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Volume 16, No. 27Journal 27

DOI:https://doi.org/10.15517/88wg4t12

Published October 30, 2025

Scientific Papers

  1. Julian Rivera, Natalia Alderete, Martín Villanueva (Author)

    Structural urban road design by AASHTO93 backcalculation based in the use of a light weight deflectometer

    One of the uses of a Falling Weight Deflectomer is to determine the overlay thickness throughout backcalculation according to the AASHTO93 guide, which is widely used. This is achieved by the generation of deflections on the old asphalt layer, allowing different asphalt layer thickness in each a part of a road.

    An analog application to determine the asphalt layer thickness is predictable if the deflection is caused above the base, regarding this there has been several successful experiences worldwide. This application could be helpful in urban street paving given the heterogeneity of the subgrade, the materials, the compaction process, etcetera. However, the FWD is a high cost device and this makes it difficult to apply, especially because some paving works are not large enough to afford it.

    Recently similar devices have appeared in the region which could be a reasonable alternative, such as the Light Weight Deflectometer. The LEMaC, Road Investigation Center from the National Technological University of La Plata (Buenos Aires – Argentina), has made an anlysis regarding the described situation.

    At the international level, various initiatives have been developed but they all arrive at a correlation constant, which according to the elastic layer theory would not be recommended. Models of correlation should be developed instead.

    A research project was developed in the LEMaC, in order to obtain those correlation models. This was done through the use of LWD carried out on road test surfaces and laboratory tests, which are presented with their determination coefficients.

  2. Armando Martínez Santiago, René Cruz López, Héctor Daniel Reséndiz López, Luis Chías Becerril (Author)

    Locational analysis of quarries for the spatial planning of infrastructure: the case of the paved highway network of Veracruz State, Mexico

    The aim of the present work is to highlight the importance of territorial planning in the sustainable use of the raw material deposits located in the state of Veracruz, ranking first at the national level according to the National Inventory of Raw Material Deposits (NIRMD) 2011/2012 of the Secretariat of Communications and Transport (SCT). Raw material deposits are geological deposits of materials essential for the construction, maintenance and modernization of the basic infrastructure -communications and transport, electrical and hydraulic infrastructures-,social infrastructure–facilities to supply services and housing infrastructure-, and productive infrastructure –works aimed at the production and marketing of goods and services.

  3. Andres, Karen Eugenia Chalco Condorhuamán (Author)

    Traffic impact analysis of the Santa Rosa tunnel on Proceres de la Independencia Ave., SJL, Lima

    The following paper is the summary of a research project studying the influence of several transportation infrastructure projects in the traffic conditions of the intersection of Av. Perú and Av. Próceres de la Independencia, located in the district of San Juan de Lurigancho (SJL), Lima, Perú. Thus, the paper provides the presentation of the study problem, considering the conditions and characteristics of the studied intersections; description of the vehicular flow, composed of traffic counts collected for the traffic study of the Santa Rosa – San Martín Interconection Tunnel project; and analysis of the current and future conditions, as well as the solution formulation. Therefore, the main objective of this work is to analyze the influence of the construction and opening of the transportation infrastructure projects in the traffic conditions, current and future, of the intersection of Av. Peru with Av. Próceres de la Independencia to evaluate its levels of service applying the HCM methodology. Lastly, it is important to mention that this work becomes one of the first attempts taken by some professionals in the country to retake this area of civil engineering, and start proposing the formulation of Traffic Impact Analysis (TIA) of high technical level that, within the appropriate conditions, may provide a future solution to the current uncontrolled and unplanned growth of the city of Lima (and other cities in the provinces)

  4. Mónica Vega Quirós (Author)

    Granular subbase resistance variation with the variation of plastic fines content in controlled gradations

    Pavement road surfaces wear down due to loading and weather conditions; lower layers (base, subbase and subgrade) conditions and characteristics also influence the structure performance. Influence of plastic fines content may also affect pavement structure deformability and should be a factor to take into account on base and subbase layers. This work quantifies the resistance variation of a subbase material, to propose a potentially feasible range of fine particles content usable in pavement designs.

    Determination of resistance were obtained by California Bearing Ratio (CBR) and Resilient Modulus laboratory tests, comparing different gradation subbases according to type of fines (plastic or non-plastic) and content of fines (4% - 12%). On subbases with plastic fines, effectiveness of lime as a stabilization additive was evaluated.

    Obtained results show that in cases when plastic fine particles in subbases are substituted by non-plastic fines, resistance is increased. Furthermore, when subbase plastic fines content is high, stabilization with lime produce a positive effect on increasing material's resistance. 

Opinion Papers

  1. Pedro Pontaque García (Author)

    Intelligent transportation systems: Why not?

    Installation of Intelligent Transportation Systems on Route 27 revolutionized transport infrastructure in Costa Rica.

    For the first time such systems were installed in a Costa Rican path as integral equipment, that collect and provide information 24 hours a day, 365 days a year.

    At Route 27 is installed a fiber optic network, that connects all elements of the system such as mobile cameras that are used to determine the state of the road,dynamic message signs to deliver information to users, data capture stations that not only count vehicles but that measure speed, detect congestion and generate alerts if vehicles travel in opposite direction.

    The installation was mainly for functional reasons as the concessionaire is responsible for the road so wants to know what happens to manage and plan events in the best way possible with the lower cost.

    The extension of these technologies used by the concessionaire to others projects in the country would contribute to show the real benefits of the concession system, that has not only invest and built the project itself but also bring new procedures and technologies to the country that makes this more efficient, productive and give a bigger quality of live to citizens.