Physicochemical evaluation of Portland cement produced in Brazil via X-ray fluorescence and mechanical strength
DOI:
https://doi.org/10.5433/1679-0375.2020v41n1p3Keywords:
EDXRF. Portland Cement. Mechanical resistance. Bogue’s potential.Abstract
Portland cement is the basic component of concrete. X-ray fluorescence spectroscopy is an established analytical technique used in cement plants throughout the world. A comparative study of the elemental constituents presents in Portland cements produced in Brazil was carried out via EDXRF analyses. The main elements identified and quantified in cement samples were Al, Ca, Fe, K, Si, S, Ti, Mn, Zn and Sr. The main components of cement are lime (CaO), silica (SiO2), alumina (Al2O3), iron oxide (Fe2O3), magnesia (MgO), alkalis (Na2O and K2O ) and sulfates (SO3). The components C3S, C2S, C3A and C4AF were calculated via Bogue’s formula. Mortar with water, cement and sand was produced for each cement brand, and analyses were performed in order to evaluate the mechanical compressive strength. The bodies were broken after curing over the following timeframes: 1, 3, 7, 28 and 91 days. The results from mechanical tests were correlated with the components found in the different cement brands. Our results indicate that initial compressive strength can vary greatly from one brand to another and the values for the Bogue’s potentials show large differences for C3S and C2S. It was showed by strength tests, how it is possible to predict the behavior of mortars made with these cements. Cements proved to be good for the manufacture of mortars and meet the Brazilian’s specifications.
Downloads
References
ABELMANN, R. A.; SMALLBONE, A. H. Principles of X-ray analysis and instrument design for cement production and slurry process control applications: Miner. Process, Basileia, v. 8, n. 7, p. 10-16, 1967.
ABNT - ASSOCIAÇÃO BRASILEIRA DE NORMAS TÉCNICAS. NBR 7215: cimento Portland: determinação da resistência à compressão. Rio de Janeiro: ABNT, 1996.
BAHJAT, R. J. M.; LATIF, K. M. Analysis of Iraqi cement by X-ray Fluorescence. Iraqi J. Chem., Al-Hillah, v. 27, n. 4, p. 1-14, 2001.
BOGUE, R. H. The chemistry of Portland cement. New York: Reinhold Publishing, 1947. 572p.
COOPER, J. A.; WHEELER, B. D.; BARTELL, D. M. Rapid multielement analysis of Portland cement, raw mix and raw materials. J. Chem. Technol. Biotechnol., Oxford, v. 7, n. 2, p. 68-74, 1976.
ELBAGERMIA, M. A.; ALAJTALA, A. I.; ALKERZAB, M. Chemical analysis of available Portland cement in libyan market using X-Ray Fluorescence. Int. J. Chem., Mol., Nucl., Mat. Metall. Eng., [S. l.], v. 8, n. 1, p. 73-75, 2014.
FERRARI, F. Cenno storico sui legante idraulici. II Cemento, [S. l.], v. 65, n. 762, p. 147-50, 1968.
FRANCO JUNIOR, J. O. Estudo comparativo de métodos analíticos para determinação de Fe e Ti em cimento Portland. 1999. Dissertação (Mestrado) – Universidade Federal da Bahia, Bahia, 1999.
GOBBO, L. A. Os compostos do clínquer Portland: sua caracterização por difração de raios-X e quantificação por refinamento de Rietveld. 2003. Dissertação (Mestrado) - Universidade de São Paulo, São Paulo, 2003.
KAEFER, L. F. A evolução do concreto armado. São Paulo: Unesp, 1998. PEF 5707 – Concepção, projeto e realização das estruturas: aspectos históricos. Available: <http://wwwp.feb.unesp.br/lutt/Concreto%20Protendido/HistoriadoConcreto.pdf> Accessed: 10 Nov. 2019.
MARCIANO JUNIOR, E.; ZAMPIERI, V. A.; CENTURIONE, S. L. Considerations about the quantitative study of Portland cement clinquer through reflected light microscopy. In: INTERNATIONAL CONFERENCE ON CEMENT MICROSCOPY, 9., 1987, Reno. Proceedings [. . . ]. Reno: ICMA, 1987. p. 175-182.
MINDLESS, S.; YOUNG, J. F.; DARWIN, D. Concrete. Nova Jersey: Prentice Hall, 2003. MOLARI, R.; ENDO, L. Y.; APPOLONI, C. R.; MELQUIADES, F. L.; PORTEZAN FILHO, O. PARREIRA, P. S. Portable EDXRF and principal component analysis for inorganic element determination and provenance of eye shadows. Semina: Ciências Exatas e Tecnológicas, Londrina, v. 40, n. 2, p. 135-144, 2019.DOI: http://doi.org/10.5433/1679-0375.2019v40n2p135
STANTON, J. M. Galton, Pearson, and the peas: a brief history of linear regression for statistics instructors. Journal of Statistics Education, Raleigh, v. 9, n. 3, p. 1-13, 2001. DOI: https://doi.org/10.1080/10691898.2001.11910537
TAYLOR, H. F. W. Cement chemistry. London: Academic Press, 1990.
UCHIDA, K.; TOMINAGU, H.; IMAMURA, H. Lightelements simultaneous analyzer by alpha and X-ray sources, for cement raw mix control. Radioisotope Instruments Industry Geophysics, Vienna, v. 1, p. 113-26, 1966.
VIEIRA, Y.; LINCK, M. R.; GOBBI, D. L.; MENEZES, L. B.; VILASBÔAS, F. S. Influence of Compression on Soil Characterization by X Ray Fluorescence. Semina: Ciências Exatas e Tecnológicas, Londrina, v. 39, n. 2, p. 125-132, 2018. DOI: http://doi.org/10.5433/1679-0375.2018v39n2p125
WEST, M.; ELLIS, A. T.; POTTS, P. J.; STRELI C.; VANHOOF, C.; WOBRAUSCHEK, P. Atomic spectrometry update: a review of advances in X-ray fluorescence spectrometry and its applications. J. Anal. At. Spectrom, London, v. 31, p. 1706-1755, 2016. DOI: https://doi.org/10.1039/C6JA90034H
Downloads
Published
How to Cite
Issue
Section
License
Copyright (c) 2020 Semina Ciências Exatas e Tecnológicas
This work is licensed under a Creative Commons Attribution-NonCommercial 4.0 International License.
The Copyright Declaration for articles published in this journal is the author’s right. Since manuscripts are published in an open access Journal, they are free to use, with their own attributions, in educational and non-commercial applications. The Journal has the right to make, in the original document, changes regarding linguistic norms, orthography, and grammar, with the purpose of ensuring the standard norms of the language and the credibility of the Journal. It will, however, respect the writing style of the authors. When necessary, conceptual changes, corrections, or suggestions will be forwarded to the authors. In such cases, the manuscript shall be subjected to a new evaluation after revision. Responsibility for the opinions expressed in the manuscripts lies entirely with the authors.
This journal is licensed with a license Creative Commons Attribution-NonCommercial 4.0 International.