Work

Nonconventional Geopolymerization and Densification Method of Alumina-silicate Waste Solids for Producing Extremely High-strength Geopolymers

Year: 2024

Type: article

Abstract: Simultaneous geopolymerization and densification of geopolymeric products is a viable process by cold sintering of residual alumina-silicate. The procedure peculiarity is the axial pressing of the powder previously produced by the usual geopolymerization. Sodium metasilicate nonahydrate is the type of alkaline activator used in the experiment, which does not require the addition of water and does not lead to the formation of a suspension. The geopolymer manufacturing process involved a mixture composed of coal ash, ground metallurgical slag, nano-silica, and sodium metasilicate nonahydrate, the pressing force of the powder being between 60-90 MPa. The compression resistance of the geopolymer reached a maximum of 51.75 MPa.

Source: Nonconventional Technologies Review

Authors: Lucian Paunescu, Sorin Mircea Axinte, Eniko Volceanov

Institution: 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

SDGs: Responsible consumption and production, Industry, innovation and infrastructure

Open Access status: diamond

OpenAlex ID: W7039829828

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