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Recycled Cellulose Fiber Reinforced Plaster

This paper aims to develop recycled fiber reinforced cement plaster mortar with a good workability of fresh mixture, and insulation, mechanical and adhesive properties of the final hardened product for indoor application. The effect of the incorporation of different portions of three types of cellul...

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Autores principales: Stevulova, Nadezda, Vaclavik, Vojtech, Hospodarova, Viola, Dvorský, Tomáš
Formato: Online Artículo Texto
Lenguaje:English
Publicado: MDPI 2021
Materias:
Acceso en línea:https://www.ncbi.nlm.nih.gov/pmc/articles/PMC8198119/
https://www.ncbi.nlm.nih.gov/pubmed/34072982
http://dx.doi.org/10.3390/ma14112986
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author Stevulova, Nadezda
Vaclavik, Vojtech
Hospodarova, Viola
Dvorský, Tomáš
author_facet Stevulova, Nadezda
Vaclavik, Vojtech
Hospodarova, Viola
Dvorský, Tomáš
author_sort Stevulova, Nadezda
collection PubMed
description This paper aims to develop recycled fiber reinforced cement plaster mortar with a good workability of fresh mixture, and insulation, mechanical and adhesive properties of the final hardened product for indoor application. The effect of the incorporation of different portions of three types of cellulose fibers from waste paper recycling into cement mortar (cement/sand ratio of 1:3) on its properties of workability, as well as other physical and mechanical parameters, was studied. The waste paper fiber (WPF) samples were characterized by their different cellulose contents, degree of polymerization, and residues from paper-making. The cement to waste paper fiber mass ratios (C/WPF) ranged from 500:1 to 3:1, and significantly influenced the consistency, bulk density, thermal conductivity, water absorption behavior, and compressive and flexural strength of the fiber-cement mortars. The workability tests of the fiber-cement mortars containing less than 2% WPF achieved optimal properties corresponding to plastic mortars (140–200 mm). The development of dry bulk density and thermal conductivity values of 28-day hardened fiber-cement mortars was favorable with a declining C/WPF ratio, while increasing the fiber content in cement mortars led to a worsening of the water absorption behavior and a lower mechanical performance of the mortars. These key findings were related to a higher porosity and weaker adhesion of fibers and cement particles at the matrix-fiber interface. The adhesion ability of fiber-cement plastering mortar based on WPF samples with the highest cellulose content as a fine filler and two types of mixed hydraulic binder (cement with finely ground granulated blast furnace slag and natural limestone) on commonly used substrates, such as brick and aerated concrete blocks, was also investigated. The adhesive strength testing of these hardened fiber-cement plaster mortars on both substrates revealed lime-cement mortar to be more suitable for fine plaster. The different behavior of fiber-cement containing finely ground slag manifested in a greater depth of the plaster layer failure, crack formation, and in greater damage to the cohesion between the substrate and mortar for the observed time.
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spelling pubmed-81981192021-06-14 Recycled Cellulose Fiber Reinforced Plaster Stevulova, Nadezda Vaclavik, Vojtech Hospodarova, Viola Dvorský, Tomáš Materials (Basel) Article This paper aims to develop recycled fiber reinforced cement plaster mortar with a good workability of fresh mixture, and insulation, mechanical and adhesive properties of the final hardened product for indoor application. The effect of the incorporation of different portions of three types of cellulose fibers from waste paper recycling into cement mortar (cement/sand ratio of 1:3) on its properties of workability, as well as other physical and mechanical parameters, was studied. The waste paper fiber (WPF) samples were characterized by their different cellulose contents, degree of polymerization, and residues from paper-making. The cement to waste paper fiber mass ratios (C/WPF) ranged from 500:1 to 3:1, and significantly influenced the consistency, bulk density, thermal conductivity, water absorption behavior, and compressive and flexural strength of the fiber-cement mortars. The workability tests of the fiber-cement mortars containing less than 2% WPF achieved optimal properties corresponding to plastic mortars (140–200 mm). The development of dry bulk density and thermal conductivity values of 28-day hardened fiber-cement mortars was favorable with a declining C/WPF ratio, while increasing the fiber content in cement mortars led to a worsening of the water absorption behavior and a lower mechanical performance of the mortars. These key findings were related to a higher porosity and weaker adhesion of fibers and cement particles at the matrix-fiber interface. The adhesion ability of fiber-cement plastering mortar based on WPF samples with the highest cellulose content as a fine filler and two types of mixed hydraulic binder (cement with finely ground granulated blast furnace slag and natural limestone) on commonly used substrates, such as brick and aerated concrete blocks, was also investigated. The adhesive strength testing of these hardened fiber-cement plaster mortars on both substrates revealed lime-cement mortar to be more suitable for fine plaster. The different behavior of fiber-cement containing finely ground slag manifested in a greater depth of the plaster layer failure, crack formation, and in greater damage to the cohesion between the substrate and mortar for the observed time. MDPI 2021-05-31 /pmc/articles/PMC8198119/ /pubmed/34072982 http://dx.doi.org/10.3390/ma14112986 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
Stevulova, Nadezda
Vaclavik, Vojtech
Hospodarova, Viola
Dvorský, Tomáš
Recycled Cellulose Fiber Reinforced Plaster
title Recycled Cellulose Fiber Reinforced Plaster
title_full Recycled Cellulose Fiber Reinforced Plaster
title_fullStr Recycled Cellulose Fiber Reinforced Plaster
title_full_unstemmed Recycled Cellulose Fiber Reinforced Plaster
title_short Recycled Cellulose Fiber Reinforced Plaster
title_sort recycled cellulose fiber reinforced plaster
topic Article
url https://www.ncbi.nlm.nih.gov/pmc/articles/PMC8198119/
https://www.ncbi.nlm.nih.gov/pubmed/34072982
http://dx.doi.org/10.3390/ma14112986
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AT vaclavikvojtech recycledcellulosefiberreinforcedplaster
AT hospodarovaviola recycledcellulosefiberreinforcedplaster
AT dvorskytomas recycledcellulosefiberreinforcedplaster