Estimation of the AASHTO structural layer coefficient by FWD for the concrete pavement Rubblizing. A case study in the District of San Felix, Panama.

En la actualidad, la correcta elección de metodologías de rehabilitación de pavimentos se convierte en un tema que implica dedicación y estudio, debido al aumento en la ocurrencia de patologías en los pavimentos existentes. Se requiere implementar metodologías que permitan procesos de rehabilitación que resuelvan integralmente las debilidades estructurales y funcionales del pavimento y de esta manera, provean nuevamente de vida útil la estructura de pavimento. El presente trabajo pretende socializar la técnica de rehabilitación de pavimentos en concreto hidráulico Rubblizing, la cual consiste en triturar y pulverizar la losa de concreto existente para convertir esta en una capa de base granular de alto modulo. A su vez presenta resultados de la evaluación estructural mediante FWD para un tramo en estudio, en términos de coeficiente de aporte estructural según la metodología AASHTO 1993.Currently, the correct choice of pavement rehabilitation methodologies becomes an issue that involves dedication and study, due to the increase in the occurrence of diseases in existing pavements. Required to implement methodologies for rehabilitation processes that fully solve the structural and functional pavement weaknesses and thus, provide service life again the pavement structure. This paper aims to socialize pavement rehabilitation technique Rubblizing, which consists of f the existing concrete slab to turn this into a high modulus granular base. In turn presents results for structural evaluation by FWD for a real project, in terms of AASHTO 1993 structural coefficien

University effects on regional innovation

This paper analyzes empirically whether expansion of a university system affects local industry innovation. We examine how the opening of new university schools in Italy during 1985–2000 affected regional innovation. We find that creation of new schools increased regional innovation activity already within five years. On average, an opening of a new school has led to a seven percent change in the number of patents filed by regional firms. The evidence suggests that the effect is mainly generated by high quality scientific research brought to the region with new schools.Peer Reviewe