Investigation of rheological and fatigue properties of asphalt mixtures containing polyester fibers

Wu, Shaopeng; Ye, Qunshan; Li, Ning

doi:10.1016/j.conbuildmat.2007.07.018

Cited by 163 publications

(54 citation statements)

References 9 publications

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“…An alternative to improving the durability of asphalt is the addition of different types of fibres or particles that enhance the mechanical properties of the mixture. Some of the fibres or particles are products fabricated with the main purpose of material reinforcement [2][3][4][5], while others are waste obtained from industry [6]. In addition to the enhancement of the mechanical properties of the asphalt mixture, metallic fibres or particles from virgin materials, or from waste [7] can improve the electrical and thermophysical properties of asphalt mixtures [8].…”

Section: Introductionmentioning

confidence: 99%

Effect of metallic waste addition on the electrical, thermophysical and microwave crack-healing properties of asphalt mixtures

Norambuena-Contreras

González

Concha

et al. 2018

Construction and Building Materials

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Effect of metallic waste addition on the electrical, thermophysical and microwave crackhealing properties of asphalt mixtures Norambuena-Contreras, J.; Gonzalez, A.; Concha, J. L.; Gonzalez-Torre, I.; Schlangen, E. h i g h l i g h t sFibres and shavings from metallic waste were added in asphalt mixtures. Electrical, thermophysical and microwave crack-healing properties of asphalt were evaluated. CT-Scan results showed that shavings were crushed during asphalt mixing process. Metallic waste addition did not improve thermal and electrical properties. Healing levels after microwave heating times of 40 s twice those obtained after 30 s. a b s t r a c tThis paper aims to evaluate the effect of metallic waste addition on the electrical, thermophysical and microwave crack-healing properties of asphalt mixtures. With this purpose, asphalt mixtures with two different types of metallic waste, steel wool fibres and steel shavings, added in four different contents, were tested. Electrical and thermophysical properties of asphalt mixture specimens with, and without, metallic waste were measured. The spatial distribution of the metallic waste inside the asphalt mixture samples was evaluated by using X-ray computed tomography. In addition, crack-healing properties of asphalt samples using microwave radiation heating were assessed at two different healing times, 30 s and 40 s. To quantify the efficiency of the healing process, five healing cycles were carried out for each asphalt sample. The main results showed that asphalt mixtures with shavings presented lower air void contents than mixtures with fibres. Moreover, fibres produced an increase in the electrical conductivity of the mixtures because long fibres in the mixtures form electrically conductive channels. In contrast, shavings did not have significant effect on the electrical properties of the mixtures. Likewise, it was proven that metallic waste reduced the thermal conductivity and the specific heat capacity of asphalt mixtures. Conversely, shavings decreased the thermal diffusivity of asphalt mixtures regardless of their content. Overall, it was found that the healing level reached by the asphalt mixtures tested by microwave radiation depends on the healing time and the type and content of metallic waste used. CT-scans results proved that the spatial distribution of metallic waste inside the asphalt mixture samples was not uniform and played an important role in the asphalt self-healing properties using microwave radiation heating.

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Section: Introductionmentioning

confidence: 99%

Effect of metallic waste addition on the electrical, thermophysical and microwave crack-healing properties of asphalt mixtures

Norambuena-Contreras

González

Concha

et al. 2018

Construction and Building Materials

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“…A noticeable decrease in flow values and less reflection cracking were observed in modified samples (Tapkın, 2008). In another work, the effect of polyester (PES) fibers on mechanical properties of asphalt was investigated (Wu, Ye, & Li, 2008). The obtained results revealed that, the fatigue life of fiber modified asphalt mixture was increased with 1.9, 2.9, and 3.6 times at .5, .4, and .3 stress ratio, respectively.…”

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confidence: 85%

Developing a hybrid artificial neural network-genetic algorithm model to predict resilient modulus of polypropylene/polyester fiber-reinforced asphalt concrete

Vadood

Johari

Rahai

2014

The Journal of The Textile Institute

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Up to now various kinds of fibers are used to improve the hot mix asphalt (HMA) performance, but a few works have been undertaken on the hybrid fiber-reinforced HMA. Therefore, in this paper, the resilient modulus of the modified HMA samples using polypropylene and polyester fibers (hybrid and single modes) was evaluated and modeled by regression method and artificial neural network (ANN). As ANN includes different parameters such as the number of neurons in hidden layer influenced on the prediction accuracy, genetic algorithm (GA) was used to optimize the ANN parameters. Also, GA parameters were optimized using the trial and error method such as the population size. The obtained results indicated that the optimized ANN with two hidden layers and two neurons in each hidden layer can predict the resilient modulus of fiber-reinforced HMA with high accuracy (correlation coefficient: .96).

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“…The former can be related to the material strength and the latter provides information about the ratio between elastic and viscous response during the shearing process. Creep compliance is a fundamental material property that represents the rheological behavior of viscoelastic materials 14–17. Accurate determination of the creep compliance of asphalt is crucial to evaluate the time/frequence dependent stress and strain response 18–20.…”

Section: Introductionmentioning

confidence: 99%

Effects of epoxy resin contents on the rheological properties of epoxy‐asphalt blends

Cong

Chen

2010

J of Applied Polymer Sci

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Epoxy-asphalt and its mixture have been proposed for the long span orthotropic steel deck bridges because it shows excellent heat resistance, free from bleeding, low temperature cracking resistance, and aggregate scattering resistance. In this study, the effects of epoxy resin contents on rheological properties of epoxy-asphalt binders were studied using dynamic shear rheometer. Experimental results indicated that the improvement of the viscoelastic performance of asphalt binder is noticeable at high temperatures, at which the elasticity is increased (higher G* and lower d) for epoxy-asphalt with increase in epoxy resin contents. The viscous behavior of the asphalt also increased when epoxy resin is added. Creep test results indicated that epoxy-asphalt binder can not only resist deformation at elevated temperatures but recover satisfactorily from strain.

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Investigation of rheological and fatigue properties of asphalt mixtures containing polyester fibers

Cited by 163 publications

References 9 publications

Effect of metallic waste addition on the electrical, thermophysical and microwave crack-healing properties of asphalt mixtures

Effect of metallic waste addition on the electrical, thermophysical and microwave crack-healing properties of asphalt mixtures

Developing a hybrid artificial neural network-genetic algorithm model to predict resilient modulus of polypropylene/polyester fiber-reinforced asphalt concrete

Effects of epoxy resin contents on the rheological properties of epoxy‐asphalt blends

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