Aplicaciones de Geo-Radar para determinar oquedades en el futuro emplazamiento de las pilas de sostenimiento de un viaducto

Abstract

Ground penetrating radar is usually employed for non-destructive evaluations and maintenance of roads and bridges. This report describe the study of an emlbankmet where a bridge will be built due to the construction of a new road. The geology In this place, where the foundations of the bridge will be emplaced, are formed by hint sands layers between conglomerates ones. Flowing water eroses the sand causing holes and possible landslides, which could be damaging for the bridge. The study of the embakment with aground penetrating radar allows to know the thickness o f the sand layers and the posible holes placed into them. An antenna with center frecuency 100 MHz was used attending the characteristics o f the emplacement. The radar data shows among some other things, the different reflectors due to the conglomerate, the sand layers and their thicknesses. The presence and the emplacement of several holes in the layers are also observed. These results show where the foundations must be properly placed. A comparison with a geological profile was perfomed to assure the results