Evaluation of surface organic layered double hydroxides on the anti-ageing performance of asphalt - Details

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EI Scopus SCIE

Abstract：

To　promote　the　anti-ageing　performance　of　asphalt,　layered　double　hydroxides　(LDHs)　modified　by　propyl　trimethoxylsilane　(MPMS)　was　prepared　and　applied　to　modify　asphalt.　Fourier　transform　infrared　spectroscopy　(FTIR)　showed　that　MPMS　was　chemically-grafted　on　the　surface　of　LDHs.　The　interaction　between　LDHs　and　asphalt　was　significantly　enhanced　after　MPMS　organic　modification,　and　MPMS　organic　LDHs　(OMLDHs)　exhibited　better　compatibility　in　asphalt.　OMLDHs　and　LDHs　could　enhance　the　high-temperature　properties　of　asphalt,　particularly　OMLDHs.　After　ageing,　the　properties　and　structure　of　asphalt　were　dramatically　degenerated.　The　incorporation　of　LDHs　could　inhibit　the　oxygenic　groups　increase　in　asphalt　molecules　during　ageing,　and　retard　the　gelatinization　of　colloidal　structures.　LDHs　could　alleviate　the　negative　effect　of　ageing　on　asphalt,　and　improve　the　anti-ageing　performance　of　asphalt.　The　improvement　effectiveness　of　LDHs　on　the　anti-ageing　performance　of　asphalt　was　remarkably　improved　after　MPMS　modification.

Keyword：

Anti-ageing performance Asphalt Chemical components Chemical structure Layered double hydroxides Molecular dynamics simulation Rheological properties Surface organic modification

Community：

[ 1 ] [Zhang, Canlin]Fuzhou Univ, Coll Civil Engn, Fuzhou 350108, Peoples R China
[ 2 ] [Chen, Minxuan]Fuzhou Univ, Coll Civil Engn, Fuzhou 350108, Peoples R China
[ 3 ] [Xu, Song]Fuzhou Univ, Coll Civil Engn, Fuzhou 350108, Peoples R China
[ 4 ] [Li, Yifei]Fuzhou Univ, Coll Civil Engn, Fuzhou 350108, Peoples R China
[ 5 ] [Que, Yun]Fuzhou Univ, Coll Civil Engn, Fuzhou 350108, Peoples R China
[ 6 ] [Wang, Ting]Fuzhou Univ, Testing Ctr, Fuzhou 350108, Peoples R China
[ 7 ] [Zhang, Canlin]Fujian South Highway Machinery Co, Postdoctoral Work Stn, Quanzhou 362021, Peoples R China
[ 8 ] [Wang, Lan]Huaqiao Univ, Key Lab Struct Engn & Disaster Prevent Fujian Prov, Xiamen 361021, Peoples R China
[ 9 ] [Lin, Xiaowei]Zhejiang Guangli Construct Machinery Co Ltd, Lishui 323000, Peoples R China
[ 10 ] [Chen, Minxuan]Fujian Expressway Maintenance Engn Co Ltd, Fuzhou 350005, Peoples R China