The Influence of Substitution of Fly Ash with Marble Dust or Blast Furnace Slag on the Properties of the Alkali-Activated Geopolymer Paste

Worldwide, it is now known that industrial by-products rich in silicon (Si) and aluminum (Al) can be transformed by alkaline activation into so-called “green concrete”, an efficient and sustainable material in the field of construction; the geopolymer material. In this work, geopolymer materials pro...

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Bibliographic Details
Published inCoatings (Basel) Vol. 13; no. 2; p. 403
Main Authors Ionescu, Brăduţ Alexandru, Barbu, Alexandra-Marina, Lăzărescu, Adrian-Victor, Rada, Simona, Gabor, Timea, Florean, Carmen
Format Journal Article
LanguageEnglish
Published Basel MDPI AG 01.02.2023
Subjects
Aluminum
Blast furnace practice
Blast furnace slags
Cement
Chemical bonds
Concrete
Cost reduction
Dust
Environmental impact
Fly ash
Geopolymers
Industrial plant emissions
Mechanical properties
Raw materials
Silicon
Slag
Sustainable development
Romania
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Summary:Worldwide, it is now known that industrial by-products rich in silicon (Si) and aluminum (Al) can be transformed by alkaline activation into so-called “green concrete”, an efficient and sustainable material in the field of construction; the geopolymer material. In this work, geopolymer materials produced using fly ash and marble dust or blast furnace slag were studied to assess the influence of these substitutions on the performances of the final product. Geopolymer materials have been characterized by physico-mechanical methods, FTIR spectroscopy and microscopically. The analysis of the results indicates the reduction of the mechanical strength performance by substituting the fly ash as the raw material.
ISSN:2079-6412
2079-6412
DOI:10.3390/coatings13020403