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Experimental Study of Tensile Properties of Styrene–Butadiene–Styrene Modified Asphalt Binders

The requirements imposed on road pavements are ever increasing nowadays, necessitating the improvement of the properties of paving materials. The most commonly used paving materials include bituminous mixtures that are composed of aggregate grains bound by a bituminous binder. The properties of bitu...

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Autores principales: Mieczkowski, Paweł, Budziński, Bartosz, Słowik, Mieczysław, Kempa, Jan, Sorociak, Wojciech
Formato: Online Artículo Texto
Lenguaje:English
Publicado: MDPI 2021
Materias:
Acceso en línea:https://www.ncbi.nlm.nih.gov/pmc/articles/PMC8037092/
https://www.ncbi.nlm.nih.gov/pubmed/33916170
http://dx.doi.org/10.3390/ma14071734
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author Mieczkowski, Paweł
Budziński, Bartosz
Słowik, Mieczysław
Kempa, Jan
Sorociak, Wojciech
author_facet Mieczkowski, Paweł
Budziński, Bartosz
Słowik, Mieczysław
Kempa, Jan
Sorociak, Wojciech
author_sort Mieczkowski, Paweł
collection PubMed
description The requirements imposed on road pavements are ever increasing nowadays, necessitating the improvement of the properties of paving materials. The most commonly used paving materials include bituminous mixtures that are composed of aggregate grains bound by a bituminous binder. The properties of bitumens can be improved by modification with polymers. Among the copolymers used for modifying bitumens, styrene–butadiene–styrene, a thermoplastic elastomer, is the most commonly used. This article presents the results of tests conducted on bitumens modified with two types of styrene–butadiene–styrene copolymer (linear and radial). Two bitumen types of different penetration grades (35/50 and 160/220) were used in the experiments. The content of styrene–butadiene–styrene added to the bitumen varied between 1% and 6%. The results of the force ductility test showed that cohesion energy can be used for qualitative evaluation of the efficiency of modification of bitumen with styrene–butadiene–styrene copolymer. The determined values of the cohesion energy were subjected to the original analysis taking into account the three characteristic elongation zones of the tested binders. The performed analyses made it possible to find a parameter whose values correlate significantly with the content of styrene–butadiene–styrene copolymer in the modified bitumen. With smaller amounts of added modifier (approximately 2%), slightly better effects were obtained in the case of linear copolymer styrene–butadiene–styrene and for larger amounts of modifier (5–6%) radial copolymer styrene–butadiene–styrene was found to be more effective. This is confirmed by the changes in the binder structure, as indicated by the penetration index (PI).
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spelling pubmed-80370922021-04-12 Experimental Study of Tensile Properties of Styrene–Butadiene–Styrene Modified Asphalt Binders Mieczkowski, Paweł Budziński, Bartosz Słowik, Mieczysław Kempa, Jan Sorociak, Wojciech Materials (Basel) Article The requirements imposed on road pavements are ever increasing nowadays, necessitating the improvement of the properties of paving materials. The most commonly used paving materials include bituminous mixtures that are composed of aggregate grains bound by a bituminous binder. The properties of bitumens can be improved by modification with polymers. Among the copolymers used for modifying bitumens, styrene–butadiene–styrene, a thermoplastic elastomer, is the most commonly used. This article presents the results of tests conducted on bitumens modified with two types of styrene–butadiene–styrene copolymer (linear and radial). Two bitumen types of different penetration grades (35/50 and 160/220) were used in the experiments. The content of styrene–butadiene–styrene added to the bitumen varied between 1% and 6%. The results of the force ductility test showed that cohesion energy can be used for qualitative evaluation of the efficiency of modification of bitumen with styrene–butadiene–styrene copolymer. The determined values of the cohesion energy were subjected to the original analysis taking into account the three characteristic elongation zones of the tested binders. The performed analyses made it possible to find a parameter whose values correlate significantly with the content of styrene–butadiene–styrene copolymer in the modified bitumen. With smaller amounts of added modifier (approximately 2%), slightly better effects were obtained in the case of linear copolymer styrene–butadiene–styrene and for larger amounts of modifier (5–6%) radial copolymer styrene–butadiene–styrene was found to be more effective. This is confirmed by the changes in the binder structure, as indicated by the penetration index (PI). MDPI 2021-04-01 /pmc/articles/PMC8037092/ /pubmed/33916170 http://dx.doi.org/10.3390/ma14071734 Text en © 2021 by the authors. https://creativecommons.org/licenses/by/4.0/Licensee MDPI, Basel, Switzerland. This article is an open access article distributed under the terms and conditions of the Creative Commons Attribution (CC BY) license (https://creativecommons.org/licenses/by/4.0/).
spellingShingle Article
Mieczkowski, Paweł
Budziński, Bartosz
Słowik, Mieczysław
Kempa, Jan
Sorociak, Wojciech
Experimental Study of Tensile Properties of Styrene–Butadiene–Styrene Modified Asphalt Binders
title Experimental Study of Tensile Properties of Styrene–Butadiene–Styrene Modified Asphalt Binders
title_full Experimental Study of Tensile Properties of Styrene–Butadiene–Styrene Modified Asphalt Binders
title_fullStr Experimental Study of Tensile Properties of Styrene–Butadiene–Styrene Modified Asphalt Binders
title_full_unstemmed Experimental Study of Tensile Properties of Styrene–Butadiene–Styrene Modified Asphalt Binders
title_short Experimental Study of Tensile Properties of Styrene–Butadiene–Styrene Modified Asphalt Binders
title_sort experimental study of tensile properties of styrene–butadiene–styrene modified asphalt binders
topic Article
url https://www.ncbi.nlm.nih.gov/pmc/articles/PMC8037092/
https://www.ncbi.nlm.nih.gov/pubmed/33916170
http://dx.doi.org/10.3390/ma14071734
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