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
@conference {2010, title = {Performance of fly ash based one-part geopolymer mortars in durability tests}, journal = {Congresso Luso-Brasileiro de Materiais de Constru{\c c}{\~a}o Sustent{\'a}veis}, volume = {1}, year = {2014}, month = {2014-03-07 00:00:00}, pages = {583-591}, publisher = {Universidade do Minho}, address = {Guimar{\~a}es}, abstract = {Environmental concerns regarding the production of cement particles in terms of energy
}, keywords = {Alkali-activated binder, Durability assessment, One-part Geopolymer.}, author = {Abdollahnejad, Z. and Pacheco-Torgal, F. and Aguiar, J. B. and Jesus, C. M. G.} }
consumption and CO2 emission resulted in to conduct widely studies for more environmentally
viable alternatives. One of these alternative solutions is to use alkali-activated binder which is
produced using industrial by-products containing silicate materials. Geopolymeric binders are the
latest types of inorganic binders which use alkaline activation of wastes such as slag or fly ash. The
geopolymerization of alumina-silicate materials is a complex chemical process evolving dissolution
of raw materials, transportation, orientation and polycondensation of the reaction products. Classical
two part geopolymers could become more eco-efficient with a lower CO2 footprint if sodium
silicate usage is avoided. Besides current geopolymeric mixes can suffer from efflorescence
originated by the fact that alkaline or soluble silicates that are added during processing cannot be
totally consumed during geopolymerisation. Therefore, new and improved geopolymer mixes are
needed. One-part geopolymers (sodium silicate free) were proposed in 2008. Up to now a lot of
issues remain unexplained about them. Thus this study was assigned to investigate the durability
performance of one-part geopolymers. The tests made comprise water absorption, penetration of
chloride, carbonation, acid attack.
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