Behavior of Epoxy-Asphalt Airfield Pavements, 1963 Inspections

Joseph, A. H.

doi:10.21236/ad0735701

Cited by 4 publications

(2 citation statements)

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“…New or relatively new binding systems specially designed to produce super-durable and long-lasting pavement materials have been proposed. One promising technology is the epoxy polymers which are able to lower the fracture sensitivity of asphalt materials (Widyatmoko et al 2006, Youtcheff et al 2006, Herrington and Alabaster 2008, Luo et al 2015, Wu et al 2017, Chen et al 2020, Apostolidis et al 2020a, and it has been utilised successfully as premium surfacing solution for bridge (Balala 1969, Gaul 1996, Huang et al 2003, Lu and Bors 2015, airfield (Burns 1964, Joseph 1965) and roadway pavements (ITF 2017, Zegard et al 2019, Dinnen et al 2020.…”

Section: Introductionmentioning

confidence: 99%

Oxidative aging of epoxy asphalt

Apostolidis

Liu

Erkens

et al. 2020

International Journal of Pavement Engineering

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Oxidative aging is responsible for the irreversible asphalt stiffening and embrittlement leading to asphalt pavements of increased susceptibility to fatigue and thermal cracking. In recent years, various flexible binders have been introduced in asphalt industry to produce long-life pavements and the epoxy asphalt binders are among them. Nevertheless, in-depth understanding of the oxidative aging mechanism of epoxy asphalt binders and binding systems is still needed to enable reliable predictions of material degradation through service life. In this research, the compositional and rheological changes of epoxy asphalt, with and without filler, were analysed by means of Fourier Transform Infrared spectroscopy and Dynamic Shear Rheometer. Especially, kinetics (Arrhenius) parameters of epoxy asphalt have been determined by tracking the chemical composition changes. Oxidation of carbon species in epoxy asphalt is compositional dependent, and low values of activation energy accompany in low values of reaction rate are shown by adding epoxy in asphalt. Furthermore, the epoxy asphalt mastics (binders with filler) have been subjected to rheological testing to evaluate the stiffening effect as oxidation proceeds. Increase of modulus over a wide range of frequencies, decrease of frequency dependency of modulus of epoxy asphalt and shifting of phase angle to lower values are some important observations noticed as well. Overall, oxidation in epoxy asphalt materials occurs slowly yielding to oxygen-resistant binders when epoxy compounds are incorporated in asphalt binders.

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Section: Introductionmentioning

confidence: 99%

Oxidative aging of epoxy asphalt

Apostolidis

Liu

Erkens

et al. 2020

International Journal of Pavement Engineering

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“…The Shell Petroleum Co. developed an EA binder in the 1950s as an airport paving material because of its ability to resist oil and heat. In 1967, it was first used as a wearing surface on the orthotropic deck of the San Mateo–Hayward Bridge in San Francisco, California . EA binder was introduced into China and first applied to the Nanjing Second Yangtze River Bridge in 2000.…”

Section: Introductionmentioning

confidence: 99%

Investigation of epoxy‐resin‐modified asphalt binder

Cong

Tian

Liu

et al. 2016

J of Applied Polymer Sci

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Epoxy asphalt (EA) binder has been used extensively for paving long-span bridges in many countries because it shows excellent heat resistance, is free from bleeding, has a low-temperature cracking resistance, and has aggregate scattering resistance. EA binders were prepared by the mixture of asphalt, epoxy resin, and a new curing agent (CR) with functional groups. The properties of the EA binder were characterized by their viscosity, tensile strength, elongation at break, compatibility, morphology, glass transition temperature (T g ), contact angle, and surface free energy. The curing process was analyzed. The results indicate that the curing temperature and asphalt content had significant effects on the properties of the EA binder. We observed that most of the strength was generated after the first 3 h at 165 8C; this provided good workability for EA pavement construction. The CR with various functional groups improved the compatibility and morphology of the EA binder. The test results show that T g of the EA binder decreased and the contact angles increased with increasing asphalt content. It is worth noting the contact angles between water and the EA binder were always greater than 908; this implied that the EA binder was hydrophobic and, hence, water repellent. The surface free energy and dispersion force increases with decreasing asphalt content. However, the polarity forces decreased with decreasing asphalt content.

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Alternate uses of epoxy asphalt on bridge decks and roadways

Bors²

2015

Construction and Building Materials

173

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Behavior of Epoxy-Asphalt Airfield Pavements, 1963 Inspections

Cited by 4 publications

References 0 publications

Oxidative aging of epoxy asphalt

Oxidative aging of epoxy asphalt

Investigation of epoxy‐resin‐modified asphalt binder

Alternate uses of epoxy asphalt on bridge decks and roadways

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