Use of diatomite and pumice as stabilizers in stone mastic asphalt mixtures

Abstract: Stone Mastic Asphalt (SMA) mixtures are susceptible to drain down since they contain more bitumen comparing to Hot Mix Asphalt (HMA) mixtures. To prevent this problem, stabilizers are used in SMA mixtures. Stabilizers are costly materials and needed to be manufactured with several processe...

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Autores principales:	Aslan,Şevket, Aktaş,Bekir
Lenguaje:	English
Publicado:	Escuela de Construcción Civil, Pontificia Universidad Católica de Chile 2018
Materias:	Stone mastic asphalt stabilizer diatomite pumice fiber
Acceso en línea:	http://www.scielo.cl/scielo.php?script=sci_arttext&pid=S0718-915X2018000300531
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spelling	oai:scielo:S0718-915X20180003005312019-03-28Use of diatomite and pumice as stabilizers in stone mastic asphalt mixturesAslan,ŞevketAktaş,Bekir Stone mastic asphalt stabilizer diatomite pumice fiber Abstract: Stone Mastic Asphalt (SMA) mixtures are susceptible to drain down since they contain more bitumen comparing to Hot Mix Asphalt (HMA) mixtures. To prevent this problem, stabilizers are used in SMA mixtures. Stabilizers are costly materials and needed to be manufactured with several processes. In this study, pumice and diatomite materials were evaluated to see whether they could be used in SMA mixtures as stabilizers. The optimum bitumen contents of the mixtures having different amounts of pumice (1, 1.5 and 2%) and diatomite (0.25, 0.50, 0.75 and 1.00%) were determined in accordance with Marshall design method. Then, the drain down characteristics of SMA mixtures at optimum bitumen content were found. Finally, the resistance of the mixtures to moisture-induced damage is analyzed by conducting the Tensile Strength Ratio (TSR) test. The results indicate that there is a high potential of using certain amounts of pumice and diatomite in SMA mixtures as stabilizers.info:eu-repo/semantics/openAccessEscuela de Construcción Civil, Pontificia Universidad Católica de ChileRevista de la construcción v.17 n.3 20182018-12-01text/htmlhttp://www.scielo.cl/scielo.php?script=sci_arttext&pid=S0718-915X2018000300531en10.7764/rdlc.17.3.531
institution	Scielo Chile
collection	Scielo Chile
language	English
topic	Stone mastic asphalt stabilizer diatomite pumice fiber
spellingShingle	Stone mastic asphalt stabilizer diatomite pumice fiber Aslan,Şevket Aktaş,Bekir Use of diatomite and pumice as stabilizers in stone mastic asphalt mixtures
description	Abstract: Stone Mastic Asphalt (SMA) mixtures are susceptible to drain down since they contain more bitumen comparing to Hot Mix Asphalt (HMA) mixtures. To prevent this problem, stabilizers are used in SMA mixtures. Stabilizers are costly materials and needed to be manufactured with several processes. In this study, pumice and diatomite materials were evaluated to see whether they could be used in SMA mixtures as stabilizers. The optimum bitumen contents of the mixtures having different amounts of pumice (1, 1.5 and 2%) and diatomite (0.25, 0.50, 0.75 and 1.00%) were determined in accordance with Marshall design method. Then, the drain down characteristics of SMA mixtures at optimum bitumen content were found. Finally, the resistance of the mixtures to moisture-induced damage is analyzed by conducting the Tensile Strength Ratio (TSR) test. The results indicate that there is a high potential of using certain amounts of pumice and diatomite in SMA mixtures as stabilizers.
author	Aslan,Şevket Aktaş,Bekir
author_facet	Aslan,Şevket Aktaş,Bekir
author_sort	Aslan,Şevket
title	Use of diatomite and pumice as stabilizers in stone mastic asphalt mixtures
title_short	Use of diatomite and pumice as stabilizers in stone mastic asphalt mixtures
title_full	Use of diatomite and pumice as stabilizers in stone mastic asphalt mixtures
title_fullStr	Use of diatomite and pumice as stabilizers in stone mastic asphalt mixtures
title_full_unstemmed	Use of diatomite and pumice as stabilizers in stone mastic asphalt mixtures
title_sort	use of diatomite and pumice as stabilizers in stone mastic asphalt mixtures
publisher	Escuela de Construcción Civil, Pontificia Universidad Católica de Chile
publishDate	2018
url	http://www.scielo.cl/scielo.php?script=sci_arttext&pid=S0718-915X2018000300531
work_keys_str_mv	AT aslan350evket useofdiatomiteandpumiceasstabilizersinstonemasticasphaltmixtures AT akta351bekir useofdiatomiteandpumiceasstabilizersinstonemasticasphaltmixtures
_version_	1714206295140073472

Use of diatomite and pumice as stabilizers in stone mastic asphalt mixtures

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