BR 287 Duplication Designed through the Methods of DNIT and MeDiNa (2020): Structural and Financial Analysis

Pascoal, Paula Taiane; Chiarello, Gabriéli Pires; Baroni, Magnos; Pereira, Deividi da Silva; Zucchi, Fernando Luiz

doi:10.11137/1982-3908_2022_45_44094

Cited by 3 publications

(1 citation statement)

References 2 publications

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“…As a second comparative point, we define one square meter of pavements for each mix as functional units, taking into consideration the mechanical and performance parameters under the National Design Methodology (MeDiNa) [22], a Brazilian methodology. It implements a mechanistic-empiric pavement design methodology and validation based on elastic multi-layer analysis.…”

Section: Functional Unitsmentioning

confidence: 99%

Environmental Impact Comparison Analysis between a Traditional Hot Mixed Asphalt (HMA) and with the Addition of Recycled Post-Consumer Polyethylene Terephthalate (RPET) through the Life Cycle Assessment (LCA) Methodology

Osorto

Casagrande

2023

Sustainability

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The present study presents a cradle-to-built life cycle assessment (LCA) for a road pavements structure of hot mixed asphalt (HMA) with recycled post-consumer polyethylene terephthalate (RPET) addition through the “dry” process using a comparison analysis between declared units equivalent of 1 ton of produced mix and functional units equivalent of 1 m2 pavement variants under the Brazilian “National Design Methodology” (MeDiNa), in contrast with a conventional mix variant. The Tool TRACI 2.0 for reducing and assessing chemical and other environmental impacts was applied for each alternative, assessing the impacts into categories such as acidification, eutrophication, freshwater ecotoxicity, global warming potential, human health, ozone depletion, and smog formation. The life-cycle impact assessment results were interpreted through an internal normalization criteria and weighting rule, obtaining an environmental score for each alternative and allowing an easy stakeholder interpretation. Considering the better mechanical properties and overall functional performance of the HMA + RPET mixes, the functional unit comparison on LCA methodology results in savings in all environmental impact categories for each square meter of pavement constructed and ready to use. For the functional units, the HMA + RPET pavement structures (FU 2 and FU 3) resulted in lower environmental scores (ES) with 49.2 and 47.1, respectively, representing a difference of 26.9 and 29 score points in comparison to the conventional pavement structure (FU 1 − C), with an ES of 76.1. It represents 38% of environmental savings in terms of the environmental score in favor of sustainable pavement alternatives. Focusing on the impact in global warming potential, the use of RPET in the HMA mixes for pavement design can result in savings up to 47.44% of impact decrease (20.4 ES) in comparison with the conventional-mix pavement structure proposal. This result supports the environmental sustainability of the HMA + RPET mixes and is a precedent for future research on new geotechnical and pavement alternative materials.

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Section: Functional Unitsmentioning

confidence: 99%

Environmental Impact Comparison Analysis between a Traditional Hot Mixed Asphalt (HMA) and with the Addition of Recycled Post-Consumer Polyethylene Terephthalate (RPET) through the Life Cycle Assessment (LCA) Methodology

Osorto

Casagrande

2023

Sustainability

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MeDiNa Pavement Design Methodology Applied to Portuguese Pavement Structures

Callai,

Ferreira

2024

Lecture Notes in Civil Engineering

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National Pavement Design Method (MeDiNa) applied to rehabilitation and restoration: a literature review

Liz,

Barra,

Mikowski

et al. 2024

Cad. Pedagógico

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The poor condition of Brazilian highways is primarily attributed to traffic exceeding the designed capacity, overloading, and the use of an empirical design method from the 1960s. Pavement rehabilitation or restoration designs are generally carried out using outdated standards (DNER PRO 11/79 and DNER PRO 269/94). In response to this situation, the National Pavement Design Method (MeDiNa) emerged, which is a software accompanied by two other calculation routines and uses the mechanistic-empirical concept. This paper aims, based on a literature review, to evaluate the Brazilian scientific approach to pavement restoration/rehabilitation using the MeDiNa method. Through a systematic search in a database, a low number of papers that used the method was identified, and only 20 % of these articles performed reinforcement calculations, which does not align with the demand and defects presented in the Brazilian road network. Additionally, emerging trends on the topic were outlined through a bibliometric analysis. Furthermore, syntheses of the papers on rehabilitation or restoration found in the systematic search, as well as those from complementary literature, were conducted to situate the reader concerning the issue. Finally, points for improvement and the need for further research were identified, such as the investigation of results from backanalysis and interlayer bonding. The conclusion is that MeDiNa, still in the implementation phase, has great scientific potential to be explored, which will help validate this method.

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BR 287 Duplication Designed through the Methods of DNIT and MeDiNa (2020): Structural and Financial Analysis

Cited by 3 publications

References 2 publications

Environmental Impact Comparison Analysis between a Traditional Hot Mixed Asphalt (HMA) and with the Addition of Recycled Post-Consumer Polyethylene Terephthalate (RPET) through the Life Cycle Assessment (LCA) Methodology

Environmental Impact Comparison Analysis between a Traditional Hot Mixed Asphalt (HMA) and with the Addition of Recycled Post-Consumer Polyethylene Terephthalate (RPET) through the Life Cycle Assessment (LCA) Methodology

MeDiNa Pavement Design Methodology Applied to Portuguese Pavement Structures

National Pavement Design Method (MeDiNa) applied to rehabilitation and restoration: a literature review

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