Loading...
Please wait, while we are loading the content...
Similar Documents
Structural, Mechanical and Chemical Properties of Low Content Carbon Geopolymer
| Content Provider | MDPI |
|---|---|
| Author | Sne, žana Nenadović Miljana, Mirković Ljiljana, Kljajević Ivana, Bošković Mira, Vukčević Milo, š Nenadović Gulicovski, Jelena |
| Copyright Year | 2022 |
| Description | In recent years geopolymers have shown increased interest as binders with low $CO_{2}$ emission compared to Portland cement. The main goal of this research is focused on connecting green and sustainable characteristics with the mechanical and chemical properties of fly ash-based geopolymer. The samples of different ratios of fly ash (FA) and metakaolin (MK) were prepared. X-ray powder diffraction (XRD) showed that in the geopolymer synthesis reaction a new amorphous phase was formed. Diffuse reflectance infrared Fourier transform spectroscopy (DRIFT) confirmed characteristic bands of the Si-O and O-Si-O groups at 1045 $cm^{−1}$. Compressive strength analysis revealed that the optimal ratio of FA and MK is 50:50 and exhibits the highest value. X-ray photoelectron spectroscopy (XPS) analysis revealed the total reduction of carbon content in the alkali-activated geopolymer with the optimal stoichiometry of 50:50. This indicates the possibility of obtaining a geopolymer material with an almost complete absence of carbon, which implies further application as a material with a very high environmental potential and of zero carbon emissions. |
| Starting Page | 4885 |
| e-ISSN | 20711050 |
| DOI | 10.3390/su14094885 |
| Journal | Sustainability |
| Issue Number | 9 |
| Volume Number | 14 |
| Language | English |
| Publisher | MDPI |
| Publisher Date | 2022-04-19 |
| Access Restriction | Open |
| Subject Keyword | Sustainability Environmental Engineering Carbon Reduction Compressive Strength Geopolymer Metakaolin Fly Ash Xps |
| Content Type | Text |
| Resource Type | Article |
