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Volume 2, No. 3Journal 2

DOI:https://doi.org/10.15517/xrjjr345

Published September 22, 2025

Scientific Papers

  1. Héctor Rioja (Author)

    RP Experimental Method for the Design of Open-Graded Asphalt Mixes

    This work describes the "RP" test, developed in Chile, which, in summary, consists of measuring the resistance to penetration under controlled temperature and speed conditions in open-graded asphalt mix specimens manufactured with varying binder contents. The optimal mix is considered to be the one that exhibits the highest resistance to penetration. The influence of temperature, aggregate characteristics, and type of binder falls outside the scope of this study. The "RP" method is parametric and empirical in nature and is currently in an exploratory stage.

  2. Rodrigo Miró Recasens (Author)

    Procedure for the study and design of cold recycling with emulsion based on the monitoring and analysis of different projects

    The reuse of bituminous materials from worn pavements cannot be considered a new technique in road pavement maintenance and rehabilitation, since its use, in a more or less widespread manner, began in 1973 as a consequence of the oil crisis. In-place cold recycling, as an alternative to conventional milling and replacement, offers a series of well-known technical, economic, and environmental advantages.

  3. Jenny Chaverri (Translator)

    Relationship between the resilient modulus of subbase materials obtained through backcalculation and that measured in the laboratory at the 'Virginia Smart Road test section'

    The 'Virginia Smart Road test section' project provides an excellent opportunity to test various hypotheses regarding pavement performance, material characteristics, and their combinations. The flexible pavement section includes 12 segments of approximately 100 meters in length, which have been thoroughly studied using a complex arrangement of sensors installed beneath the roadway during its construction. During pavement construction, a Falling Weight Deflectometer (FWD) was used to collect deflection data by applying different loads on the pavement surface. In addition, the resilient modulus of the granular subbase material (21-B) was evaluated. The results of the resilient modulus for the subbase layer (21-B) in the 'Virginia Smart Road' indicate that the material modulus is a function of stress, and its behavior can be predicted using a k-θ model. The deflection results from the FWD testing confirm the stress-dependence of the moduli; however, the FWD results show a less pronounced influence of stress state on the moduli. In general, the modulus obtained through backcalculation can be compared with the modulus measured in the laboratory.

Technical papers

  1. Jorge Arturo Castro (Author)

    Environmental preservation during infrastructure construction

    We are all aware of the importance that physical infrastructure works have for a country's development, as they necessarily need to be renewed, expanded, and maintained frequently. But it is also our responsibility to ensure the preservation of the environment, since otherwise it is not feasible to achieve sustainable development or citizen well-being.

  3. Steve Forster (Author)

    Development of a new testing method for hydraulic concrete by the United States Federal Highway Administration (FHWA)

    In the research for new roads, researchers from the United States Federal Highway Administration (FHWA) have developed an accurate method to determine the range within which Portland Cement Concrete (PCC) contracts and expands during temperature changes. The information generated by this new method will play a primary role in the performance of longer-lasting roads with smoother surfaces.

  4. Lee Potter, Mark Eisenhart, Robert Rothwell (Author)

    Restoration of load transfer at transverse joints: 1999 construction period

    The restoration of load transfer at transverse joints is a rigid pavement rehabilitation technique associated with one of the most common types of concrete pavement distress at joints: faulting. In this context, the placement of dowel bars in a pavement without reinforcing steel and with aggregate interlock joints restores the load transfer between adjacent concrete slabs.