Asphalt nanocomposite with titanium dioxide: Mechanical, rheological and photoactivity performance

Cadorin, Natália Dell'Antonio; Melo, João Victor Staub de; Broering, Wellington Borba; Manfro, Alexandre Luiz; Barra, Breno Salgado

doi:10.1016/j.conbuildmat.2021.123178

Cited by 20 publications

(3 citation statements)

References 56 publications

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“…Most of the research concerning pavements functionalization was devoted to the impact evaluation of the processes under the mechanical and rheological points of view [12][13][14], dope the semiconductor nanoparticles or combination with other materials to increase the photocatalytic efficiency [15,16], analyze the anti-aging effects [13,17], monitor the air quality and quantify the degradation of gases in real scale [18,19], and evaluate the NO x depolluting performance by computational simulation [20].…”

Section: Introductionmentioning

confidence: 99%

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Functionalization of Smart Recycled Asphalt Mixtures: A Sustainability Scientific and Pedagogical Approach

et al. 2022

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The sustainable development of our societies demands strong efforts on scientific and technological research while informing and educating students and the general population. Air pollution and road safety hazards constitute two main public health problems that are insufficiently addressed pedagogically. With this work, we aim to contribute to tackeling the problem by presenting the results of scientific research on the development of photocatalytic, superhydrophobic, and self-cleaning recycled asphalt mixtures to achieve an eco-social friendly and smart material able to mitigate socioenvironmental impacts. The functionalization of asphalt is implemented by spraying particles’ solutions over a conventional AC 10, then evaluated by dye degradation and wettability. Firstly, different particles’ solutions (with nano-TiO2 and/or micro-PTFE under water, ethyl alcohol, and dimethyl ketone) were sprayed to select the best solution (BS), which was composed of TiO2-PTFE (4 g/L each) in ethyl alcohol. Two successive spraying coatings (diluted epoxy resin and BS) were performed over conventional and recycled AC 10 (with reclaimed asphalt pavement and steel slags). Their efficiency decreases with the highest resin amounts. The best results were obtained with 0.25 g resin and BS. For the lowest resin amount, all mixtures achieved superhydrophobicity and performed similarly regarding wettability.

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Section: Introductionmentioning

confidence: 99%

“…The photocatalytic efficiency is lower on asphalt mixtures (functionalized by asphalt binder modification) than on cement matrix materials (functionalized by bulk incorporation) due to encapsulation of the nanoparticles by the asphalt binder. In addition, nano-TiO 2 increases the fatigue and aging resistances of asphalt binders [12].…”

Section: Introductionmentioning

confidence: 99%

Functionalization of Smart Recycled Asphalt Mixtures: A Sustainability Scientific and Pedagogical Approach

et al. 2022

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“…Moreover, it is a theme of research whether RAP including polymer-modified bitumen is as recyclable as the RAP containing neat bitumen, in terms of final mix performance and emission during mix production [14,15]. Another technique to increase the bitumen performance, which is actually investigated in terms of aging behavior, deals with the use of nanomaterials as modifiers, such as fumed silica, clay, diatomite, titanium dioxide, graphene, and carbon nanotubes [16][17][18][19][20][21][22]. However, there are still some gaps of knowledge on the understanding of neat-bitumen-aging phenomena, particularly from a chemical point of view.…”

Section: Introductionmentioning

confidence: 99%

A Review on Bitumen Aging and Rejuvenation Chemistry: Processes, Materials and Analyses

Prosperi

Bocci

2021

Sustainability

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During the last decades, extensive research has been carried out on using reclaimed asphalt pavement (RAP) material in the production of hot recycled mix asphalt. Unfortunately, the aged, stiff, and brittle binder in the RAP typically increases the mixture stiffness and can therefore cause fatigue and low-temperature damages. In the scientific literature, there are many studies concerning the aging and rejuvenation of bitumen, but there is a lack of up-to-date reviews that bring them together, especially those facing the phenomena from a chemical point of view. In this paper, a recap of the chemical aspects of virgin, aged, and rejuvenated bitumen is proposed in order to provide a useful summary of the state of the art, with the aim of both encouraging the use of an increasing quantity of RAP in hot mix asphalt and trying to give indications for further research.

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Toward sustainable roads: a critical review on nano-TiO2 application in asphalt pavement

Ayar,

Ruhi,

Baibordy

et al. 2024

Innov. Infrastruct. Solut.

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Asphalt nanocomposite with titanium dioxide: Mechanical, rheological and photoactivity performance

Cited by 20 publications

References 56 publications

Functionalization of Smart Recycled Asphalt Mixtures: A Sustainability Scientific and Pedagogical Approach

Functionalization of Smart Recycled Asphalt Mixtures: A Sustainability Scientific and Pedagogical Approach

A Review on Bitumen Aging and Rejuvenation Chemistry: Processes, Materials and Analyses

Toward sustainable roads: a critical review on nano-TiO2 application in asphalt pavement

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