Performance evaluation of warm mix asphalt involving natural zeolite and reclaimed asphalt pavement (RAP) for sustainable pavement construction

Valdés-Vidal, Gonzalo; Calabi-Floody, Alejandra; Sánchez-Alonso, Elsa

doi:10.1016/j.conbuildmat.2018.04.149

Cited by 43 publications

(21 citation statements)

References 23 publications

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“…Road infrastructures account for approximately 22%, 28%, and 63% of global carbon dioxide emissions, world energy consumption, and total transportation sector-related greenhouse gas emissions, respectively 3 . In comparison to conventional hot mix asphalt technology, the warm mix asphalt (WMA) technology enables asphalt mix production at temperatures of approximately 50 °C lower, and hence, it is an up-to-date solution for reducing energy consumption by 35%, greenhouse gas emissions by 20 to 35%, and harmful vapors such as polycyclic aromatic hydrocarbons significantly 4 , 5 .…”

Section: Introductionmentioning

confidence: 99%

Rheological, physicochemical, and microstructural properties of asphalt binder modified by fumed silica nanoparticles

Cheraghian

Wistuba

Kiani

et al. 2021

Sci Rep

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Warm mix asphalt (WMA) is gaining increased attention in the asphalt paving industry as an eco-friendly and sustainable technology. WMA technologies are favorable in producing asphalt mixtures at temperatures 20–60 °C lower in comparison to conventional hot mix asphalt. This saves non-renewable fossil fuels, reduces energy consumption, and minimizes vapors and greenhouse gas emissions in the production, placement and conservation processes of asphalt mixtures. At the same time, this temperature reduction must not reduce the performance of asphalt pavements in-field. Low aging resistance, high moisture susceptibility, and low durability are generally seen as substantial drawbacks of WMA, which can lead to inferior pavement performance, and increased maintenance costs. This is partly due to the fact that low production temperature may increase the amount of water molecules trapped in the asphalt mixture. As a potential remedy, here we use fumed silica nanoparticles (FSN) have shown excellent potential in enhancing moisture and aging susceptibility of asphalt binders. In this study, asphalt binder modification by means of FSN was investigated, considering the effects of short-term and long-term aging on the rheological, thermal, and microstructural binder properties. This research paves the way for optimizing WMA by nanoparticles to present enhanced green asphalt technology.

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Section: Introductionmentioning

confidence: 99%

Rheological, physicochemical, and microstructural properties of asphalt binder modified by fumed silica nanoparticles

Cheraghian

Wistuba

Kiani

et al. 2021

Sci Rep

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“…Por meio de pesquisas nos paıśes europeus, asiáticos e norte-americanos (HUANG et al, 2005;MOGAWER et al, 2011;SHIRODKAR et al, 2011;GUO et al, 2014;LIZA= RRAGA et al, 2018;SONG et al, 2018), assim como em trabalhos já desenvolvidos na américa latina (VALDES-VIDAL et al, 2018) e, especi+icamente, no Brasil (OLIVEIRA, 2013ZUBARAN, 2014;GENNESSEAUX, 2015), pode-se perceber que a implementação dessas misturas traz inúmeros ganhos, tanto para o meio ambiente, quanto para empreiteiras e trabalhadores desse setor, mostrando resultados promissores e satisfatórios.…”

Section: Transportes | Issn: 2237-1346unclassified

Avaliação de misturas asfálticas recicladas mornas com uso de ligantes convencional e modificado por polímero

Bohn¹,

Specht²,

Brondani³

et al. 2020

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Com o objetivo de avaliar tecnologias e práticas mais sustentáveis para a área de pavimentação, estudou-se o comportamento de misturas asfálticas recicladas mornas, utilizando ligantes convencional CAP 50/70 e modificado por polímero CAM 60/85-E. Foram ensaiadas quatro misturas asfálticas por ligante: convencional à quente, morna (sem RAP) e morna com 25% e 50% de RAP (em substituição à massa total de agregados virgens). As amostras foram dosadas pela metodologia Superpave e avaliadas quanto às propriedades de resistência, deformabilidade, adesão e coesão. As misturas mornas e convencionais apresentaram comportamento equivalente e o uso de ligante modificado elevou o desempenho das amostras. Houve uma melhora significativa nas propriedades das misturas com o uso de RAP, ressaltando-se o expressivo aumento de Flow Number e os resultados positivos de adesão e coesão, provavelmente, em decorrência do RAP apresentar ligante residual modificado com polímero.

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“…A great number of laboratory studies have been conducted to determine the appropriate RAP content and its impact on the performance of asphalt pavements [1][2][3]. The drawbacks of RAP can also be modified to some extent by rejuvenators to achieve a better workability, moisture susceptibility, fatigue and rutting performances in HMA or even WMA products [4][5][6][7][8][9][10][11]. Yu et al [12] evaluated the performance of WMA mixtures by adding 0%, 20%, 40%, 60% or 80% RAP to mixtures.…”

Section: Introductionmentioning

confidence: 99%

WMA Overlay Optimization Based on the LTPP Database: Using the RSM Method

et al. 2022

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This study investigates the field performance of Warm Mix Asphalt (WMA) road overlays containing various amounts of RAP and binder. Rutting, the International Roughness Index (IRI), and transverse, longitudinal and alligator cracking are the key parameters considered here. Our research is based on a Specific Pavement Study-10 experiment (SPS-10) conducted in nine states of North America (eight in the USA and one in Canada) that included 31 road sections in dry and wet regions. Road overlays were evaluated 1 and 4 years after their placement in terms of anti-cracking behavior and were compared with the pre-treatment status of the road. The best rutting resistance occurred at 15% and 12% RAP in dry and wet regions, respectively. For IRI, 30% and 0.0% RAP were the best for dry and wet regions as well. The maximum longitudinal crack recovery rates were found at site 3 (BA01, Arizona; dry region) and site 26 (AA65, Missouri; wet region), with RAP contents of 20% and 36%, respectively. In addition, alligator cracking did not occur post-overlay, so optimal RAP and binder contents cannot be suggested. The greatest improvements were found at site 15 (AA01, Washington state; dry) and site 30 (AA63, Oklahoma; wet). The response surface method (RSM) was also developed to explore the optimal models for RAP and selection of binder contents to minimize the rutting, IRI, and transverse and longitudinal crack lengths.

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Performance evaluation of warm mix asphalt involving natural zeolite and reclaimed asphalt pavement (RAP) for sustainable pavement construction

Cited by 43 publications

References 23 publications

Rheological, physicochemical, and microstructural properties of asphalt binder modified by fumed silica nanoparticles

Rheological, physicochemical, and microstructural properties of asphalt binder modified by fumed silica nanoparticles

Avaliação de misturas asfálticas recicladas mornas com uso de ligantes convencional e modificado por polímero

WMA Overlay Optimization Based on the LTPP Database: Using the RSM Method

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