Natural Fluorite from Órgiva Deposit (Spain). A Study of Its Pozzolanic and Mechanical Properties

This work presents the results of the partial substitution of Portland cement (PC) by natural fluorite (NF) and calcined fluorite (CF) in mortars, at 10%, 25% and 40%. To meet these objectives, a sample of fluorite was initially studied by XRD, SEM and Raman Spectroscopy (RS). A chemical quality ana...

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Autores principales:	Domingo A. Martín, Jorge Luis Costafreda, Esteban Estévez, Leticia Presa, Alicia Calvo, Ricardo Castedo, Miguel Ángel Sanjuán, José Luis Parra, Rafael Navarro
Formato:	article
Lenguaje:	EN
Publicado:	MDPI AG 2021
Materias:	fluorite cement pozzolan mortar mechanical strength reduction of CO<sub>2</sub> emissions Crystallography QD901-999
Acceso en línea:	https://doaj.org/article/9dbf541828364b7babdd1296fa2e962e
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spelling	oai:doaj.org-article:9dbf541828364b7babdd1296fa2e962e2021-11-25T17:18:58ZNatural Fluorite from Órgiva Deposit (Spain). A Study of Its Pozzolanic and Mechanical Properties10.3390/cryst111113672073-4352https://doaj.org/article/9dbf541828364b7babdd1296fa2e962e2021-11-01T00:00:00Zhttps://www.mdpi.com/2073-4352/11/11/1367https://doaj.org/toc/2073-4352This work presents the results of the partial substitution of Portland cement (PC) by natural fluorite (NF) and calcined fluorite (CF) in mortars, at 10%, 25% and 40%. To meet these objectives, a sample of fluorite was initially studied by XRD, SEM and Raman Spectroscopy (RS). A chemical quality analysis (CQA) and a chemical pozzolanicity test (CPT) at 8 and 15 days were carried out in a second stage to establish the pozzolanic properties of the investigated sample. Finally, a mechanical compressive strength test (MCST) at 7, 28 and 90 days was carried out on specimens made up with PC/NF and PC/CF mixes, at a ratio of 10%, 25% and 40%. XRD, SEM and RS results indicated fluorite as the major mineralogical phase. The CPT and CQA showed an increase in the pozzolanicity of the samples from 8 to 15 days. The MCST showed an increase in compressive strength from 7 to 90 days for both PC/NF and PC/CF specimens. The results obtained establish that fluorite produces positive effects in the mortar and contributes to the gain of mechanical strength over time, being a suitable material for the manufacture of cements with pozzolanic addition with a reduction of CO<sub>2</sub> emissions, and by reducing the energy costs of production.Domingo A. MartínJorge Luis CostafredaEsteban EstévezLeticia PresaAlicia CalvoRicardo CastedoMiguel Ángel SanjuánJosé Luis ParraRafael NavarroMDPI AGarticlefluoritecementpozzolanmortarmechanical strengthreduction of CO<sub>2</sub> emissionsCrystallographyQD901-999ENCrystals, Vol 11, Iss 1367, p 1367 (2021)
institution	DOAJ
collection	DOAJ
language	EN
topic	fluorite cement pozzolan mortar mechanical strength reduction of CO<sub>2</sub> emissions Crystallography QD901-999
spellingShingle	fluorite cement pozzolan mortar mechanical strength reduction of CO<sub>2</sub> emissions Crystallography QD901-999 Domingo A. Martín Jorge Luis Costafreda Esteban Estévez Leticia Presa Alicia Calvo Ricardo Castedo Miguel Ángel Sanjuán José Luis Parra Rafael Navarro Natural Fluorite from Órgiva Deposit (Spain). A Study of Its Pozzolanic and Mechanical Properties
description	This work presents the results of the partial substitution of Portland cement (PC) by natural fluorite (NF) and calcined fluorite (CF) in mortars, at 10%, 25% and 40%. To meet these objectives, a sample of fluorite was initially studied by XRD, SEM and Raman Spectroscopy (RS). A chemical quality analysis (CQA) and a chemical pozzolanicity test (CPT) at 8 and 15 days were carried out in a second stage to establish the pozzolanic properties of the investigated sample. Finally, a mechanical compressive strength test (MCST) at 7, 28 and 90 days was carried out on specimens made up with PC/NF and PC/CF mixes, at a ratio of 10%, 25% and 40%. XRD, SEM and RS results indicated fluorite as the major mineralogical phase. The CPT and CQA showed an increase in the pozzolanicity of the samples from 8 to 15 days. The MCST showed an increase in compressive strength from 7 to 90 days for both PC/NF and PC/CF specimens. The results obtained establish that fluorite produces positive effects in the mortar and contributes to the gain of mechanical strength over time, being a suitable material for the manufacture of cements with pozzolanic addition with a reduction of CO<sub>2</sub> emissions, and by reducing the energy costs of production.
format	article
author	Domingo A. Martín Jorge Luis Costafreda Esteban Estévez Leticia Presa Alicia Calvo Ricardo Castedo Miguel Ángel Sanjuán José Luis Parra Rafael Navarro
author_facet	Domingo A. Martín Jorge Luis Costafreda Esteban Estévez Leticia Presa Alicia Calvo Ricardo Castedo Miguel Ángel Sanjuán José Luis Parra Rafael Navarro
author_sort	Domingo A. Martín
title	Natural Fluorite from Órgiva Deposit (Spain). A Study of Its Pozzolanic and Mechanical Properties
title_short	Natural Fluorite from Órgiva Deposit (Spain). A Study of Its Pozzolanic and Mechanical Properties
title_full	Natural Fluorite from Órgiva Deposit (Spain). A Study of Its Pozzolanic and Mechanical Properties
title_fullStr	Natural Fluorite from Órgiva Deposit (Spain). A Study of Its Pozzolanic and Mechanical Properties
title_full_unstemmed	Natural Fluorite from Órgiva Deposit (Spain). A Study of Its Pozzolanic and Mechanical Properties
title_sort	natural fluorite from órgiva deposit (spain). a study of its pozzolanic and mechanical properties
publisher	MDPI AG
publishDate	2021
url	https://doaj.org/article/9dbf541828364b7babdd1296fa2e962e
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Natural Fluorite from Órgiva Deposit (Spain). A Study of Its Pozzolanic and Mechanical Properties

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