Highway trial sections: Performance evaluation of warm mix asphalt and recycled warm mix asphalt

Valdés-Vidal, Gonzalo; Calabi-Floody, Alejandra; Sánchez-Alonso, Elsa; Díaz, César García; Fonseca, C.

doi:10.1016/j.conbuildmat.2020.120069

Cited by 11 publications

(9 citation statements)

References 23 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…In any case, previous results show that the use of zeolite would improve the mechanical performance and durability of the pavements. For example, in the study of Valdés-Vidal et al (2020) [22] and also in this study (Figure 6), it was shown that the different asphalt mixtures evaluated give the pavement a similar structural capacity (modulus of rigidity and resistance to cracking), which indicates that they have equivalent service life.…”

Section: Discussionsupporting

confidence: 73%

“…RAP is the material milled from urban highways located in Santiago de Chile. This material is collected, homogenized, and classified by the production plant for use in asphalt mixtures [22].…”

Section: Goal and Scopementioning

confidence: 99%

“…The mentioned temperatures correspond to the optimum mixture temperature according to the Marshall design method (154 • C), and the reduced temperatures (144 and 134 • C) are those according to the design protocol for mixtures with greater energy efficiency and low environmental impact, determined from the technology of using natural zeolite as the additive to produce WMA. Details can be found in [22]. It may be noted here that the inputs and outputs related to direct and indirect transport for the manufacture of the asphalt mix were also quantified.…”

Section: Life Cycle Inventorymentioning

confidence: 99%

“…In this study, the environmental impacts of different types of asphalt mixes designed for the same performance were compared by using a conventional standard mix and verifying their performance over time using a test section on a real urban highway. It is important to indicate that all the design parameters and the mechanical performance of the asphalt mixtures evaluated in this study are available in the published results of a previous study [22].…”

Section: Introductionmentioning

confidence: 99%

See 3 more Smart Citations

Life Cycle Assessment of Natural Zeolite-Based Warm Mix Asphalt and Reclaimed Asphalt Pavement

et al. 2023

View full text Add to dashboard Cite

Today, an important part of paved surfaces in the world uses asphalt mixtures. This practice increases the use of aggregates and fossil fuels, the availability of which is limited. Most of the studies referring to asphalt mixtures reported and compared the mechanical performances without detailing the environmental impacts of the different technologies proposed. The objective of this study was to present and compare through a life cycle assessment using a “cradle-to-gate” approach of different types of asphalt mixtures designed for the same performance, hot mix asphalt (HMA) as a control sample, and warm mix asphalt (WMA) using natural zeolite, Evotherm® and reclaimed asphalt material (RAP) in different proportions. The analysis was performed using SimaPro 9 software, using the ReCiPe method version 1.11. For the comparison of the environmental impacts, 1 ton of asphalt mixture was used as a functional unit. The most relevant results show that the use of natural zeolite or Evotherm® helps to reduce environmental impacts. In the global warming impact category, the decrease between the standard HMA and a mix with RAP and natural zeolite was 8%, while in the fossil fuel depletion, the decrease was 13%.

show abstract

Section: Discussionsupporting

confidence: 73%

Section: Goal and Scopementioning

confidence: 99%

Section: Life Cycle Inventorymentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

See 2 more Smart Citations

Life Cycle Assessment of Natural Zeolite-Based Warm Mix Asphalt and Reclaimed Asphalt Pavement

et al. 2023

View full text Add to dashboard Cite

show abstract

“…Rubber from end-of-life tires (ELTs) has already been used for many years in pavement solutions and in the construction industry [1][2][3][4][5][6][7][8][9]. Nowadays, it is used particularly in asphalt applications to produce asphalt-rubber or rubberized asphalt to make pavements more durable and resilient.…”

Section: Introductionmentioning

confidence: 99%

Life Cycle Assessment of Innovative Asphalt Mixtures Made with Crumb Rubber for Impact-Absorbing Pavements

et al. 2022

View full text Add to dashboard Cite

This study applies the life cycle assessment methodology to evaluate the environmental impacts of shock-absorbing pavements fabricated with recycled materials (crumb rubber and a colored pigment called ferrotone), employing the “cradle-to-grave” approach, in which the impacts of all life cycle phases (from materials’ acquisition to the end-of-life of the pavement) are included. The analysis compares the impacts of standard and innovative asphalt materials, considering cold and hot production processes. In addition, three different lifespans are simulated for the pavement structures: the reference service life until the first intervention is considered to be 5 years, and the following scenarios consider that the alternative asphalt materials may last 20% less (4 years) or 20% longer (6 years) than the reference service life. The analysis uses non-renewable cumulative energy demand (nr-CED) and global warming potential (GWP) as main indicators to determine the environmental impacts over a 45-year analysis period. The results show that adopting the “dry process” (consisting of adding the rubber as a partial substitution for aggregates) increases the overall impacts due to the need for higher contents of binder. However, if the alternative pavement structures last 20% longer than the reference, they would generate lower impacts in terms of nr-CED and GWP.

show abstract

Reactive molecular dynamic investigation of the oxidative aging impact on asphalt

Yang

Wang

Cao

et al. 2021

Construction and Building Materials

View full text Add to dashboard Cite

Highway trial sections: Performance evaluation of warm mix asphalt and recycled warm mix asphalt

Cited by 11 publications

References 23 publications

Life Cycle Assessment of Natural Zeolite-Based Warm Mix Asphalt and Reclaimed Asphalt Pavement

Life Cycle Assessment of Natural Zeolite-Based Warm Mix Asphalt and Reclaimed Asphalt Pavement

Life Cycle Assessment of Innovative Asphalt Mixtures Made with Crumb Rubber for Impact-Absorbing Pavements

Reactive molecular dynamic investigation of the oxidative aging impact on asphalt

Contact Info

Product

Resources

About