Estudio de riegos bituminosos de adherencia para rehabilitación de firmes flexibles fresados
Date
2021
Authors
Journal Title
Journal ISSN
Volume Title
Publisher
Abstract
En rehabilitaciones con capas bituminosas, se aplica un riego de adherencia como interfase. Si previamente se fresa superficialmente se modifica la textura incidiendo en su dotación; dado un incremento de superficie de interfase que requeriría mayores tasas y formación de surcos que producirían escurrimiento del riego, limitándolas. Es necesaria una solución de compromiso mecánicamente óptima. En su estudio se aplica un procedimiento para elaborar especímenes y ensayarlos; estableciéndose las dotaciones por proporcionalidades respecto del incremento de la superficie de la interfase debido al fresado. Para ello se desarrolla un modelo para estimar ese incremento mediante una adaptación del Ensayo de Parche de Arena. Se estima con ensayos estáticos la dotación óptima en términos del incremento de superficie, arribándose a un modelo de aplicación en campo asociado. La investigación se realiza sobre materiales de Argentina. Como validación se realiza el análisis a fatiga y aplicaciones en obra en Argentina y España.
In rehabilitations with asphalt layers, a tack coat is applied as an interface. If it is previously milled superficially, the texture is modified, affecting its dosage; given an increase in interface surface that would require higher dosages and formation of grooves that would produce runoff of bitumen emulsion, limiting them. A mechanically optimal compromise solution is necessary. In its study, a procedure is applied to elaborate specimens and to test them; establishing the dosages by proportionalities concerning the increase in the surface of the interface due to milling. For this, a model is developed to estimate this increase through an adaptation of the Sand Patch Test. The optimal dosage in terms of the increase in surface area is estimated with static tests, arriving at a field application model associated. The research is carried out on materials from Argentina. As validation, fatigue analysis, and on-site applications are carried out in Argentina and Spain.
In rehabilitations with asphalt layers, a tack coat is applied as an interface. If it is previously milled superficially, the texture is modified, affecting its dosage; given an increase in interface surface that would require higher dosages and formation of grooves that would produce runoff of bitumen emulsion, limiting them. A mechanically optimal compromise solution is necessary. In its study, a procedure is applied to elaborate specimens and to test them; establishing the dosages by proportionalities concerning the increase in the surface of the interface due to milling. For this, a model is developed to estimate this increase through an adaptation of the Sand Patch Test. The optimal dosage in terms of the increase in surface area is estimated with static tests, arriving at a field application model associated. The research is carried out on materials from Argentina. As validation, fatigue analysis, and on-site applications are carried out in Argentina and Spain.
Description
Keywords
Rehabilitación de firmes, Fresado, Riegos de adherencia, Parche de arena, Pavement rehabilitation, Milling, Tack coat, Sand patch test
Citation
Carreteras de la Asociación Española de Carreteras (España). Código: ISSN 0212-6389. 4° Época, N°235, Año 2021, pp. 19-29.
Endorsement
Review
Supplemented By
Referenced By
Creative Commons license
Except where otherwised noted, this item's license is described as openAccess