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Volume 23, No. 41Journal 41, February-June 2021

DOI:https://doi.org/10.15517/7djjzt49

Published November 18, 2025

Scientific Papers

  1. Gabriel Rojas Rojas, Eliécer Arias Barrantes, José Pablo Aguiar Moya, Alejandra Baldi (Author)

    Asphalt modiification with red grape pomace as an antioxidant material

    This study evaluated the antioxidant properties of red grape pomace and its benefits as an additive for asphalt binder. The samples were modified using red grape pomace as an antioxidant agent in concentrations of 1%, 2% and 3%. These samples were left outdoors to undergo natural oxidation for 12 weeks. Another set of samples were aged in an ultraviolet radiation (UV) chamber to compare the results between both oxidation methods. Three functional groups were taken in consideration to measure the degree of oxidation: the carbonyl, the carbon-carbon double bond and the sulfoxide indexes. The asphalt modified with 3% red grape pomace had the lowest increase in carbonyl index, showing that the additive works as an agent to delay the oxidation process in asphalt. The indexes obtained for the field aged samples were significantly larger than the ones associated to the UV chamber, consequently aging in a UV chamber did not properly emulate environmental conditions. Further research analyzing higher percentages of red grape pomace (greater than 3%) to understand the effect of larger contents of additive is recommended.

  2. Melissa Karina Mora Valverde, Mónica Jiménez Acuña, José Pablo Aguiar Moya, Wendy Sequeira Rojas (Author)

    Analysis of the variability associated with fatigue tests in asphalt mixes

    This research paper synthesizes the analysis of the variability associated with fatigue tests on three types of hot asphalt mixtures and produced in plants in Costa Rica. The tests studied were: overlay (Tex-248-F), semi-circular curve test (SCB, ASTM D8044-16) and the beam test subjected to 4 point bending
    (AASHTO T321-17). These tests present a lot of variability in the results, which causes the analysis of the results could be questioned. It should be considered that the fatigue analysis in asphalt mixtures for highways in Costa Rica is regulated by the General Specifications Manual for the Construction of Highways, Roads and Bridges of Costa Rica (CR-2010) of the Ministry of Public Works and Transport (MOPT, by its acronym in Spanish), and that it is based on the Superpave
    methodology and the AASHTO T 321 test. Therefore, the work was developed to generate inputs to evaluate different tests and their applicability in the design and construction processes of Costa Rica highways. This could allow redefining national specifications on this topic, in the future. The study required a collection of bibliographic information, an experimental phase, which included the characterization of the materials and specimens, and fatigue tests. Then, the analysis of the variability of the results was carried out, looking forward to sensitivity factors, trends in the behavior of mixtures, as well as advantages and disadvantages of the methods. It was verified that the variability depends on different factors to a greater extent on the properties of the mixture. Finally, it was identified that the most variable test was the four-point bending-traction beam test and the semi-circular test required the least time and effort compared to the other tests.

Literature Review

  1. Luz Magali Hoyos Díaz, Sócrates Pedro Muñoz Pérez, Katyuska del Carmen Puicon Herrera (Author)

    Use of granulated rubber in asphalt mixtures: A literary review

    Millions of tons of discarded tires are produced each year, presenting a serious environmental problem. Due to this, granulated rubber (CR) is currently being used in the design of asphalt mixtures, since they provide fundamental properties in it, such as durability and resistance. In this research, different articles were analyzed with the aim of deciphering the processes and methods used with the use of CR, identifying the optimal percentages and the improvement it provides in asphalt mixtures. It was found that the optimum percentages of CR in the asphalt mixtures vary in a range of 1% -20% by weight of the total mixture. Likewise, using CR provides different benefits to the mixture such as: resistance to indirect traction, susceptibility, humidity, grooving, permeability, and aging; increases the useful life of the mixtures to fatigue; and reduces noise. Fifty articles indexed in the Scopus database between 2006 and 2020 were reviewed on the use of CR in asphalt mixtures, moisture damage, resistance to furrow formation, resistance to fatigue and resistance to low temperature.

Erratum

  1. Revista Infraestructura Vial (Author)

    Erratum

    Valid for documents downloaded or accessed before July 17th, 2020.

    The editorial team of Infraestructura Vial has detected an involuntary error in the information found in its website related to the copyright in published articles, regarding which we clarify that the authors are the copyright holders of all their publications in our journal. The information has already been corrected on the website of Infraestructura Vial. The articles for which this erratum is valid are listed in the document.