Centro de Território, Ambiente e Construção
Escola de Engenharia da Universidade do Minho
Campus de Azurém
4800-058 Guimarães, Portugal
Phone: + 351 253 510 200 (517 206)
Fax: + 351 253 510 217
Email: geral@ctac.uminho.pt
@JournalArticle {3002, title = {Recycling of biomass and coal fly ash as cement replacement material and its effect on hydration and carbonation of concrete}, journal = {Waste Management 2019}, volume = {94}, year = {2019}, month = {2019-05-01 00:00:00}, pages = {39 - 48}, publisher = {Elsevier}, abstract = {The construction sector has been using supplementary materials in concrete production worldwide, such
}, keywords = {Biomass fly ash, Carbonation, Coal fly ash, Concrete, Hydration, Pastes}, issn = {0956-053X}, doi = {10.1016/j.wasman.2019.05.044}, url = {https://www.journals.elsevier.com/waste-management}, author = {Teixeira, E. R. and Cam{\~o}es, A. and Branco, F. G. and Aguiar, J. B. and Fangueiro, R.} }
as coal fly ash. Nowadays, several sub/products or wastes have been studied to be incorporated in construction materials, and one of those wastes is biomass fly ash. However, using high volumes of these
materials has some drawbacks, one of them being carbonation. In order to understand phenomena such
as this, it is important to study the interaction between the additions and hydration of cement. This paper
focuses on the study of hydration and carbonation of cementitious pastes containing biomass fly ash and/
or coal fly ash by using thermogravimetric analysis and X-ray diffraction analysis and by accelerated carbonation tests. BFA present different chemical and mineralogical composition than CFA. The results show that incorporating biomass fly ash into construction materials has a similar carbonation behaviour to coal fly ash. Biomass fly ash seems to give some extra alkalinity to the mixtures, and this may present benefits to the construction materials and for the ash management.
The Centre for Territory, Environment and Construction (CTAC) is a research unit of the School of Engineering of University of Minho (UMinho), recognised by the “FCT – Fundação para a Ciência e Tecnologia” (Foundation for Science and Technology), associated to the Department of Civil Engineering (DEC), with whom it shares resources and namely human resources.
Currently CTAC aggregates 25 researchers holding a PhD of which 20 are faculty professors of the Civil Engineering Department. Read more
Centro de Território, Ambiente e Construção
Escola de Engenharia da Universidade do Minho
Campus de Azurém
4800-058 Guimarães, Portugal
Phone: + 351 253 510 200 (517 206)
Fax: + 351 253 510 217
Email: geral@ctac.uminho.pt