Behavior of CFRP-Confined Sand-Based Material Columns under Axial Compression

This paper presents an innovative pumpable standing support designed for underground mines located in the arid and semi-arid deserts of the Gobi region with a shortage of water resources. The exterior shell of this pumpable standing support is made of carbon fiber-reinforced polymer (CFRP), while th...

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Autores principales:	Guodong Li, Honglin Liu, Wentao Deng, Hongzhi Wang, Haitian Yan
Formato:	article
Lenguaje:	EN
Publicado:	MDPI AG 2021
Materias:	desert sand high-water material fiber-reinforced polymer composite structure underground mines Organic chemistry QD241-441
Acceso en línea:	https://doaj.org/article/b82fb71d41784f8e904d09c162dceffb
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spelling	oai:doaj.org-article:b82fb71d41784f8e904d09c162dceffb2021-11-25T18:49:12ZBehavior of CFRP-Confined Sand-Based Material Columns under Axial Compression10.3390/polym132239942073-4360https://doaj.org/article/b82fb71d41784f8e904d09c162dceffb2021-11-01T00:00:00Zhttps://www.mdpi.com/2073-4360/13/22/3994https://doaj.org/toc/2073-4360This paper presents an innovative pumpable standing support designed for underground mines located in the arid and semi-arid deserts of the Gobi region with a shortage of water resources. The exterior shell of this pumpable standing support is made of carbon fiber-reinforced polymer (CFRP), while the infill material is a sand-based material (SBM). As the novel backfill material, SBM is the combination of high-water cementing material and desert sand. A series of experimental tests were conducted to obtain the mechanical response mechanism of this novel pumpable standing support under uniaxial compression. Test variables investigated in this research covered the water-to-powder ratio of the cementing material, the mixing amount of sand, and the thickness of the CFRP tube. Test results confirmed that the CFRP-confined SBM columns exhibited typical strain hardening behavior with the acceptable axial deformation. It was also demonstrated that using high-strength cementing material, a thicker CFRP tube, and a high mixing amount of sand effectively increased the bearing capacity of the CFRP-confined SBM column. Except for the exemplary structural behavior, the consumption of high-water cementing materials of the novel pumpable standing support is smaller than that of its counterparts made of pure cementing material, when specimens with the same mechanical performance are compared.Guodong LiHonglin LiuWentao DengHongzhi WangHaitian YanMDPI AGarticledesert sandhigh-water materialfiber-reinforced polymercomposite structureunderground minesOrganic chemistryQD241-441ENPolymers, Vol 13, Iss 3994, p 3994 (2021)
institution	DOAJ
collection	DOAJ
language	EN
topic	desert sand high-water material fiber-reinforced polymer composite structure underground mines Organic chemistry QD241-441
spellingShingle	desert sand high-water material fiber-reinforced polymer composite structure underground mines Organic chemistry QD241-441 Guodong Li Honglin Liu Wentao Deng Hongzhi Wang Haitian Yan Behavior of CFRP-Confined Sand-Based Material Columns under Axial Compression
description	This paper presents an innovative pumpable standing support designed for underground mines located in the arid and semi-arid deserts of the Gobi region with a shortage of water resources. The exterior shell of this pumpable standing support is made of carbon fiber-reinforced polymer (CFRP), while the infill material is a sand-based material (SBM). As the novel backfill material, SBM is the combination of high-water cementing material and desert sand. A series of experimental tests were conducted to obtain the mechanical response mechanism of this novel pumpable standing support under uniaxial compression. Test variables investigated in this research covered the water-to-powder ratio of the cementing material, the mixing amount of sand, and the thickness of the CFRP tube. Test results confirmed that the CFRP-confined SBM columns exhibited typical strain hardening behavior with the acceptable axial deformation. It was also demonstrated that using high-strength cementing material, a thicker CFRP tube, and a high mixing amount of sand effectively increased the bearing capacity of the CFRP-confined SBM column. Except for the exemplary structural behavior, the consumption of high-water cementing materials of the novel pumpable standing support is smaller than that of its counterparts made of pure cementing material, when specimens with the same mechanical performance are compared.
format	article
author	Guodong Li Honglin Liu Wentao Deng Hongzhi Wang Haitian Yan
author_facet	Guodong Li Honglin Liu Wentao Deng Hongzhi Wang Haitian Yan
author_sort	Guodong Li
title	Behavior of CFRP-Confined Sand-Based Material Columns under Axial Compression
title_short	Behavior of CFRP-Confined Sand-Based Material Columns under Axial Compression
title_full	Behavior of CFRP-Confined Sand-Based Material Columns under Axial Compression
title_fullStr	Behavior of CFRP-Confined Sand-Based Material Columns under Axial Compression
title_full_unstemmed	Behavior of CFRP-Confined Sand-Based Material Columns under Axial Compression
title_sort	behavior of cfrp-confined sand-based material columns under axial compression
publisher	MDPI AG
publishDate	2021
url	https://doaj.org/article/b82fb71d41784f8e904d09c162dceffb
work_keys_str_mv	AT guodongli behaviorofcfrpconfinedsandbasedmaterialcolumnsunderaxialcompression AT honglinliu behaviorofcfrpconfinedsandbasedmaterialcolumnsunderaxialcompression AT wentaodeng behaviorofcfrpconfinedsandbasedmaterialcolumnsunderaxialcompression AT hongzhiwang behaviorofcfrpconfinedsandbasedmaterialcolumnsunderaxialcompression AT haitianyan behaviorofcfrpconfinedsandbasedmaterialcolumnsunderaxialcompression
_version_	1718410671040757760

Behavior of CFRP-Confined Sand-Based Material Columns under Axial Compression

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