Specific Mixing Energy of Cemented Paste Backfill, Part I: Laboratory Determination and Influence on the Consistency

Slump determination is widely used to assess the consistency and transportability of fresh cemented paste backfill (CPB). CPB consistency can depend on the mixing procedure for CPB preparation. In this paper, a method was developed to determine the specific mixing energy (SME) that is dissipated dur...

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Autores principales:	Reagan Kabanga Dikonda, Mamert Mbonimpa, Tikou Belem
Formato:	article
Lenguaje:	EN
Publicado:	MDPI AG 2021
Materias:	cemented paste backfill mixing time mixing speed mixing load mass specific mixing energy slump Mineralogy QE351-399.2
Acceso en línea:	https://doaj.org/article/5a8103f7fd1946df9c786bffc01c84f3
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spelling	oai:doaj.org-article:5a8103f7fd1946df9c786bffc01c84f32021-11-25T18:25:55ZSpecific Mixing Energy of Cemented Paste Backfill, Part I: Laboratory Determination and Influence on the Consistency10.3390/min111111652075-163Xhttps://doaj.org/article/5a8103f7fd1946df9c786bffc01c84f32021-10-01T00:00:00Zhttps://www.mdpi.com/2075-163X/11/11/1165https://doaj.org/toc/2075-163XSlump determination is widely used to assess the consistency and transportability of fresh cemented paste backfill (CPB). CPB consistency can depend on the mixing procedure for CPB preparation. In this paper, a method was developed to determine the specific mixing energy (SME) that is dissipated during the preparation of CPB mixtures and to analyze its effect on CPB consistency. For this purpose, CPB recipes were prepared using two tailings and the mixing parameters (mixing time and speed and load mass) were successively varied. SME was determined for each mixture using a power meter equipped with an energy recording system mounted on a laboratory Omcan mixer. Slump was also determined for each mixture. A semi-empirical model was then developed to predict SME as a function of the mixing parameters. Results showed that predicted SME compared well with measured SME during CPB preparation. Results also showed that slump increased with increasing SME. The influence of SME on the rheological and mechanical properties of CPB and practical applications are presented in a companion paper.Reagan Kabanga DikondaMamert MbonimpaTikou BelemMDPI AGarticlecemented paste backfillmixing timemixing speedmixing load massspecific mixing energyslumpMineralogyQE351-399.2ENMinerals, Vol 11, Iss 1165, p 1165 (2021)
institution	DOAJ
collection	DOAJ
language	EN
topic	cemented paste backfill mixing time mixing speed mixing load mass specific mixing energy slump Mineralogy QE351-399.2
spellingShingle	cemented paste backfill mixing time mixing speed mixing load mass specific mixing energy slump Mineralogy QE351-399.2 Reagan Kabanga Dikonda Mamert Mbonimpa Tikou Belem Specific Mixing Energy of Cemented Paste Backfill, Part I: Laboratory Determination and Influence on the Consistency
description	Slump determination is widely used to assess the consistency and transportability of fresh cemented paste backfill (CPB). CPB consistency can depend on the mixing procedure for CPB preparation. In this paper, a method was developed to determine the specific mixing energy (SME) that is dissipated during the preparation of CPB mixtures and to analyze its effect on CPB consistency. For this purpose, CPB recipes were prepared using two tailings and the mixing parameters (mixing time and speed and load mass) were successively varied. SME was determined for each mixture using a power meter equipped with an energy recording system mounted on a laboratory Omcan mixer. Slump was also determined for each mixture. A semi-empirical model was then developed to predict SME as a function of the mixing parameters. Results showed that predicted SME compared well with measured SME during CPB preparation. Results also showed that slump increased with increasing SME. The influence of SME on the rheological and mechanical properties of CPB and practical applications are presented in a companion paper.
format	article
author	Reagan Kabanga Dikonda Mamert Mbonimpa Tikou Belem
author_facet	Reagan Kabanga Dikonda Mamert Mbonimpa Tikou Belem
author_sort	Reagan Kabanga Dikonda
title	Specific Mixing Energy of Cemented Paste Backfill, Part I: Laboratory Determination and Influence on the Consistency
title_short	Specific Mixing Energy of Cemented Paste Backfill, Part I: Laboratory Determination and Influence on the Consistency
title_full	Specific Mixing Energy of Cemented Paste Backfill, Part I: Laboratory Determination and Influence on the Consistency
title_fullStr	Specific Mixing Energy of Cemented Paste Backfill, Part I: Laboratory Determination and Influence on the Consistency
title_full_unstemmed	Specific Mixing Energy of Cemented Paste Backfill, Part I: Laboratory Determination and Influence on the Consistency
title_sort	specific mixing energy of cemented paste backfill, part i: laboratory determination and influence on the consistency
publisher	MDPI AG
publishDate	2021
url	https://doaj.org/article/5a8103f7fd1946df9c786bffc01c84f3
work_keys_str_mv	AT reagankabangadikonda specificmixingenergyofcementedpastebackfillpartilaboratorydeterminationandinfluenceontheconsistency AT mamertmbonimpa specificmixingenergyofcementedpastebackfillpartilaboratorydeterminationandinfluenceontheconsistency AT tikoubelem specificmixingenergyofcementedpastebackfillpartilaboratorydeterminationandinfluenceontheconsistency
_version_	1718411133577068544

Specific Mixing Energy of Cemented Paste Backfill, Part I: Laboratory Determination and Influence on the Consistency

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