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07 Jan 2022: TRB 101st Annual Meeting, Washington, D.C., USA.
07 Jan 2022: TRB 101st Annual Meeting, Washington, D.C., USA.
12 July 2019: A new paper published at Construction and Building Materials
12 July 2019: A new paper published at Construction and Building Materials
Impact of anti-ageing compounds on oxidation ageing kinetics of bitumen by infrared spectroscopy analysis
Impact of anti-ageing compounds on oxidation ageing kinetics of bitumen by infrared spectroscopy analysis
A screening method for anti-ageing additives (AACs) of bitumen was proposed.
Normalized carbonyl index (NCI) was adopted to quantify the oxidative ageing.
The anti-ageing effectiveness of AACs was measured by NCI based ageing kinetics.
The activation energy Ef can be used to determine the effectiveness of AACs.
Journal link for the paper or Aston Research Explorer link (for full text)
Partially sponsored by H2020/MSCA/IF project - AMAM
14 February 2019: A new paper published at Applied Surface Science
14 February 2019: A new paper published at Applied Surface Science
Molecular dynamics investigation of interfacial adhesion between oxidised bitumen and mineral surfaces
Molecular dynamics investigation of interfacial adhesion between oxidised bitumen and mineral surfaces
Van der Waals forces dominate interfacial interaction of bitumen with acidic minerals.
Electrostatic forces dominate interfacial interaction of bitumen with alkali minerals.
Oxidation causes molecular aggregation and higher polarity of the bitumen.
Water weakens while oxidation strengths bitumen-mineral interfacial adhesion.
Coupled effect of water and oxidation on adhesion depends on mineral’s acid-base.
Journal link for the paper or Aston Research Explorer link (for full text)
Partially sponsored by H2020/MSCA/IF project - AMAM
13-17 Jan 2019: TRB 98th Annual Meeting, Washington, D.C., USA.
13-17 Jan 2019: TRB 98th Annual Meeting, Washington, D.C., USA.
27 April 2018: A new paper published at Construction and Building Materials
27 April 2018: A new paper published at Construction and Building Materials
Impact of minerals and water on bitumen-mineral adhesion and debonding behaviours using molecular dynamics simulations
Impact of minerals and water on bitumen-mineral adhesion and debonding behaviours using molecular dynamics simulations
Adhesion between bitumen and aggregate mainly results from van der Waals internations for neutral minerals (e.g., quartz)
Adhesion is primarily due to the electrostatic interactions for alkali minerals (e.g., calcite, albite and microcline)
The bitumen-mineral debonding due to water is a thermodynamically favourable process.
Journal link for the paper or Aston Research Explorer link (for full text)
Partially sponsored by H2020/MSCA/IF project - AMAM
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