Chemical, morphological and rheological characterization of bitumen partially replaced with wood bio-oil: Towards more sustainable materials in road pavements

Ingrassia, Lorenzo Paolo; Lu, Xionggang; Ferrotti, Gilda; Canestrari, Francesco

doi:10.1016/j.jtte.2019.04.003

Cited by 46 publications

(38 citation statements)

References 26 publications

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“…Table 1. Basic characteristics of investigated binders [19]. Furthermore, Figure 1 shows the master curves of the complex shear modulus norm |G * | at a reference temperature of 30 • C in order to have a comprehensive picture of the rheological response of three investigated binder in both unaged and aged conditions.…”

Section: Methodsmentioning

confidence: 99%

“…The main characteristics of the bio-oil as well as the details on the preparation of the bio-binder can be found elsewhere [19]. As the bio-oil addition results in a consistency reduction of the base material [19], a softer plain bitumen (coded as B.115) having a penetration grade similar to that of the bio-binder was also considered for comparison purposes. All three binder samples were investigated in both unaged and long-term aged conditions.…”

Section: Methodsmentioning

confidence: 99%

“…Therefore, one of the main current effort is to move towards "greener" solutions by using renewable or bio-based materials. Despite the chemical and mechanical properties of certain bio-binders having been widely investigated [18][19][20][21], no research works have been focused on the effects of bio-materials on the fatigue and healing properties so far.…”

Section: Introductionmentioning

confidence: 99%

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Analysis of Fatigue and Healing Properties of Conventional Bitumen and Bio-Binder for Road Pavements

Gaudenzi

Cardone

et al. 2020

Materials

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The analysis of fatigue behavior of bituminous binders is a complex issue due to several time-temperature dependent phenomena which interact simultaneously, such as damage accumulation, viscoelasticity, thixotropy, and healing. The present research involves rheological measurements aimed at evaluating the fatigue behavior and compares the self-healing capability of two plain bitumen and a bio-binder obtained by partially replacing one of the plain bitumen with a renewable bio-oil. Healing potential was assessed by means of an experimental approach previously implemented for modified bitumen and bituminous mastic and based on the use of a dynamic shear rheometer (DSR). The effects of some variables such as bitumen type, bio-oil addition, and aging on the healing potential of binders were taken into account. Results showed that the above-mentioned method for healing analysis is also suitable for conventional and bio-add binders. Outcomes of the experimental investigation highlight that fatigue and self-healing are mainly dependent on binder consistency and also affected by aging. Finally, the addition of bio-oil may induce even better performances in terms of healing potential compared to conventional bitumen, especially in aged condition.

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Section: Methodsmentioning

confidence: 99%

Section: Methodsmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

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Analysis of Fatigue and Healing Properties of Conventional Bitumen and Bio-Binder for Road Pavements

Gaudenzi

Cardone

et al. 2020

Materials

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“…The two ACs were produced by using a bio-binder and a plain bitumen, respectively, both at the same binder content of 5.8% (by aggregate weight). The bio-binder was prepared by adding 10% (by weight) bio-oil to a conventional 50/70 penetration grade bitumen through a mixer, setting blending speed at 500 rpm and the temperature at 150 °C for about 10 min [ 22 ]. The percentage of bio-oil has been defined on the basis of various tests performed, including chemical, morphological and rheological as well as conventional and viscosity tests.…”

Section: Materials and Specimen Preparationmentioning

confidence: 99%

“…Since the addition of bio-oil to conventional bitumen causes a consistency reduction [ 22 ], the binder chosen as reference material was a softer plain bitumen, having a similar consistency to the bio-binder. Table 1 summarizes the main properties of both binders [ 20 ].…”

Section: Materials and Specimen Preparationmentioning

confidence: 99%

Performance Assessment of Asphalt Mixture Produced with a Bio-Based Binder

Gaudenzi

Canestrari

et al. 2021

Materials

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Nowadays, the growing energy costs and pressing worldwide demand for petroleum-based products create a strong need to develop alternative binders deriving from green and renewable sources. Bio-binders (or bitumen added to bio-based materials) can potentially be a viable alternative for the production of bituminous mixture, promoting the circular economy as well as environmental sustainability principles without reducing the overall performance of the mixture. In this context, the current study focuses on evaluation of the effects of a bio-binder on the mechanical response of asphalt concrete (AC) produced with it. In particular, a 10% bio-oil deriving from a by-product of the paper industry has been blended with a conventional 50/70 penetration grade bitumen to obtain the bio-binder. Moreover, plain bitumen having the same consistency was chosen to produce a reference AC. Two dense-graded AC wearing courses were prepared in the laboratory according to Italian technical specifications. A mechanical characterization in terms of indirect tensile strength, indirect tensile stiffness modulus, fatigue response and permanent deformation resistance was performed on gyratory compacted specimens using both conventional and performance tests. In addition, aging and water sensitivity of the AC specimens were evaluated. Overall results highlight that the AC produced with the bio-binder did not show reduced mechanical properties and it was comparable to the reference AC regardless of aging and water conditioning. This highly encourages the use of bio-binder as a viable alternative in asphalt technology.

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Performance of bio-asphalts: state of the art review

Mehta,

Saboo

2023

Environ Sci Pollut Res

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Chemical, morphological and rheological characterization of bitumen partially replaced with wood bio-oil: Towards more sustainable materials in road pavements

Cited by 46 publications

References 26 publications

Analysis of Fatigue and Healing Properties of Conventional Bitumen and Bio-Binder for Road Pavements

Analysis of Fatigue and Healing Properties of Conventional Bitumen and Bio-Binder for Road Pavements

Performance Assessment of Asphalt Mixture Produced with a Bio-Based Binder

Performance of bio-asphalts: state of the art review

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