The Anti-aging Performance of Emulsified Asphalt

Zhao, H.; Li, H.-P.; Ke-jian, Liao; Li, Y.-G.

doi:10.1080/10916461003792336

Cited by 5 publications

(4 citation statements)

References 5 publications

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“…Nevertheless, there are some intractable problems of using emulsified asphalt in fog seal, including aging of emulsion under ultraviolet, poor permeability, and moisture susceptibility [21,22,23]. Therefore, it is of great significance to explore innovative fog seal materials.…”

Section: Introductionmentioning

confidence: 99%

Silicone Resin Polymer Used in Preventive Maintenance of Asphalt Mixture Based on Fog Seal

Cui

et al. 2019

Polymers

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The commonly used materials in fog seal are emulsified asphalt and modified emulsified asphalt. Nevertheless, there are some intractable problems including aging under ultraviolet, poor permeability, and moisture susceptibility. Therefore, silicone resin polymer was used as a kind of innovative fog seal material in this study. Physicochemical properties of solidified silicone resin were characterized. X-ray computed tomography and 3D reconstruction technology were used to evaluate permeability and distribution of silicone resin polymer in an asphalt mixture. Moisture sensitivity and high-temperature performance of the asphalt mixture maintained by silicone resin polymer were also detected. The results show that surface characteristic of silicone resin can effectively isolate moisture, thereby improving moisture resistance of the asphalt mixture. Silicone resin was found to be evenly distributed throughout the pores of a sample when the dosage was 400 or 600 mL/m2. The pore filling rate increased by 16.3% when the dosage was changed from 200 to 400 mL/m2, whereas it only increased by 3.7% when dosage increased from 400 to 600 mL/m2. Moisture damage resistance of asphalt mixtures generally increased as the dosage of silicone was increased. However, as the dosage increased from 400 to 600 mL/m2, the growth rate in residual Marshall stability (RMS) and tensile strength ratio (TSR) slowed significantly since the pore filling effect of silicone has reached the upper limit. Dosage of silicone resin has little effect on the results of the rutting test while it has significant influence on Hamburg wheel tracking test (HWT). Furthermore, it was found that 400 mL/m2 is the optimum silicone dosage for open-graded friction course (OGFC)-13 mixture in consideration of permeability, distribution, performance of mixture, and economic cost.

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Section: Introductionmentioning

confidence: 99%

Silicone Resin Polymer Used in Preventive Maintenance of Asphalt Mixture Based on Fog Seal

Cui

et al. 2019

Polymers

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“…Yongjoo et al (2011) studied the cold in-place recycling (CIR) mixture composed of foamed and emulsified asphalt, and found that the CIR-foam sample showed a higher tensile strength and lower water content than the more conventional CIR-latex sample. Zhao et al (2012) studied the aging resistance of emulsified asphalt using the weightlessness coefficient method. It was found that the aging resistance of emulsified asphalt was better than that of the original asphalt.…”

Section: Emulsifier and Emulsified Asphaltmentioning

confidence: 99%

Influence of Emulsifier on Surface Mass Transfer Based on Molecular Dynamics Simulations

et al. 2020

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To explore the effect of emulsifier structure on mass transfer performance, and provide theoretical basis and ideas for the structure design of new asphalt emulsifier. The mass transfer process of the anionic surfactant sodium dodecyl benzene sulfonate (SDBS) and its four isomers on the solid surface of calcium carbonate, as well as the resulting main chemical component of its aggregates, were studied using molecular dynamics (MD) simulations. It was found that the SDBS and its isomers can be adsorbed on the calcium carbonate surface over a relatively short time and gradually form an aggregate structure during the mass transfer process. In this process, Na ions have no obvious aggregation behavior in the polar head of the emulsifier. The calculated interfacial interaction energy indicates that the adsorption performance and aggregation on the calcium carbonate surface are related to the degree of branching and steric hindrance of the emulsifier molecule. Both the lipophilic group and the hydrophilic group in the emulsifier promote its diffusion into the solution. The results show that molecular dynamics (MD) simulations can be used to supplement experiments to provide the necessary microscopic information and theoretical basis for further experimentation.

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“…A fog seal can easily age under the action of ultraviolet rays because its materials are all organic matter. Therefore, many studies have focused on the aging resistance of fog seals [11,12,24]. In addition, studies on the bond performance of fog seals have also been performed [11,25].…”

Section: Introductionmentioning

confidence: 99%

Development and Application of Skid Resistance Fog Seal for Pavements

Jiang

Tian

et al. 2020

Coatings

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The performance of a skid resistance fog seal is studied to develop a high bond performance road skid resistance fog seal. Accordingly, a fog seal is developed based on the bond strength, permeability, and aging resistance. To develop the skid resistance fog seal herein, the skid resistance particle types and dosages are optimized according to the skid and wear resistance properties. The fog seal performance is then verified. Furthermore, the road performance of the skid resistance fog seal is studied, and the optimal amount of the skid resistance fog seal is proposed. Finally, the influence of the construction process on the skid and wear resistance is investigated. The results show that the self-made skid resistance fog seal has better bond strength, permeability, and aging resistance. The 0.6 kg/m2 skid resistance fog seal exhibits the best skid and wear resistance and water penetration performance, while the skid resistance fog seal constructed by the premix process has the best skid and wear resistance properties.

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The Anti-aging Performance of Emulsified Asphalt

Cited by 5 publications

References 5 publications

Silicone Resin Polymer Used in Preventive Maintenance of Asphalt Mixture Based on Fog Seal

Silicone Resin Polymer Used in Preventive Maintenance of Asphalt Mixture Based on Fog Seal

Influence of Emulsifier on Surface Mass Transfer Based on Molecular Dynamics Simulations

Development and Application of Skid Resistance Fog Seal for Pavements

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