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Effects of Portland Cement and Polymer Powder on the Properties of Cement-Bound Road Base Mixtures

This article presents the test results for the physical and mechanical properties and fracture toughness of polymer-modified hydraulically-bound mixtures (HBM) produced with Portland cement for road base layers. The modifier used was a redispersible polymer powder (RPP) based on a vinyl ethylene ace...

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Autores principales: Buczyński, Przemysław, Iwański, Marek, Mazurek, Grzegorz, Krasowski, Jakub, Krasowski, Maciej
Formato: Online Artículo Texto
Lenguaje:English
Publicado: MDPI 2020
Materias:
Acceso en línea:https://www.ncbi.nlm.nih.gov/pmc/articles/PMC7579377/
https://www.ncbi.nlm.nih.gov/pubmed/32987755
http://dx.doi.org/10.3390/ma13194253
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author Buczyński, Przemysław
Iwański, Marek
Mazurek, Grzegorz
Krasowski, Jakub
Krasowski, Maciej
author_facet Buczyński, Przemysław
Iwański, Marek
Mazurek, Grzegorz
Krasowski, Jakub
Krasowski, Maciej
author_sort Buczyński, Przemysław
collection PubMed
description This article presents the test results for the physical and mechanical properties and fracture toughness of polymer-modified hydraulically-bound mixtures (HBM) produced with Portland cement for road base layers. The modifier used was a redispersible polymer powder (RPP) based on a vinyl ethylene acetate (EVA) copolymer obtained by spray drying. A three-level full factorial design with two factors was applied to determine the contents of Portland cement and polymer powder in the cement-bound mixture (CBM). Both Portland cement and polymer powder were added at three levels: 0%, 2%, and 4%. The assessment included basic physical properties (water absorption, density, and bulk density) and mechanical properties (stiffness modulus, axial compressive strength, and indirect tensile strength) of the CBM. Particular attention was paid to the assessment of fracture toughness in the semi-circular bending test. The results of the research show that polymer powder positively influenced the mechanical properties of CBM by improving its cohesion while maintaining its stiffness. Another benefit coming from the use of polymer powder was the CBM’s increased resistance to cracking, which is the desired characteristic from the perspective of pavement durability.
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spelling pubmed-75793772020-10-29 Effects of Portland Cement and Polymer Powder on the Properties of Cement-Bound Road Base Mixtures Buczyński, Przemysław Iwański, Marek Mazurek, Grzegorz Krasowski, Jakub Krasowski, Maciej Materials (Basel) Article This article presents the test results for the physical and mechanical properties and fracture toughness of polymer-modified hydraulically-bound mixtures (HBM) produced with Portland cement for road base layers. The modifier used was a redispersible polymer powder (RPP) based on a vinyl ethylene acetate (EVA) copolymer obtained by spray drying. A three-level full factorial design with two factors was applied to determine the contents of Portland cement and polymer powder in the cement-bound mixture (CBM). Both Portland cement and polymer powder were added at three levels: 0%, 2%, and 4%. The assessment included basic physical properties (water absorption, density, and bulk density) and mechanical properties (stiffness modulus, axial compressive strength, and indirect tensile strength) of the CBM. Particular attention was paid to the assessment of fracture toughness in the semi-circular bending test. The results of the research show that polymer powder positively influenced the mechanical properties of CBM by improving its cohesion while maintaining its stiffness. Another benefit coming from the use of polymer powder was the CBM’s increased resistance to cracking, which is the desired characteristic from the perspective of pavement durability. MDPI 2020-09-24 /pmc/articles/PMC7579377/ /pubmed/32987755 http://dx.doi.org/10.3390/ma13194253 Text en © 2020 by the authors. 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 (http://creativecommons.org/licenses/by/4.0/).
spellingShingle Article
Buczyński, Przemysław
Iwański, Marek
Mazurek, Grzegorz
Krasowski, Jakub
Krasowski, Maciej
Effects of Portland Cement and Polymer Powder on the Properties of Cement-Bound Road Base Mixtures
title Effects of Portland Cement and Polymer Powder on the Properties of Cement-Bound Road Base Mixtures
title_full Effects of Portland Cement and Polymer Powder on the Properties of Cement-Bound Road Base Mixtures
title_fullStr Effects of Portland Cement and Polymer Powder on the Properties of Cement-Bound Road Base Mixtures
title_full_unstemmed Effects of Portland Cement and Polymer Powder on the Properties of Cement-Bound Road Base Mixtures
title_short Effects of Portland Cement and Polymer Powder on the Properties of Cement-Bound Road Base Mixtures
title_sort effects of portland cement and polymer powder on the properties of cement-bound road base mixtures
topic Article
url https://www.ncbi.nlm.nih.gov/pmc/articles/PMC7579377/
https://www.ncbi.nlm.nih.gov/pubmed/32987755
http://dx.doi.org/10.3390/ma13194253
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