Healing Publications

Stress dependence of the long-term equilibrium modulus was modeled
Maxwell components of the relaxation modulus were determined by an improved collocation method
A log-scaled LSRMO should be used as the regression objective for the coefficient determination
Journal link for the paper or Aston Research Explorer link (for full text)
Partially sponsored by H2020/MSCA/IF project - HMAM

Proposed new healing index of bitumen under DSR-based healing test
Analysed advantages of crack length based healing index
Modelled healing rate using Ramberg-Osgood equation
Investigated impacts of damage levels on healing properties
Journal link for the paper or Aston Research Explorer link (for full text)
Partially sponsored by H2020/MSCA/IF project - HMAM

Fabricated two types of waste-derived bitumen
Modelled crack growth using modified Griffith criterion and Paris’ law
Characterised fatigue cracking properties of waste-derived bitumen
Analysed the effect of PAV ageing on fatigue cracking performances
Journal link for the paper or Aston Research Explorer link (for full text)
Partially sponsored by H2020/MSCA/IF project - HMAM

Developed an experimental control method of the asphalt film thickness
Captured the shear behaviour of asphalt-aggregate interface under different asphalt film thickness
Obtained the shear failure mechanism of asphalt-aggregate interface
Journal link for the paper or Aston Research Explorer link (for full text)
Partially sponsored by H2020/MSCA/IF project - HMAM

Crack initiation in bitumen was defined based on fatigue cracking mechanism
An energy-based criterion was developed to predict fatigue crack initiation
Crack initiation is dependent of modulus, surface energy, crack size and load amplitude
Crack initiation criterion was validated and used to determine material surface energy
Polymer modification can improve bitumen resistance to fatigue crack initiation
Journal link for the paper or Aston Research Explorer link (for full text)
Partially sponsored by H2020/MSCA/IF project - HMAM

The crack length in the TS test is determined using a damage mechanics-based DSR-C model
The crack evolution is modeled by a pseudo J-integral based Paris’ law
Pseudo J-integral Paris’ law is able to predict accurately the crack propagation in bituminous binders
The Paris’ law model parameters (A and n) are independent of loading frequency or load amplitude
Journal link for the paper or Aston Research Explorer link (for full text)
Partially sponsored by H2020/MSCA/IF project - HMAM

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