Volcanic Tuff as Secondary Raw Material in the Production of Clay Bricks

The present work examines an innovative manufacturing technique for fired clay bricks, using tuff as a secondary raw material. Samples were made of clay and tuff (0–30 wt.%) fired at 900 to 1100 °C. The chemical and mineralogical compositions and physical and thermal analyses of raw materials were i...

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Autores principales:	Nicoleta Cobîrzan, Gyorgy Thalmaier, Anca-Andreea Balog, Horia Constantinescu, Andrei Ceclan, Mircea Nasui
Formato:	article
Lenguaje:	EN
Publicado:	MDPI AG 2021
Materias:	brick clay tuff raw materials waste Technology T Electrical engineering. Electronics. Nuclear engineering TK1-9971 Engineering (General). Civil engineering (General) TA1-2040 Microscopy QH201-278.5 Descriptive and experimental mechanics QC120-168.85
Acceso en línea:	https://doaj.org/article/df247d31dc604c33a8dfd328cafe6336
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spelling	oai:doaj.org-article:df247d31dc604c33a8dfd328cafe63362021-11-25T18:14:21ZVolcanic Tuff as Secondary Raw Material in the Production of Clay Bricks10.3390/ma142268721996-1944https://doaj.org/article/df247d31dc604c33a8dfd328cafe63362021-11-01T00:00:00Zhttps://www.mdpi.com/1996-1944/14/22/6872https://doaj.org/toc/1996-1944The present work examines an innovative manufacturing technique for fired clay bricks, using tuff as a secondary raw material. Samples were made of clay and tuff (0–30 wt.%) fired at 900 to 1100 °C. The chemical and mineralogical compositions and physical and thermal analyses of raw materials were investigated by using SEM-EDS, RX and DTA-TG curves. The samples were analysed from the mineralogical, technological and mechanical points of view. The result show that the tuff’s presence in the clay mixtures considerably reduced the shrinkage of the product during the firing process, and the manufactured samples were of excellent quality. The compressive strength of the bricks varied from 5–35.3MPa, being influenced by the tuff content, clay matrix properties and firing temperatures. Finally, the heat demand for increasing the temperature from room to the firing temperature of the sample with 10% tuff content was 22%.Nicoleta CobîrzanGyorgy ThalmaierAnca-Andreea BalogHoria ConstantinescuAndrei CeclanMircea NasuiMDPI AGarticlebrickclaytuffraw materialswasteTechnologyTElectrical engineering. Electronics. Nuclear engineeringTK1-9971Engineering (General). Civil engineering (General)TA1-2040MicroscopyQH201-278.5Descriptive and experimental mechanicsQC120-168.85ENMaterials, Vol 14, Iss 6872, p 6872 (2021)
institution	DOAJ
collection	DOAJ
language	EN
topic	brick clay tuff raw materials waste Technology T Electrical engineering. Electronics. Nuclear engineering TK1-9971 Engineering (General). Civil engineering (General) TA1-2040 Microscopy QH201-278.5 Descriptive and experimental mechanics QC120-168.85
spellingShingle	brick clay tuff raw materials waste Technology T Electrical engineering. Electronics. Nuclear engineering TK1-9971 Engineering (General). Civil engineering (General) TA1-2040 Microscopy QH201-278.5 Descriptive and experimental mechanics QC120-168.85 Nicoleta Cobîrzan Gyorgy Thalmaier Anca-Andreea Balog Horia Constantinescu Andrei Ceclan Mircea Nasui Volcanic Tuff as Secondary Raw Material in the Production of Clay Bricks
description	The present work examines an innovative manufacturing technique for fired clay bricks, using tuff as a secondary raw material. Samples were made of clay and tuff (0–30 wt.%) fired at 900 to 1100 °C. The chemical and mineralogical compositions and physical and thermal analyses of raw materials were investigated by using SEM-EDS, RX and DTA-TG curves. The samples were analysed from the mineralogical, technological and mechanical points of view. The result show that the tuff’s presence in the clay mixtures considerably reduced the shrinkage of the product during the firing process, and the manufactured samples were of excellent quality. The compressive strength of the bricks varied from 5–35.3MPa, being influenced by the tuff content, clay matrix properties and firing temperatures. Finally, the heat demand for increasing the temperature from room to the firing temperature of the sample with 10% tuff content was 22%.
format	article
author	Nicoleta Cobîrzan Gyorgy Thalmaier Anca-Andreea Balog Horia Constantinescu Andrei Ceclan Mircea Nasui
author_facet	Nicoleta Cobîrzan Gyorgy Thalmaier Anca-Andreea Balog Horia Constantinescu Andrei Ceclan Mircea Nasui
author_sort	Nicoleta Cobîrzan
title	Volcanic Tuff as Secondary Raw Material in the Production of Clay Bricks
title_short	Volcanic Tuff as Secondary Raw Material in the Production of Clay Bricks
title_full	Volcanic Tuff as Secondary Raw Material in the Production of Clay Bricks
title_fullStr	Volcanic Tuff as Secondary Raw Material in the Production of Clay Bricks
title_full_unstemmed	Volcanic Tuff as Secondary Raw Material in the Production of Clay Bricks
title_sort	volcanic tuff as secondary raw material in the production of clay bricks
publisher	MDPI AG
publishDate	2021
url	https://doaj.org/article/df247d31dc604c33a8dfd328cafe6336
work_keys_str_mv	AT nicoletacobirzan volcanictuffassecondaryrawmaterialintheproductionofclaybricks AT gyorgythalmaier volcanictuffassecondaryrawmaterialintheproductionofclaybricks AT ancaandreeabalog volcanictuffassecondaryrawmaterialintheproductionofclaybricks AT horiaconstantinescu volcanictuffassecondaryrawmaterialintheproductionofclaybricks AT andreiceclan volcanictuffassecondaryrawmaterialintheproductionofclaybricks AT mirceanasui volcanictuffassecondaryrawmaterialintheproductionofclaybricks
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Volcanic Tuff as Secondary Raw Material in the Production of Clay Bricks

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