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Volume 15, No. 26Journal 26

DOI:https://doi.org/10.15517/rw80gk32

Published October 29, 2025

Scientific Papers

  1. Augusto Jugo (Author)

    Proposed standard method for the production of storable asphalt mix, for pothole patching and emergency repairs

    The recent development and use of storable plant-produced asphalt mixtures in order to be used in cold patching and other emergency road repairs in Venezuela does not have yet a production and quality control specification. The product has been evaluated by laboratory tests that have not been developed for this type of mixture neither for its use, and this has produced equivocal results, even leading to product rejection. For this reason, a technical specification was developed for the production and control processes of storable asphalt mixtures, as well as a specific procedure proposal in order to properly test the product.

  2. Carlos Roberto Güémez Shedden (Author)

    Dynamic Behavior of Heavy Cargo Vehicles in the County of San José (2011–2012)

    This research adressed some road safety problems related to the motion of heavy vehicles in some places of the San José county, focusing the analisys on some locations of the No.1 and No.39 highways. This was made by relating a qualitative and quantitative analisys of the heavy vehicles' maneuverability with the geometric and topographic characteristics of some selected places, with the traffic accidents, and with the mechanical characteristics of some heavy vehicles. Hence, the posibility of implementing some road safety improvements was identified, improvements that are related to the modification of the design of some roundabouts and access ramp. Besides, it was proved that the heavy vehicle drivers do not have stopping sight distance conflicts on some road segments chosen. Finally a quantitative analisys of the stability of some heavy vehicles  pointed out that, under normal driving conditions, those vehicles should not have stability problems on the horizontal curves were some rollovers occured. 

  3. Fabricio Leiva Villacorta, José Pablo Aguiar Moya, Luis Guillermo Loría Salazar (Author)

    Accelerated pavement testing in Costa Rica

    Accelerated pavement testing equipments such as Heavy Vehicle Simulator (HVS) help evaluate pavement performance in a short period pf time. The objective of this research project is to characterize, improve and introduce new materials and technologies, generate or improve specifications and develop a pavement design guide for Costa Rica. The first experimental test tracks were built at the National Laboratory of Material and Structular Models of University of Costa Rica (LanammeUCR). The results of the first experiment will be used as the standard methodology to apply on future tests. 

  4. Sergio Junior Navarro Hudiel, Ricardo Arauz Bucardo, Luis Guillermo Loría Salazar (Author)

    Nicaraguan experience in the implementation of tests for the determination of the type of asphalt cement by performance grade superpave

    The main purpose of this research was to determine the type of asphalt required for performance grade (Superpave PG) for Nicaragua's road network. According to that, the performance grade of asphalt cement type AC-30, typically used, was determined. Also, statistical analysis of high and intermediate air temperatures were conducted to be correlated with surface temperature and be reflected in maps of performance degrees required for asphalt cement in the country. A performance degree of PG 64 - (25) was obtained, which is appropriate for the whole country, because it meets the pavement temperature range represented in the zoning maps of asphalt cement considering the high and intermediate temperatures.