99%

“…Firstly, many scholars have explored the macro performance changes of asphalt materials in the salt solution environment. Xiong et al carried out the durability evaluation of an asphalt mixture in the salt corrosion condition under the effect of dynamic water pressure by the splitting test [ 12 ]. Wang et al investigated the pavement performances of an asphalt mixture containing salt-storage aggregates with the function of snow melting [ 16 ].…”

Section: Introductionmentioning

confidence: 99%

Study on Performance Damage and Mechanism Analysis of Asphalt under Action of Chloride Salt Erosion

et al. 2021

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This study aims to investigate the performance evolution and mechanism of asphalt under action of chloride salt erosion. Asphalt samples soaked with five different snow melting chloride salt concentrations were taken as the research object. Then, the high-temperature performance, low-temperature performance, temperature sensitivity and asphalt–aggregate adhesion property of asphalt samples were carried out. Additionally, Fourier transform infrared spectroscopy (FTIR) was used to explore the mechanism of chloride salt erosion on asphalt. Test results showed the linear variation relationships of high-temperature performance, low-temperature performance and temperature sensitivity with chloride salt concentrations. The high-temperature performance of asphalt would be improved by chloride snowmelt salt. With the increase in the chloride salt solution concentration, the low-temperature performance of asphalt became worse, and the temperature sensitivity increased. Moreover, after the effect of the chloride salt solution, the asphalt–aggregate adhesion property decreased with the increase in the chloride salt solution concentration. It is necessary to control the amount of chloride snowmelt salt in the actual snow removal projects. Finally, based on Fourier transform infrared spectroscopy, the mechanism of chloride salt erosion on asphalt was preliminarily explored. With the increase in the chloride salt solution concentration, the proportion of light components (saturated fraction, aromatic fraction) in asphalt decreased, and the proportion of heavy components (resin and asphaltene) with good thermal stability increased.

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Performance evaluation of asphalt mixture exposed to dynamic water and chlorine salt erosion

Cited by 79 publications

References 5 publications

Investigation of Voids Characteristics in an Asphalt Mixture Exposed to Salt Erosion Based on CT Images

Investigation of Voids Characteristics in an Asphalt Mixture Exposed to Salt Erosion Based on CT Images

Investigation on Deicing Property of Steel Wool Fiber‐Reinforced Asphalt Mixture by Induction Heating

Study on Performance Damage and Mechanism Analysis of Asphalt under Action of Chloride Salt Erosion

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