

The paper presents the results obtained by the application of recycling rigid pavements through Rubblizing technique by resonant vibration, with no precedent in Argentina. This methodology, was used in National Route N° A008 (Rosario City Bypass) in Santa Fe Province during the period 2010–2013. It consists on fracturing the slab into angular interlocking pieces by using a resonant pavement breaker machine which transmits a dynamic load of low amplitude and high frequency, generating a granular layer of high Modulus. Main advantages of rubblizing technique, among others, are the resulting layer of homogeneous structural response and the daily high performance execution with no damage in the sub base layer. In this urban roadway, two representative experimental sections were adopted for further studies. Those studies were divided in two geotechnical campaigns: the first aimed to characterize the bearing capacity of the subgrade and sub base soil cement by DCP tests, laces and pits. The second one used Falling Weight Deflectometer (FWD) equipment on each structural reinforcement performed on the fractured layer to obtain the structural coefficient of the granular layer. It should be noted that for the structural design of the flexible pavement layers it was adopted a structural coefficient of 0.098 1/cm ai taking as antecedent the results obtained in the experience carried out on the Del Sol Roadway, New Access to the Port of San Antonio, Chile. The values obtained in the present work were satisfactory and confirm those adopted for the project. Both the site evaluation and the in situ behaviour of structural layers were also satisfactory. Although in some sections the annual average daily traffic exceeds 40,000 vehicles, there were no structural problems verified.