MATEC Web Conf.
Volume 289, 2019Concrete Solutions 2019 – 7th International Conference on Concrete Repair
|Number of page(s)||7|
|Published online||28 August 2019|
Mechanical properties of alkali activated geopolymer paste using different Romanian fly ash sources – experimental results
NIRD URBAN-INCERC, Cluj-Napoca Branch, 400524 Calea Floreşti 117, Cluj-Napoca, Romania
2 Technical University of Cluj-Napoca, Civil Engineering Faculty, 400020 Daicoviciu 15, Cluj-Napoca, Romania
3 NIRD URBAN-INCERC, Timişoara Branch, 300223 Traian Lalescu 2, Timişoara, Romania
* Corresponding author: adrian,firstname.lastname@example.org
As concrete demand is constantly increasing in recent years and also considering that cement production is both a consumer of natural resources and a source of carbon dioxide release into the atmosphere, there have been worldwide investigations into green alternatives for making concrete environmentally friendlier and simultaneously to satisfy the development of infrastructure facilities. The use of fly ash as a component of cementitious binders is not new but when considering the specific case of alkaline activation and fly ash representing the only source for the binder formation, it necessitates a more complete understanding of its specific reactions during the alkaline activation process. Since the fly ash varies dramatically, not only from one source to another, but also from one batch to another even when provided by the same power plant, its chemistry in obtaining alkali-activated materials during the geopolymerisation process and the final mechanical properties are considered crucial for the performance of geopolymer concrete. This paper will provide a review of the experimental results concerning the physical and mechanical evaluation of the alkali-activated fly ash-based geopolymer materials, developed with different types of fly ash, for a better understanding of geopolymer concrete production control.
© The Authors, published by EDP Sciences, 2019
This is an Open Access article distributed under the terms of the Creative Commons Attribution License 4.0, which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.
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