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Fly Ash-Geopolymer Foam Activated in Alkaline Environment Based on Potassium

Year: 2025

Type: article

Abstract: Fly ash-geopolymer foam was made under the conditions of choosing an alkaline activator solution composed of potassium hydroxide and potassium silicate compared to the sodium-based ones usually used. The adopted expanding agent was sodium perborate substituting the known hydrogen peroxide (H2O2), silica fume was chosen due to its ability for increasing the foam strength, and olive oil was the agreed surfactant replacing more effective but more expensive materials. The results showed porous products with excellent heat-insulating properties and simultaneously satisfactory compression and flexural resistance obtained at an early age (7 days) the quality level being almost similar to that of the best products worldwide.

Source: Zenodo (CERN European Organization for Nuclear Research)

DOI: 10.5281/zenodo.15062733

Authors: PĂUNESCU, LUCIAN, VOLCEANOV, ENIKÖ, PĂUNESCU, BOGDAN VALENTIN

Institutions: Metallurgical Research Institute, Universitatea Națională de Știință și Tehnologie Politehnica București

Language: English

Topic: Concrete and Cement Materials Research

Subfield: Civil and Structural Engineering

Field: Engineering

Domain: Physical Sciences

SDG: Responsible consumption and production

Open Access status: green

OpenAlex ID: W6930967474

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