Escudo de la República de Colombia
Sistema Nacional de Biliotecas - Repositorio Institucional Universidad Nacional de Colombia Biblioteca Digital - Repositorio Institucional UN Sistema Nacional de Bibliotecas UN

Analysis of connected air voids in warm mix asphalt

Alvarez Lugo, Allex Eduardo and Macias Garcia, Nelkin Andres and Fuentes Pumarejo, Luis Guillermo (2012) Analysis of connected air voids in warm mix asphalt. Dyna; Vol. 79, núm. 172 (2012); 29-37 DYNA; Vol. 79, núm. 172 (2012); 29-37 2346-2183 0012-7353 .

Texto completo

[img]
Vista previa
PDF
2MB
[img] HTML
41kB

URL oficial: http://revistas.unal.edu.co/index.php/dyna/article...

Resumen

Warm mix asphalt (WMA) are asphalt mixtures produced at reduced temperatures as compared to conventional hot mix asphalt (HMA). Temperature reductions in the order of 10 to 50 C are possible through the incorporation of diverse WMA type additives. However, different aspects, including the mixture internal structure of WMA, are still object of research. Consequently, this paper focused on the assessment of the internal structure of WMA (computed in terms of the Connected Air Voids (CAV) characteristics), fabricated using three WMA additives: Asphamin®, Sasobit®, and Evotherm®. The CAV content corresponds to the fraction of Air Voids (AV) forming connected paths in a compacted specimen and is better related to the asphalt mixture response (e.g., permeability) than the total AV content. The CAV analysis was based on X-ray Computed Tomography scanning and subsequent image analysis. Corresponding results suggested the need of additional research to further characterize field compacted mixtures, produced at densification levels comparable to those achieved in the laboratory. In addition, the inclusion of WMA additives and corresponding temperature reductions did not substantially affect the internal structure of gyratory-compacted specimens (115 mm in height) produced for laboratory mixture evaluation.

Tipo de documento:Artículo - Article
Información adicional:Derechos de autor reservados
Palabras clave:Warm mix asphalt, Connected air voids, X-ray Computed Tomography, Internal structure, Hot mix asphalt
Unidad administrativa:Revistas electrónicas UN > Dyna
Código ID:25217
Enviado por : Dirección Nacional de Bibliotecas STECNICO
Enviado el día :27 Junio 2014 16:22
Ultima modificación:18 Agosto 2014 17:05
Ultima modificación:18 Agosto 2014 17:05
Exportar:Clic aquí
Estadísticas:Clic aquí
Compartir:

Solamente administradores del repositorio: página de control del ítem

Vicerrectoría de Investigación: Número uno en investigación
Indexado por:
Indexado por Scholar Google WorldCat DRIVER Registry of Open Access Repositories OpenDOAR Metabiblioteca BDCOL OAIster Red de repositorios latinoamericanos DSpace BASE Open archives La referencia Colombiae Open Access Theses and Dissertations Tesis latinoamericanas CLACSO
Este sitio web se ve mejor en Firefox