Synthesis and Property of a Green Melting-Snow Additive for Asphalt Pavement

Chao Peng; Jian Ying Yu; Jing Dai; Zhi Jie Zhao; Jing Yi Fu; Mei Ling Zhao; Wei Wang

doi:10.4028/www.scientific.net/AMM.694.85

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HomeApplied Mechanics and MaterialsApplied Mechanics and Materials Vol. 694Synthesis and Property of a Green Melting-Snow...

Synthesis and Property of a Green Melting-Snow Additive for Asphalt Pavement

Abstract:

Mg-Al Cl^- layered double hydroxide (LDH) was prepared from Mg-Al CO₃^2- LDH by the calcination recovery method. Energy dispersive spectroscopy (EDS) spectra proved that Cl^- anions replaced CO₃^2- anions in the LDH structure. Scanning electron microscopy (SEM) images showed that the platelet thickness of Mg-Al Cl^- LDH were larger than those of Mg-Al CO₃^2- LDH. This increase in the structural dimensions occurred because of that a larger quantity of monovalent Cl^- anions had substituted divalent CO₃^2- anions. The result of freezing temperature tests indicated that Mg-Al Cl^- LDH is more effective than Mg-Al CO₃^2- LDH in melting snow. Conductivities of immersion liquids testified that Cl^- anions are restricted in asphalt mixtures by Mg-Al Cl^- LDH without negatively affecting the surrounding environment and pavement. Snow melting rates for Mg-Al Cl^- LDH before and after immersion did not change, indicating that rain did not weaken the effect of Mg-Al Cl^- LDH on melting snow and thus did not pollute the environment.

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Periodical:

Applied Mechanics and Materials (Volume 694)

Pages:

85-89

DOI:

https://doi.org/10.4028/www.scientific.net/AMM.694.85

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Online since:

November 2014

Authors:

Chao Peng, Jian Ying Yu, Jing Dai, Zhi Jie Zhao, Jing Yi Fu, Mei Ling Zhao, Wei Wang

Keywords:

Asphalt Mixture (AC), Electron Microscopy, Nanoparticle, Self-Melting

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