Cargando…
Evaluation of Strength Properties of Sand Modified with Organic Polymers
Due to weak physical properties of sand, chemical reinforcement methods are widely used to improve sand properties to meet the engineering requirements. However, most of the traditional additives cause environmental problems. Therefore, non-traditional additives such as liquid polymers, enzymes, ion...
Autores principales: | , , , , , |
---|---|
Formato: | Online Artículo Texto |
Lenguaje: | English |
Publicado: |
MDPI
2018
|
Materias: | |
Acceso en línea: | https://www.ncbi.nlm.nih.gov/pmc/articles/PMC6414931/ https://www.ncbi.nlm.nih.gov/pubmed/30966322 http://dx.doi.org/10.3390/polym10030287 |
_version_ | 1783403074015985664 |
---|---|
author | Liu, Jin Bai, Yuxia Song, Zezhuo Lu, Yi Qian, Wei Kanungo, Debi Prasanna |
author_facet | Liu, Jin Bai, Yuxia Song, Zezhuo Lu, Yi Qian, Wei Kanungo, Debi Prasanna |
author_sort | Liu, Jin |
collection | PubMed |
description | Due to weak physical properties of sand, chemical reinforcement methods are widely used to improve sand properties to meet the engineering requirements. However, most of the traditional additives cause environmental problems. Therefore, non-traditional additives such as liquid polymers, enzymes, ions, and lignin derivatives have been studied extensively. In this study, organic polymer is used as a soil stabilizer to reinforce the sand. To evaluate the effectiveness of the organic polymer as soil stabilizer, a series of unconfined compression strength (UCS) tests, direct shear tests, and tensile tests were carried out on reinforced sand with different polymer concentrations and dry densities of sand. The reinforcement mechanism was analysed with scanning electron microscopy (SEM) images. The results indicated that the polymer concentration and dry density of sand had significant effects on the strength characteristics of reinforced sand specimens. The unconfined compressive strength, cohesion, and tensile strength of specimens with the same dry density increased with the increasing polymer concentration. The polymer membranes—formed by the mixture of polymer and water—enwrap the sand particles and interlink them to form a stable structure. The efficiency of this stabilization changed with dry sand density. |
format | Online Article Text |
id | pubmed-6414931 |
institution | National Center for Biotechnology Information |
language | English |
publishDate | 2018 |
publisher | MDPI |
record_format | MEDLINE/PubMed |
spelling | pubmed-64149312019-04-02 Evaluation of Strength Properties of Sand Modified with Organic Polymers Liu, Jin Bai, Yuxia Song, Zezhuo Lu, Yi Qian, Wei Kanungo, Debi Prasanna Polymers (Basel) Article Due to weak physical properties of sand, chemical reinforcement methods are widely used to improve sand properties to meet the engineering requirements. However, most of the traditional additives cause environmental problems. Therefore, non-traditional additives such as liquid polymers, enzymes, ions, and lignin derivatives have been studied extensively. In this study, organic polymer is used as a soil stabilizer to reinforce the sand. To evaluate the effectiveness of the organic polymer as soil stabilizer, a series of unconfined compression strength (UCS) tests, direct shear tests, and tensile tests were carried out on reinforced sand with different polymer concentrations and dry densities of sand. The reinforcement mechanism was analysed with scanning electron microscopy (SEM) images. The results indicated that the polymer concentration and dry density of sand had significant effects on the strength characteristics of reinforced sand specimens. The unconfined compressive strength, cohesion, and tensile strength of specimens with the same dry density increased with the increasing polymer concentration. The polymer membranes—formed by the mixture of polymer and water—enwrap the sand particles and interlink them to form a stable structure. The efficiency of this stabilization changed with dry sand density. MDPI 2018-03-08 /pmc/articles/PMC6414931/ /pubmed/30966322 http://dx.doi.org/10.3390/polym10030287 Text en © 2018 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 Liu, Jin Bai, Yuxia Song, Zezhuo Lu, Yi Qian, Wei Kanungo, Debi Prasanna Evaluation of Strength Properties of Sand Modified with Organic Polymers |
title | Evaluation of Strength Properties of Sand Modified with Organic Polymers |
title_full | Evaluation of Strength Properties of Sand Modified with Organic Polymers |
title_fullStr | Evaluation of Strength Properties of Sand Modified with Organic Polymers |
title_full_unstemmed | Evaluation of Strength Properties of Sand Modified with Organic Polymers |
title_short | Evaluation of Strength Properties of Sand Modified with Organic Polymers |
title_sort | evaluation of strength properties of sand modified with organic polymers |
topic | Article |
url | https://www.ncbi.nlm.nih.gov/pmc/articles/PMC6414931/ https://www.ncbi.nlm.nih.gov/pubmed/30966322 http://dx.doi.org/10.3390/polym10030287 |
work_keys_str_mv | AT liujin evaluationofstrengthpropertiesofsandmodifiedwithorganicpolymers AT baiyuxia evaluationofstrengthpropertiesofsandmodifiedwithorganicpolymers AT songzezhuo evaluationofstrengthpropertiesofsandmodifiedwithorganicpolymers AT luyi evaluationofstrengthpropertiesofsandmodifiedwithorganicpolymers AT qianwei evaluationofstrengthpropertiesofsandmodifiedwithorganicpolymers AT kanungodebiprasanna evaluationofstrengthpropertiesofsandmodifiedwithorganicpolymers |