Analysis of connected air voids in warm mix asphalt

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 i...

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Autores:
Alvarez Lugo, Allex Eduardo
Macias Garcia, Nelkin Andres
Fuentes Pumarejo, Luis Guillermo
Tipo de recurso:
Article of journal
Fecha de publicación:
2012
Institución:
Universidad Nacional de Colombia
Repositorio:
Universidad Nacional de Colombia
Idioma:
spa
OAI Identifier:
oai:repositorio.unal.edu.co:unal/35137
Acceso en línea:
https://repositorio.unal.edu.co/handle/unal/35137
http://bdigital.unal.edu.co/25217/
Palabra clave:
Warm mix asphalt
Connected air voids
X-ray Computed Tomography
Internal structure
Hot mix asphalt
Rights
openAccess
License
Atribución-NoComercial 4.0 Internacional
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spelling Atribución-NoComercial 4.0 InternacionalDerechos reservados - Universidad Nacional de Colombiahttp://creativecommons.org/licenses/by-nc/4.0/info:eu-repo/semantics/openAccesshttp://purl.org/coar/access_right/c_abf2Alvarez Lugo, Allex Eduardo0e2b5e85-6ff2-412b-96f7-2b194527b612300Macias Garcia, Nelkin Andresba5ef0b5-39ce-4b56-87a4-89115d9dcfaa300Fuentes Pumarejo, Luis Guillermo0d928c7f-6f8b-4c95-a8e8-0b289a0a69053002019-06-27T23:57:48Z2019-06-27T23:57:48Z2012https://repositorio.unal.edu.co/handle/unal/35137http://bdigital.unal.edu.co/25217/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.application/pdfspaUniversidad Nacional de Colombia Sede Medellínhttp://revistas.unal.edu.co/index.php/dyna/article/view/22522Universidad Nacional de Colombia Revistas electrónicas UN DynaDynaDyna; Vol. 79, núm. 172 (2012); 29-37 DYNA; Vol. 79, núm. 172 (2012); 29-37 2346-2183 0012-7353Alvarez 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 .Analysis of connected air voids in warm mix asphaltArtículo de revistainfo:eu-repo/semantics/articleinfo:eu-repo/semantics/publishedVersionhttp://purl.org/coar/resource_type/c_6501http://purl.org/coar/resource_type/c_2df8fbb1http://purl.org/coar/version/c_970fb48d4fbd8a85Texthttp://purl.org/redcol/resource_type/ARTWarm mix asphaltConnected air voidsX-ray Computed TomographyInternal structureHot mix asphaltORIGINAL22522-157482-1-PB.htmltext/html41153https://repositorio.unal.edu.co/bitstream/unal/35137/1/22522-157482-1-PB.html6bc9d67d20b4ec94c22fcc3adbf58a80MD5122522-106530-1-PB.pdfapplication/pdf2040864https://repositorio.unal.edu.co/bitstream/unal/35137/2/22522-106530-1-PB.pdff3ab954a1e4fcba3eb72465e7fa4c686MD52THUMBNAIL22522-106530-1-PB.pdf.jpg22522-106530-1-PB.pdf.jpgGenerated Thumbnailimage/jpeg8919https://repositorio.unal.edu.co/bitstream/unal/35137/3/22522-106530-1-PB.pdf.jpg17a3cc0254c4e12214b5e6cc2db617fbMD53unal/35137oai:repositorio.unal.edu.co:unal/351372023-12-30 23:05:38.496Repositorio Institucional Universidad Nacional de Colombiarepositorio_nal@unal.edu.co
dc.title.spa.fl_str_mv Analysis of connected air voids in warm mix asphalt
title Analysis of connected air voids in warm mix asphalt
spellingShingle Analysis of connected air voids in warm mix asphalt
Warm mix asphalt
Connected air voids
X-ray Computed Tomography
Internal structure
Hot mix asphalt
title_short Analysis of connected air voids in warm mix asphalt
title_full Analysis of connected air voids in warm mix asphalt
title_fullStr Analysis of connected air voids in warm mix asphalt
title_full_unstemmed Analysis of connected air voids in warm mix asphalt
title_sort Analysis of connected air voids in warm mix asphalt
dc.creator.fl_str_mv Alvarez Lugo, Allex Eduardo
Macias Garcia, Nelkin Andres
Fuentes Pumarejo, Luis Guillermo
dc.contributor.author.spa.fl_str_mv Alvarez Lugo, Allex Eduardo
Macias Garcia, Nelkin Andres
Fuentes Pumarejo, Luis Guillermo
dc.subject.proposal.spa.fl_str_mv Warm mix asphalt
Connected air voids
X-ray Computed Tomography
Internal structure
Hot mix asphalt
topic Warm mix asphalt
Connected air voids
X-ray Computed Tomography
Internal structure
Hot mix asphalt
description 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.
publishDate 2012
dc.date.issued.spa.fl_str_mv 2012
dc.date.accessioned.spa.fl_str_mv 2019-06-27T23:57:48Z
dc.date.available.spa.fl_str_mv 2019-06-27T23:57:48Z
dc.type.spa.fl_str_mv Artículo de revista
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url https://repositorio.unal.edu.co/handle/unal/35137
http://bdigital.unal.edu.co/25217/
dc.language.iso.spa.fl_str_mv spa
language spa
dc.relation.spa.fl_str_mv http://revistas.unal.edu.co/index.php/dyna/article/view/22522
dc.relation.ispartof.spa.fl_str_mv Universidad Nacional de Colombia Revistas electrónicas UN Dyna
Dyna
dc.relation.ispartofseries.none.fl_str_mv Dyna; Vol. 79, núm. 172 (2012); 29-37 DYNA; Vol. 79, núm. 172 (2012); 29-37 2346-2183 0012-7353
dc.relation.references.spa.fl_str_mv 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 .
dc.rights.spa.fl_str_mv Derechos reservados - Universidad Nacional de Colombia
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dc.rights.license.spa.fl_str_mv Atribución-NoComercial 4.0 Internacional
dc.rights.uri.spa.fl_str_mv http://creativecommons.org/licenses/by-nc/4.0/
dc.rights.accessrights.spa.fl_str_mv info:eu-repo/semantics/openAccess
rights_invalid_str_mv Atribución-NoComercial 4.0 Internacional
Derechos reservados - Universidad Nacional de Colombia
http://creativecommons.org/licenses/by-nc/4.0/
http://purl.org/coar/access_right/c_abf2
eu_rights_str_mv openAccess
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dc.publisher.spa.fl_str_mv Universidad Nacional de Colombia Sede Medellín
institution Universidad Nacional de Colombia
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