A platform for research: civil engineering, architecture and urbanism
A platform for research: civil engineering, architecture and urbanism
Self-healing and fatigue performance of poly 2-hydroxyethyl methacrylate modified bitumen
Highlights The PHEMA modifier significantly affects the healing potential of bitumen. The results show that the trends of fatigue life logarithm are almost equal to the healing indices trends. NMR tests of RTFO-aged modified samples show the highest slope of healing. Aging effects on self-healing capability are decreased in modified bitumen. The healing indices are between 0.26 and 4.45 for all the healing tests.
Abstract This research study aims to investigate fatigue and self-healing performance of poly 2-hydroxyethyl methacrylate modified bitumen using Linear Amplitude Sweep, Time Sweep, Fourier-Transform Infrared Spectroscopy, Scanning Electron Microscope and Nuclear Magnetic Resonance tests and healing indices. Results show that modifying virgin bitumen with PHEMA expands the aromatic part of the binder. NMR and FTIR results show aging effects on healing capability are reduced by PHEMA addition. Also, the results show that healing indices are between 0.26 and 4.45. The comparison of HI indices trends with Nf trend shows that the PHEMA%-Log (Nf) trends are almost equal to the PHEMA%-HIFTIR&NMR trends.
Self-healing and fatigue performance of poly 2-hydroxyethyl methacrylate modified bitumen
Highlights The PHEMA modifier significantly affects the healing potential of bitumen. The results show that the trends of fatigue life logarithm are almost equal to the healing indices trends. NMR tests of RTFO-aged modified samples show the highest slope of healing. Aging effects on self-healing capability are decreased in modified bitumen. The healing indices are between 0.26 and 4.45 for all the healing tests.
Abstract This research study aims to investigate fatigue and self-healing performance of poly 2-hydroxyethyl methacrylate modified bitumen using Linear Amplitude Sweep, Time Sweep, Fourier-Transform Infrared Spectroscopy, Scanning Electron Microscope and Nuclear Magnetic Resonance tests and healing indices. Results show that modifying virgin bitumen with PHEMA expands the aromatic part of the binder. NMR and FTIR results show aging effects on healing capability are reduced by PHEMA addition. Also, the results show that healing indices are between 0.26 and 4.45. The comparison of HI indices trends with Nf trend shows that the PHEMA%-Log (Nf) trends are almost equal to the PHEMA%-HIFTIR&NMR trends.
Self-healing and fatigue performance of poly 2-hydroxyethyl methacrylate modified bitumen
Khavandi Khiavi, Alireza (author) / Ghanbari, Ali (author) / Rasouli, Ramin (author)
2020-11-11
Article (Journal)
Electronic Resource
English
| British Library Online Contents | 2009