Optimal hydrated lime concentration in asphalt binder to improve photo degradation resistance
Autor(a) principal: | |
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Data de Publicação: | 2018 |
Outros Autores: | , , , , |
Tipo de documento: | Artigo |
Idioma: | eng |
Título da fonte: | REM - International Engineering Journal |
Texto Completo: | http://old.scielo.br/scielo.php?script=sci_arttext&pid=S2448-167X2018000200225 |
Resumo: | Abstract The effect of short-term oxidation, evaluated by using a Rolling Thin Film Oven Test, and the effect of weathering aging on the oxidation process of hydrated lime modified asphalts were studied. Hydrated lime (HL) has been known as an additive for asphalt mixtures and is now considered as a binder additive that increases asphalt mixture durability. HL was added to the binder in contents of 5, 10, 20, and 30 wt.%. The HL modified binders were aged by using the Rolling Thin Film Oven Test and weathering tests with xenon radiation. A storage stability test by measuring the softening points of HL modified binders was performed. The Thin Layer Chromatography with Flame Ionization Detection (TLC-FID) analysis was used to determine the fractions of resins, aromatics, asphaltenes and saturates of the binders. The aging of HL modified binders was evaluated by using Fourier transform infrared spectroscopy. According to the stability test, a hydrated lime concentration value close to 20 wt.% is the critical point at which there is a risk of segregation of the asphalt binder and hydrated lime during transportation and storage. For the sample weathering aged for 250 hours, a decrease of saturated and aromatic fractions, furthermore an increase in asphaltenes were observed for all samples. Results have shown that additions of 10 wt.% of hydrated lime in asphalt binders resulted in a higher photodegradation resistance among the other asphalt mixtures considering the carbonyl index, stability test and colloidal instability test results. |
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Optimal hydrated lime concentration in asphalt binder to improve photo degradation resistancehydrated limeasphalt binderweathering aginginfrared spectroscopycolloidal instabilityAbstract The effect of short-term oxidation, evaluated by using a Rolling Thin Film Oven Test, and the effect of weathering aging on the oxidation process of hydrated lime modified asphalts were studied. Hydrated lime (HL) has been known as an additive for asphalt mixtures and is now considered as a binder additive that increases asphalt mixture durability. HL was added to the binder in contents of 5, 10, 20, and 30 wt.%. The HL modified binders were aged by using the Rolling Thin Film Oven Test and weathering tests with xenon radiation. A storage stability test by measuring the softening points of HL modified binders was performed. The Thin Layer Chromatography with Flame Ionization Detection (TLC-FID) analysis was used to determine the fractions of resins, aromatics, asphaltenes and saturates of the binders. The aging of HL modified binders was evaluated by using Fourier transform infrared spectroscopy. According to the stability test, a hydrated lime concentration value close to 20 wt.% is the critical point at which there is a risk of segregation of the asphalt binder and hydrated lime during transportation and storage. For the sample weathering aged for 250 hours, a decrease of saturated and aromatic fractions, furthermore an increase in asphaltenes were observed for all samples. Results have shown that additions of 10 wt.% of hydrated lime in asphalt binders resulted in a higher photodegradation resistance among the other asphalt mixtures considering the carbonyl index, stability test and colloidal instability test results.Fundação Gorceix2018-04-01info:eu-repo/semantics/articleinfo:eu-repo/semantics/publishedVersiontext/htmlhttp://old.scielo.br/scielo.php?script=sci_arttext&pid=S2448-167X2018000200225REM - International Engineering Journal v.71 n.2 2018reponame:REM - International Engineering Journalinstname:Fundação Gorceix (FG)instacron:FG10.1590/0370-44672017710112info:eu-repo/semantics/openAccessBanja,André GustavoAraújo,Maria de Fátima Amazonas de SáCastro,Maria das Mercês Reis deMoreira,Roberto LuizLeite,Leni Figueiredo MathiasLins,Vanessa de Freitas Cunhaeng2018-04-09T00:00:00Zoai:scielo:S2448-167X2018000200225Revistahttps://www.rem.com.br/?lang=pt-brPRIhttps://old.scielo.br/oai/scielo-oai.php||editor@rem.com.br2448-167X2448-167Xopendoar:2018-04-09T00:00REM - International Engineering Journal - Fundação Gorceix (FG)false |
dc.title.none.fl_str_mv |
Optimal hydrated lime concentration in asphalt binder to improve photo degradation resistance |
