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Durability, Strength, and Erosion Resistance Assessment of Lignin Biopolymer Treated Soil

To mitigate the negative environmental effects of the overuse of conventional materials—such as cement—in soil improvement, sustainable engineering techniques need to be applied. The use of biopolymers as an alternative, environmentally friendly solution has received a great deal of attention recent...

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Autores principales: Bagheri, Pouyan, Gratchev, Ivan, Son, Suwon, Rybachuk, Maksym
Formato: Online Artículo Texto
Lenguaje:English
Publicado: MDPI 2023
Materias:
Acceso en línea:https://www.ncbi.nlm.nih.gov/pmc/articles/PMC10053852/
https://www.ncbi.nlm.nih.gov/pubmed/36987336
http://dx.doi.org/10.3390/polym15061556
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author Bagheri, Pouyan
Gratchev, Ivan
Son, Suwon
Rybachuk, Maksym
author_facet Bagheri, Pouyan
Gratchev, Ivan
Son, Suwon
Rybachuk, Maksym
author_sort Bagheri, Pouyan
collection PubMed
description To mitigate the negative environmental effects of the overuse of conventional materials—such as cement—in soil improvement, sustainable engineering techniques need to be applied. The use of biopolymers as an alternative, environmentally friendly solution has received a great deal of attention recently. The application of lignin, a sustainable and ecofriendly biobased adhesive, to enhance soil mechanical properties has been investigated. The changes to engineering properties of lignin-infused soil relative to a lignin addition to soil at 0.5, 1, and 3.0 wt.% (including Atterberg limits, unconfined compression strength, consolidated undrained triaxial characteristics, and mechanical properties under wetting and drying cycles that mimic atmospheric conditions) have been studied. Our findings reveal that the soil’s physical and strength characteristics, including unconfined compressive strength and soil cohesion, were improved by adding lignin through the aggregated soil particle process. While the internal friction angle of the soil was slightly decreased, the lignin additive significantly increased soil cohesion; the addition of 3% lignin to the soil doubled the soil’s compressive strength and cohesion. Lignin-treated samples experienced less strength loss during wetting and drying cycles. After six repeated wetting and drying cycles, the strength of the 3% lignin-treated sample was twice that of the untreated sample. Soil treated with 3% lignin displayed the highest erosion resistance and minimal soil mass loss of ca. 10% under emulated atmospheric conditions. This study offers useful insights into the utilization of lignin biopolymer in practical engineering applications, such as road stabilization, slope reinforcement, and erosion prevention.
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spelling pubmed-100538522023-03-30 Durability, Strength, and Erosion Resistance Assessment of Lignin Biopolymer Treated Soil Bagheri, Pouyan Gratchev, Ivan Son, Suwon Rybachuk, Maksym Polymers (Basel) Article To mitigate the negative environmental effects of the overuse of conventional materials—such as cement—in soil improvement, sustainable engineering techniques need to be applied. The use of biopolymers as an alternative, environmentally friendly solution has received a great deal of attention recently. The application of lignin, a sustainable and ecofriendly biobased adhesive, to enhance soil mechanical properties has been investigated. The changes to engineering properties of lignin-infused soil relative to a lignin addition to soil at 0.5, 1, and 3.0 wt.% (including Atterberg limits, unconfined compression strength, consolidated undrained triaxial characteristics, and mechanical properties under wetting and drying cycles that mimic atmospheric conditions) have been studied. Our findings reveal that the soil’s physical and strength characteristics, including unconfined compressive strength and soil cohesion, were improved by adding lignin through the aggregated soil particle process. While the internal friction angle of the soil was slightly decreased, the lignin additive significantly increased soil cohesion; the addition of 3% lignin to the soil doubled the soil’s compressive strength and cohesion. Lignin-treated samples experienced less strength loss during wetting and drying cycles. After six repeated wetting and drying cycles, the strength of the 3% lignin-treated sample was twice that of the untreated sample. Soil treated with 3% lignin displayed the highest erosion resistance and minimal soil mass loss of ca. 10% under emulated atmospheric conditions. This study offers useful insights into the utilization of lignin biopolymer in practical engineering applications, such as road stabilization, slope reinforcement, and erosion prevention. MDPI 2023-03-21 /pmc/articles/PMC10053852/ /pubmed/36987336 http://dx.doi.org/10.3390/polym15061556 Text en © 2023 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
Bagheri, Pouyan
Gratchev, Ivan
Son, Suwon
Rybachuk, Maksym
Durability, Strength, and Erosion Resistance Assessment of Lignin Biopolymer Treated Soil
title Durability, Strength, and Erosion Resistance Assessment of Lignin Biopolymer Treated Soil
title_full Durability, Strength, and Erosion Resistance Assessment of Lignin Biopolymer Treated Soil
title_fullStr Durability, Strength, and Erosion Resistance Assessment of Lignin Biopolymer Treated Soil
title_full_unstemmed Durability, Strength, and Erosion Resistance Assessment of Lignin Biopolymer Treated Soil
title_short Durability, Strength, and Erosion Resistance Assessment of Lignin Biopolymer Treated Soil
title_sort durability, strength, and erosion resistance assessment of lignin biopolymer treated soil
topic Article
url https://www.ncbi.nlm.nih.gov/pmc/articles/PMC10053852/
https://www.ncbi.nlm.nih.gov/pubmed/36987336
http://dx.doi.org/10.3390/polym15061556
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