Fiber-reinforced asphalt-concrete – A review

Abtahi, Sayyed Mahdi; Sheikhzadeh, Mohammad; Hejazi, Sayyed Mahdi

doi:10.1016/j.conbuildmat.2009.11.009

Cited by 389 publications

(199 citation statements)

References 32 publications

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“…Adding a small amount of fiber in asphalt mixture is recognized to be an effective method to improve pavement performance, which has gotten much attention due to their improving effects (Abtahi et al, 2010). Compared with ordinary asphalt concrete, fiber reinforced asphalt concrete (FRAC) exhibits several advanced properties, such as improving water stability, rutting resistance and anti-cracking performance in a cold atmosphere (Lee et al, 2005, Park, 2012.…”

Section: Introductionmentioning

confidence: 99%

Evaluation of Fiber Distribution in Steel Fiber Reinforced Asphalt Concrete based on CT Image Analysis

Liao¹,

Pei²,

Zhong³

et al. 2017

dtetr

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ABSTRACT:The premise of steel fiber reinforced asphalt concrete (FRAC) to exhibit multifunctional applications is that fibers are uniformly dispersed in the asphalt mixtures. In this paper, image analysis method was applied to evaluate the fiber distribution in different asphalt mixture samples. X-ray computed tomography (CT) scanner was adopted to capture the images and image processing software (Image-Pro Plus) was assisted to accomplish the following analysis. The distribution coefficient was introduced to evaluate quantitatively distribution of the steel fibers (SFs), the higher value of distribution coefficient, and the more uniform distribution the SFs. Asphalt mixtures with 4% SFs showed better fiber distribution than that with 10% SFs. The distribution coefficient of samples with 10% SFs were 0.7427 and 0.7861, while distribution coefficient of samples with 4% SFs were all over 0.8, which indicates asphalt mixture incorporated with less amount of fiber can obtain more uniform distributed fibers.

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Section: Introductionmentioning

confidence: 99%

Evaluation of Fiber Distribution in Steel Fiber Reinforced Asphalt Concrete based on CT Image Analysis

Liao¹,

Pei²,

Zhong³

et al. 2017

dtetr

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“…For many decades, conventional bituminous materials have been used satisfactorily in most roadway applications. However, due to traffic loading and environmental factors such as temperature, air, and water, the durability of the asphalt concrete mixtures can be greatly affected [3,4]. Improving bituminous mixture properties by using several additives to enhance roadway performance will be of great importance in the field of transportation research [5].…”

Section: Introductionmentioning

confidence: 99%

Laboratory Evaluation of the Stiffness Modulus of a Modified Bituminous Concrete with PR PLAST Sahara

Harizi¹,

Morsli²,

Bensaibi³

2013

JCEA

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Uneven roads surface can be observed on bituminous pavements. This is due to moving loads and climate conditions. If the observed deformations exceed the elastic limit, important damages can occur, so new materials are used to improve the stiffness modulus of bituminous mixtures. To achieve this, a modified bituminous concrete by addition of the PR PLAST Sahara (produced by PR industries and PLAST for Plastic) mainly used in arid region has been studied. The use of this additive at various percentages 0.1, 0.3, 0.6 and 0.9 by weight of bituminous concrete has been investigated to determine its stiffness modulus. An experimental design using the Taguchi tables has been elaborated to reduce the number of tests. Marshall and NAT (Nottingham asphalt tester) tests have been carried out, and a mathematical model of the stiffness modulus has been proposed.

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“…With the aim of improving the behaviour of flexible pavements against these factors, different types of fibres can be added to the asphalt mixtures [5], such as: cellulose and mineral fibres [6]; polymeric fibres like polypropylene and polyester [7]; and steel wool and other waste fibres [8]. In particular, due to the higher tensile strength of metallic fibres compared with asphalt mixtures they can improve the tensile resistance and cohesive force when added to the mixture [5]. Additionally, these fibres can help to prevent the origin and propagation of cracks [9].…”

Section: Introductionmentioning

confidence: 99%

Influence of the Microwave Heating Time on the Self-Healing Properties of Asphalt Mixtures

Norambuena-Contreras

Gonzalez-Torre

2017

Applied Sciences

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Featured Application: A new generation of advanced self-healing asphalt pavements is coming. The asphalt mixture presented in this study could be potentially used to build long-life roads with crack-healing properties through electromagnetic heating, e.g., induction and microwaves.Abstract: This paper aims to evaluate the influence of the microwave heating time on the self-healing properties of fibre-reinforced asphalt mixtures. To this purpose, self-healing properties of dense asphalt mixtures with four different percentages of steel wool fibres were evaluated as the three-point bending strength before and after healing via microwave heating at four different heating times. Furthermore, the thermal behaviour of asphalt mixtures during microwave heating was also evaluated. With the aim of quantifying the efficiency of the repair process, ten damage-healing cycles were done in the test samples. In addition, self-healing results were compared with the fibre spatial distribution inside asphalt samples evaluated by CT-scans. Crack-size change on asphalt samples during healing cycles was also evaluated through optical microscopy. It was found that the heating time is the most influential variable on the healing level reached by the asphalt mixtures tested by microwave radiation. CT-Scans results proved that fibre spatial distribution into the asphalt mixtures play an important role in the asphalt healing level. Finally, it was concluded that 40 s was the optimum heating time to reach the highest healing levels with the lowest damage on the asphalt samples, and that heating times over 30 s can seal the cracks, thus achieving the self-healing of asphalt mixtures via microwave heating.

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Fiber-reinforced asphalt-concrete – A review

Cited by 389 publications

References 32 publications

Evaluation of Fiber Distribution in Steel Fiber Reinforced Asphalt Concrete based on CT Image Analysis

Evaluation of Fiber Distribution in Steel Fiber Reinforced Asphalt Concrete based on CT Image Analysis

Laboratory Evaluation of the Stiffness Modulus of a Modified Bituminous Concrete with PR PLAST Sahara

Influence of the Microwave Heating Time on the Self-Healing Properties of Asphalt Mixtures

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