Using petrographic techniques to evaluate the induced effects of NaCl, extreme climatic conditions, and traffic load on Spanish road surfaces

Autor: Pérez Fortes, A. P., Varas-Muriel, María José, Castiñeiras García, Pedro
Přispěvatelé: Comunidad de Madrid, Centro de Estudios y Experimentación de Obras Públicas (España), Pérez-Fortes, A. P., Varas, María José, Castiñeiras García, P., Pérez-Fortes, A. P. [0000-0003-0068-7722], Varas, María José [0000-0003-2378-9414], Castiñeiras García, P. [0000-0002-1835-3192]
Jazyk: angličtina
Rok vydání: 2017
Předmět:
Zdroj: E-Prints Complutense: Archivo Institucional de la UCM
Universidad Complutense de Madrid
Materiales de Construccion, Vol 67, Iss 328, Pp e138-e138 (2017)
Materiales de Construcción; Vol. 67 No. 328 (2017); e138
Materiales de Construcción; Vol. 67 Núm. 328 (2017); e138
Materiales de Construcción
Consejo Superior de Investigaciones Científicas (CSIC)
Digital.CSIC. Repositorio Institucional del CSIC
instname
E-Prints Complutense. Archivo Institucional de la UCM
ISSN: 1988-3226
0465-2746
DOI: 10.3989/mc.2017.v67.i328
Popis: The asphalt surface layer is the most exposed to weather and traffic conditions on roads, especially those subjected to winter maintenance. Therefore, a deep knowledge of the mechanisms which can damage this layer is necessary to improve its design, construction and long-term use. With this purpose, two types of asphalt mixtures used on roads from NW Spain were subjected to durability tests (freezing-thaw and thermal-stress) with a saturated NaCl solution. After the durability tests, a wheel tracking test was performed on the samples, and the resultant material was analyzed by optical polarized light and fluorescence microscopy. This analysis showed that the binder-aggregate low adhesion was the main responsible of the asphalt mixture damage. This damage was concentrated in the aggregates because the binder acted as an impermeable wall. Consequently, the NaCl solution penetrated and degraded the aggregates quickly and strongly.
This research was partly funded through the Community of Madrid under the project S2013/ MIT-2914 (GEOMATERIALS-2CM) and the Grant Program from the CEDEX Research Agency (BOE 27/06/2009).
Databáze: OpenAIRE
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