Full text
Preview |
PDF
- Requires a PDF viewer, such as GSview, Xpdf or Adobe Acrobat Reader
Download (1MB) | Preview |
Martín Sánchez, Domingo Alfonso ORCID: https://orcid.org/0000-0002-3179-2245, Costafreda Mustelier, Jorge Luis
ORCID: https://orcid.org/0000-0002-5125-4575, Estévez Fernández, Esteban, Presa Madrigal, Leticia
ORCID: https://orcid.org/0000-0002-4165-0611, Calvo Paz, Alicia, Castedo Ruiz, Ricardo
ORCID: https://orcid.org/0000-0002-5725-6272, Sanjuán, Miguel Ángel, Parra y Alfaro, José Luis
ORCID: https://orcid.org/0000-0002-6979-5986 and Navarro, Rafael
(2021).
Natural Fluorite from Órgiva Deposit (Spain). A Study of Its Pozzolanic and Mechanical Properties.
"Crystals", v. 11
(n. 11);
p. 1367.
ISSN 2073-4352.
https://doi.org/10.3390/cryst11111367.
Title: | Natural Fluorite from Órgiva Deposit (Spain). A Study of Its Pozzolanic and Mechanical Properties |
---|---|
Author/s: |
|
Item Type: | Article |
Título de Revista/Publicación: | Crystals |
Date: | 10 November 2021 |
ISSN: | 2073-4352 |
Volume: | 11 |
Subjects: | |
Freetext Keywords: | Fluorite; cement; pozzolan; mortar; mechanical strength; reduction of CO2 emissions |
Faculty: | E.T.S.I. de Minas y Energía (UPM) |
Department: | Ingeniería Geológica y Minera |
Creative Commons Licenses: | None |
Preview |
PDF
- Requires a PDF viewer, such as GSview, Xpdf or Adobe Acrobat Reader
Download (1MB) | Preview |
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 CO2 emissions, and by reducing the energy costs of production.
Item ID: | 69429 |
---|---|
DC Identifier: | https://oa.upm.es/69429/ |
OAI Identifier: | oai:oa.upm.es:69429 |
DOI: | 10.3390/cryst11111367 |
Official URL: | https://www.mdpi.com/2073-4352/11/11/1367 |
Deposited by: | Dr. Jorge Luis Costafreda Mustelier |
Deposited on: | 13 Jan 2022 08:19 |
Last Modified: | 13 Jan 2022 08:19 |