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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| Format: | Article |
| Language: | English |
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MDPI AG
2021-11-01
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| Series: | Crystals |
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| Online Access: | https://www.mdpi.com/2073-4352/11/11/1367 |
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| 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 |
| collection | DOAJ |
| 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. |
| first_indexed | 2024-03-10T05:35:39Z |
| format | Article |
| id | doaj.art-9dbf541828364b7babdd1296fa2e962e |
| institution | Directory Open Access Journal |
| issn | 2073-4352 |
| language | English |
| last_indexed | 2024-03-10T05:35:39Z |
| publishDate | 2021-11-01 |
| publisher | MDPI AG |
| record_format | Article |
| series | Crystals |
| spelling | doaj.art-9dbf541828364b7babdd1296fa2e962e2023-11-22T22:58:33ZengMDPI AGCrystals2073-43522021-11-011111136710.3390/cryst11111367Natural Fluorite from Órgiva Deposit (Spain). A Study of Its Pozzolanic and Mechanical PropertiesDomingo A. Martín0Jorge Luis Costafreda1Esteban Estévez2Leticia Presa3Alicia Calvo4Ricardo Castedo5Miguel Ángel Sanjuán6José Luis Parra7Rafael Navarro8Escuela Técnica Superior de Ingenieros de Minas y Energía, Universidad Politécnica de Madrid, C/Ríos Rosas, 21, 28003 Madrid, SpainEscuela Técnica Superior de Ingenieros de Minas y Energía, Universidad Politécnica de Madrid, C/Ríos Rosas, 21, 28003 Madrid, SpainLaboratorio Oficial para Ensayos de Materiales de Construcción (LOEMCO), C/Eric Kandell, 1, 28906 Madrid, SpainEscuela Técnica Superior de Ingenieros de Minas y Energía, Universidad Politécnica de Madrid, C/Ríos Rosas, 21, 28003 Madrid, SpainEscuela Técnica Superior de Ingenieros de Minas y Energía, Universidad Politécnica de Madrid, C/Ríos Rosas, 21, 28003 Madrid, SpainEscuela Técnica Superior de Ingenieros de Minas y Energía, Universidad Politécnica de Madrid, C/Ríos Rosas, 21, 28003 Madrid, SpainDepartment of Science and Technology of Building Materials, Civil Engineering School, Technical University of Madrid, 28040 Madrid, SpainEscuela Técnica Superior de Ingenieros de Minas y Energía, Universidad Politécnica de Madrid, C/Ríos Rosas, 21, 28003 Madrid, SpainMinera de Órgiva, S.L., Mina Carriles, Polígono 13, Parcela 1, 18400 Órgiva, SpainThis 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.https://www.mdpi.com/2073-4352/11/11/1367fluoritecementpozzolanmortarmechanical strengthreduction of CO<sub>2</sub> emissions |
| spellingShingle | 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 Crystals fluorite cement pozzolan mortar mechanical strength reduction of CO<sub>2</sub> emissions |
| title | 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_short | Natural Fluorite from Órgiva Deposit (Spain). A Study of Its Pozzolanic and Mechanical Properties |
| title_sort | natural fluorite from orgiva deposit spain a study of its pozzolanic and mechanical properties |
| topic | fluorite cement pozzolan mortar mechanical strength reduction of CO<sub>2</sub> emissions |
| url | https://www.mdpi.com/2073-4352/11/11/1367 |
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