title: Synthesis and properties of a clean and sustainable deicing additive for asphalt mixture.
abstract: A clean and sustainable deicing additive was prepared via the adsorption of acetate anions (Ac-) by magnesium (Mg) and aluminum (Al) calcined layered double hydroxide (Mg/Al-CLDH). Fourier transform infrared spectroscopy spectrums proved that Ac- had intercalated into LDH structure. X-ray diffraction patterns, scanning electron microscopy and transmission electron microscopy images showed that the intercalation spacing and platelet thickness of Mg and Al layered double hydroxide containing Ac- anions (Mg/Al-Ac- LDH) had been enlarged due to substitution of divalent CO32- anions by a larger quantity of monovalent Ac- anions. Differential scanning calorimetry tests testified that the insoluble Mg2/Al-Ac- LDH evidently decreased the freeze point (FP) of water to -10.68°C. X-ray photoelectron spectroscopy analyses confirmed that the Ac- were strongly confined by the metal layers of LDHs. FP test of asphalt mixtures confirmed that Mg/Al-Ac- LDHs reduced FP to -5.5°C. Immersion test results indicated that Mg/Al-Ac- LDH had a good deicing durability and Ac- did not released from asphalt mixture. Snow melting observation was conducted further testified that Mg/Al-Ac- LDH melted snow or ice sustainably.
authors.affiliation: State Key Laboratory of Silicate Materials for Architectures, Wuhan University of Technology, Wuhan, 430070, PR China.
authors.forename: Chao
authors.initials: C
authors.lastname: Peng
authors.affiliation: State Key Laboratory of Silicate Materials for Architectures, Wuhan University of Technology, Wuhan, 430070, PR China.
authors.forename: Jianying
authors.initials: J
authors.lastname: Yu
authors.affiliation: State Key Laboratory of Silicate Materials for Architectures, Wuhan University of Technology, Wuhan, 430070, PR China; Research Institute of Highway of Ministry of Transport, Beijing, 100088, PR China.
authors.forename: Zhijie
authors.initials: Z
authors.lastname: Zhao
authors.affiliation: Key Laboratory of Advanced Technology for Special Functional Materials of Ministry of Education, Wuhan, 430070, PR China.
authors.forename: Jing
authors.initials: J
authors.lastname: Dai
authors.affiliation: State Key Laboratory of Silicate Materials for Architectures, Wuhan University of Technology, Wuhan, 430070, PR China.
authors.forename: Jingyi
authors.initials: J
authors.lastname: Fu
authors.affiliation: State Key Laboratory of Silicate Materials for Architectures, Wuhan University of Technology, Wuhan, 430070, PR China; Research Institute of Highway of Ministry of Transport, Beijing, 100088, PR China.
authors.forename: Meiling
authors.initials: M
authors.lastname: Zhao
authors.affiliation: State Key Laboratory of Silicate Materials for Architectures, Wuhan University of Technology, Wuhan, 430070, PR China.
authors.forename: Wei
authors.initials: W
authors.lastname: Wang
mesh_terms: D000056:Accident Prevention; D055772:Green Chemistry Technology; D006838:Hydrocarbons / Q000737:chemistry*; D006878:Hydroxides / Q000138:chemical synthesis*; D007053:Ice; D017550:Spectroscopy, Fourier Transform Infrared; D044366:Transition Temperature
chemical_list: D006838:Hydrocarbons; D006878:Hydroxides; D007053:Ice; C006647:asphalt