Mechanical performance of asphalt mixtures modified by bio-oils derived from waste wood resources

Yang, Xu; You, Zhanping; Dai, Qingli; Mills-Beale, Julian

doi:10.1016/j.conbuildmat.2013.11.017

Cited by 220 publications

(93 citation statements)

References 26 publications

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“…Using enhanced asphalt binder has played an important role in minimizing pavement distresses while improving long-term performance of asphalt pavements. Polymer modification of the binder has been introduced as an alternative to enhance the physical and rheological behaviors of asphalt binder, resulting in enhanced performance of asphalt mixture [2,3].…”

Section: Introductionmentioning

confidence: 99%

Nanoclay application to asphalt concrete: Characterization of polymer and linear nanocomposite-modified asphalt binder and mixture

Golestani

Nam

Nejad

et al. 2015

Construction and Building Materials

127

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Section: Introductionmentioning

confidence: 99%

Nanoclay application to asphalt concrete: Characterization of polymer and linear nanocomposite-modified asphalt binder and mixture

Golestani

Nam

Nejad

et al. 2015

Construction and Building Materials

127

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“…The bio-derived materials are produced using various raw materials and are combined with a bituminous binder in a wide range of proportions [8][9][10]. As studied earlier [11], such materials may also change the binder and asphalt mixture stiffness, allowing for rejuvenating action.…”

Section: Introductionmentioning

confidence: 99%

Thermal and Fatigue Evaluation of Asphalt Mixtures Containing RAP Treated with a Bio-Agent

et al. 2017

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Environment conservation and diminishing natural resources caused an increase in popularity of the application of renewable bio-origin resources for the construction of road pavement. Currently, there are known additions of bio-origin materials for bitumen modification. Such material is also used as a flux additive for bitumen or as a rejuvenator once working with reclaimed asphalt pavement (RAP). This paper presents research dealing with asphalt mixtures with RAP modified with a bio-agent of rapeseed origin. The main idea of the conducted research was to apply more RAP content directly to the batch mix plant without extra RAP heating. The RAP used in this study was milled from a base asphalt layer; the addition of RAP stiffens new asphalt mixtures. A bio-agent, due to its fluxing action, was used to support the asphalt mixing process and to decrease the over-stiffening of the mixture caused by RAP addition. This research includes bitumen and mixture tests. For the bitumen study, three different bitumens (35/50, 50/70, and 70/100) were tested in a dynamic shear rheometer (DSR) for complex modulus G* and for phase angle |δ| in the temperature range 0-100 • C. The reference mixture and mixtures with 2.5% bio-agent were tested to assess the influence of RAP and the bio-agent addition on the asphalt mixture properties. Low temperature behavior (TSRST), stiffness, and fatigue resistance (4PB) were tested. Based on the bitumen test, it was determined that even a low rate of bio-agent (2.5%) beneficially changes bitumen properties at a low temperature; moreover, polymerization processes occurring in the second stage of the process improves bitumen properties at a high operational temperature. The research with these asphalt mixtures demonstrates that the bio-origin flux acts as a rejuvenator and allows for an application of 30% cold RAP. Thermal cracking resistance of the mixture with RAP and 2.5% bio-agent improved. The bio-agent removes unfavorable stiffening of RAP and increases the fatigue resistance of the asphalt mixture.

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“…In this study, the testing temperature was selected to be -12°C. The test is conducted through a three point bending test while measuring the deformation at the mid span of the beam under a constant load; collected deformation data during the loading time are then used to calculate stiffness using Equation 3 (Yang et al, 2013): ( ) ( ) …”

Section: Bending Beam Rheometer (Bbr)mentioning

confidence: 99%

Application of Bio-Modified Montmorillonite Clay to Enhance Asphalt Oxidation Resistance

Hosseinnezhad¹,

Fini²,

Abu-Lebdeh³

2018

American Journal of Engineering and Applied Sciences

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This study evaluates the effectiveness of using a Bio-modified Nanoclay additive (BNC) to reduce the oxidative aging of asphalt pavements. The study results through X-Ray Diffraction analysis showed that the modification of montmorillonite clay with bio-modifier increased the basal d-spacing of clay. The resulting nanoclay with increased interlayer spacing was chosen for application in asphalt binder. Rheological characterization of clay-modified asphalt binder were studied before and after oxidation aging. The effects of BNC on asphalt complex modulus were observed to be prevailing in the intermediate to high-temperature range. The aging resistance of asphalt binder showed improvement with the addition of nanoclay and the improvement was more notable in presence of bio modified-nanoclay than pure clay.

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Mechanical performance of asphalt mixtures modified by bio-oils derived from waste wood resources

Cited by 220 publications

References 26 publications

Nanoclay application to asphalt concrete: Characterization of polymer and linear nanocomposite-modified asphalt binder and mixture

Nanoclay application to asphalt concrete: Characterization of polymer and linear nanocomposite-modified asphalt binder and mixture

Thermal and Fatigue Evaluation of Asphalt Mixtures Containing RAP Treated with a Bio-Agent

Application of Bio-Modified Montmorillonite Clay to Enhance Asphalt Oxidation Resistance

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