Experimental investigation into the effects of composition and microstructure on the tensile properties and failure characteristics of different gypsum rocks

Abstract The present work investigated the differences in the composition and internal microstructure of four types gypsum rock—fiber gypsum, transparent gypsum, alabaster, and ordinary gypsum by X-ray fluorescence spectrometry, X-ray diffraction, scanning electron microscope and Brazilian split tes...

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Autores principales:	Hongfa Ma, Shaojie Chen, Yanqi Song, Dawei Yin, Xiangshang Li, Xiaolong Li
Formato:	article
Lenguaje:	EN
Publicado:	Nature Portfolio 2021
Materias:	Medicine R Science Q
Acceso en línea:	https://doaj.org/article/f1ffb17683b14266946e4b0881c21ce4
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spelling	oai:doaj.org-article:f1ffb17683b14266946e4b0881c21ce42021-12-02T16:14:17ZExperimental investigation into the effects of composition and microstructure on the tensile properties and failure characteristics of different gypsum rocks10.1038/s41598-021-93947-62045-2322https://doaj.org/article/f1ffb17683b14266946e4b0881c21ce42021-07-01T00:00:00Zhttps://doi.org/10.1038/s41598-021-93947-6https://doaj.org/toc/2045-2322Abstract The present work investigated the differences in the composition and internal microstructure of four types gypsum rock—fiber gypsum, transparent gypsum, alabaster, and ordinary gypsum by X-ray fluorescence spectrometry, X-ray diffraction, scanning electron microscope and Brazilian split test, and analyzed its effects on the tensile strength and fracture characteristics of gypsum rock. For alabaster, fiber gypsum, transparent gypsum, and ordinary gypsum, CaSO4·2H2O is the main component with 72.78%, 72.72%, 72.57%, and 71.51% content, and tensile strength of 1.79, 2.22, 3.22, and 4.35 MPa, respectively. In addition, the fracture line is arc-shaped, vertical, and zigzag for fiber gypsum, ordinary and transparent gypsums, and alabaster, respectively. On the microscopic level, fiber gypsum has an evident striated structure while the gradual increased pore development for alabaster, transparent gypsum, and ordinary gypsum. Gypsum rock has an obvious layered crystal structure with the increase of CaSO4·2H2O, contributing to the phenomenon with a larger grain size and lower tensile strength. In addition, the number of particles for alabaster, transparent gypsum, and ordinary gypsum increased in turn, while their particle size decreased uniformly, indicating that the lower CaSO4·2H2O content, the more sufficient energy accumulation and release. This paper can provide a theoretical basis for the analysis of the mechanical properties of rocks with different mineral composition and contribute to the design for different ore grades mining.Hongfa MaShaojie ChenYanqi SongDawei YinXiangshang LiXiaolong LiNature PortfolioarticleMedicineRScienceQENScientific Reports, Vol 11, Iss 1, Pp 1-13 (2021)
institution	DOAJ
collection	DOAJ
language	EN
topic	Medicine R Science Q
spellingShingle	Medicine R Science Q Hongfa Ma Shaojie Chen Yanqi Song Dawei Yin Xiangshang Li Xiaolong Li Experimental investigation into the effects of composition and microstructure on the tensile properties and failure characteristics of different gypsum rocks
description	Abstract The present work investigated the differences in the composition and internal microstructure of four types gypsum rock—fiber gypsum, transparent gypsum, alabaster, and ordinary gypsum by X-ray fluorescence spectrometry, X-ray diffraction, scanning electron microscope and Brazilian split test, and analyzed its effects on the tensile strength and fracture characteristics of gypsum rock. For alabaster, fiber gypsum, transparent gypsum, and ordinary gypsum, CaSO4·2H2O is the main component with 72.78%, 72.72%, 72.57%, and 71.51% content, and tensile strength of 1.79, 2.22, 3.22, and 4.35 MPa, respectively. In addition, the fracture line is arc-shaped, vertical, and zigzag for fiber gypsum, ordinary and transparent gypsums, and alabaster, respectively. On the microscopic level, fiber gypsum has an evident striated structure while the gradual increased pore development for alabaster, transparent gypsum, and ordinary gypsum. Gypsum rock has an obvious layered crystal structure with the increase of CaSO4·2H2O, contributing to the phenomenon with a larger grain size and lower tensile strength. In addition, the number of particles for alabaster, transparent gypsum, and ordinary gypsum increased in turn, while their particle size decreased uniformly, indicating that the lower CaSO4·2H2O content, the more sufficient energy accumulation and release. This paper can provide a theoretical basis for the analysis of the mechanical properties of rocks with different mineral composition and contribute to the design for different ore grades mining.
format	article
author	Hongfa Ma Shaojie Chen Yanqi Song Dawei Yin Xiangshang Li Xiaolong Li
author_facet	Hongfa Ma Shaojie Chen Yanqi Song Dawei Yin Xiangshang Li Xiaolong Li
author_sort	Hongfa Ma
title	Experimental investigation into the effects of composition and microstructure on the tensile properties and failure characteristics of different gypsum rocks
title_short	Experimental investigation into the effects of composition and microstructure on the tensile properties and failure characteristics of different gypsum rocks
title_full	Experimental investigation into the effects of composition and microstructure on the tensile properties and failure characteristics of different gypsum rocks
title_fullStr	Experimental investigation into the effects of composition and microstructure on the tensile properties and failure characteristics of different gypsum rocks
title_full_unstemmed	Experimental investigation into the effects of composition and microstructure on the tensile properties and failure characteristics of different gypsum rocks
title_sort	experimental investigation into the effects of composition and microstructure on the tensile properties and failure characteristics of different gypsum rocks
publisher	Nature Portfolio
publishDate	2021
url	https://doaj.org/article/f1ffb17683b14266946e4b0881c21ce4
work_keys_str_mv	AT hongfama experimentalinvestigationintotheeffectsofcompositionandmicrostructureonthetensilepropertiesandfailurecharacteristicsofdifferentgypsumrocks AT shaojiechen experimentalinvestigationintotheeffectsofcompositionandmicrostructureonthetensilepropertiesandfailurecharacteristicsofdifferentgypsumrocks AT yanqisong experimentalinvestigationintotheeffectsofcompositionandmicrostructureonthetensilepropertiesandfailurecharacteristicsofdifferentgypsumrocks AT daweiyin experimentalinvestigationintotheeffectsofcompositionandmicrostructureonthetensilepropertiesandfailurecharacteristicsofdifferentgypsumrocks AT xiangshangli experimentalinvestigationintotheeffectsofcompositionandmicrostructureonthetensilepropertiesandfailurecharacteristicsofdifferentgypsumrocks AT xiaolongli experimentalinvestigationintotheeffectsofcompositionandmicrostructureonthetensilepropertiesandfailurecharacteristicsofdifferentgypsumrocks
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Experimental investigation into the effects of composition and microstructure on the tensile properties and failure characteristics of different gypsum rocks

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