title |
Optimal hydrated lime concentration in asphalt binder to improve photo degradation resistance |
spellingShingle |
Optimal hydrated lime concentration in asphalt binder to improve photo degradation resistance Banja,André Gustavo hydrated lime asphalt binder weathering aging infrared spectroscopy colloidal instability |
title_short |
Optimal hydrated lime concentration in asphalt binder to improve photo degradation resistance |
title_full |
Optimal hydrated lime concentration in asphalt binder to improve photo degradation resistance |
title_fullStr |
Optimal hydrated lime concentration in asphalt binder to improve photo degradation resistance |
title_full_unstemmed |
Optimal hydrated lime concentration in asphalt binder to improve photo degradation resistance |
title_sort |
Optimal hydrated lime concentration in asphalt binder to improve photo degradation resistance |
author |
Banja,André Gustavo |
author_facet |
Banja,André Gustavo Araújo,Maria de Fátima Amazonas de Sá Castro,Maria das Mercês Reis de Moreira,Roberto Luiz Leite,Leni Figueiredo Mathias Lins,Vanessa de Freitas Cunha |
author_role |
author |
author2 |
Araújo,Maria de Fátima Amazonas de Sá Castro,Maria das Mercês Reis de Moreira,Roberto Luiz Leite,Leni Figueiredo Mathias Lins,Vanessa de Freitas Cunha |
author2_role |
author author author author author |
dc.contributor.author.fl_str_mv |
Banja,André Gustavo Araújo,Maria de Fátima Amazonas de Sá Castro,Maria das Mercês Reis de Moreira,Roberto Luiz Leite,Leni Figueiredo Mathias Lins,Vanessa de Freitas Cunha |
dc.subject.por.fl_str_mv |
hydrated lime asphalt binder weathering aging infrared spectroscopy colloidal instability |
topic |
hydrated lime asphalt binder weathering aging infrared spectroscopy colloidal instability |
description |
Abstract The effect of short-term oxidation, evaluated by using a Rolling Thin Film Oven Test, and the effect of weathering aging on the oxidation process of hydrated lime modified asphalts were studied. Hydrated lime (HL) has been known as an additive for asphalt mixtures and is now considered as a binder additive that increases asphalt mixture durability. HL was added to the binder in contents of 5, 10, 20, and 30 wt.%. The HL modified binders were aged by using the Rolling Thin Film Oven Test and weathering tests with xenon radiation. A storage stability test by measuring the softening points of HL modified binders was performed. The Thin Layer Chromatography with Flame Ionization Detection (TLC-FID) analysis was used to determine the fractions of resins, aromatics, asphaltenes and saturates of the binders. The aging of HL modified binders was evaluated by using Fourier transform infrared spectroscopy. According to the stability test, a hydrated lime concentration value close to 20 wt.% is the critical point at which there is a risk of segregation of the asphalt binder and hydrated lime during transportation and storage. For the sample weathering aged for 250 hours, a decrease of saturated and aromatic fractions, furthermore an increase in asphaltenes were observed for all samples. Results have shown that additions of 10 wt.% of hydrated lime in asphalt binders resulted in a higher photodegradation resistance among the other asphalt mixtures considering the carbonyl index, stability test and colloidal instability test results. |
publishDate |
2018 |
dc.date.none.fl_str_mv |
2018-04-01 |
dc.type.driver.fl_str_mv |
info:eu-repo/semantics/article |
dc.type.status.fl_str_mv |
info:eu-repo/semantics/publishedVersion |
format |
article |
status_str |
publishedVersion |
dc.identifier.uri.fl_str_mv |
http://old.scielo.br/scielo.php?script=sci_arttext&pid=S2448-167X2018000200225 |
url |
http://old.scielo.br/scielo.php?script=sci_arttext&pid=S2448-167X2018000200225 |
dc.language.iso.fl_str_mv |
eng |
language |
eng |
dc.relation.none.fl_str_mv |
10.1590/0370-44672017710112 |
dc.rights.driver.fl_str_mv |
info:eu-repo/semantics/openAccess |
eu_rights_str_mv |
openAccess |
dc.format.none.fl_str_mv |
text/html |
dc.publisher.none.fl_str_mv |
Fundação Gorceix |
publisher.none.fl_str_mv |
Fundação Gorceix |
dc.source.none.fl_str_mv |
REM - International Engineering Journal v.71 n.2 2018 reponame:REM - International Engineering Journal instname:Fundação Gorceix (FG) instacron:FG |
instname_str |
Fundação Gorceix (FG) |
instacron_str |
FG |
institution |
FG |
reponame_str |
REM - International Engineering Journal |
collection |
REM - International Engineering Journal |
repository.name.fl_str_mv |
REM - International Engineering Journal - Fundação Gorceix (FG) |
repository.mail.fl_str_mv |
||editor@rem.com.br |
_version_ |
1754734690937339904 |