Alkali-Activated Binder of Municipal Solid Waste Incineration Bottom Ash at Lower pH Levels DOI Open Access

Gintautas Tamošaitis,

Danutė Vaičiukynienė

Materials, Journal Year: 2025, Volume and Issue: 18(5), P. 1076 - 1076

Published: Feb. 27, 2025

This paper focuses on the alkaline activation of municipal waste incineration (MSWI) bottom ash to create a dense, non-porous composite structure. Normally, high pH solutions are used activate MSWI ash, but this has side effect creating residual effects in ash. Due uniqueness process, retains metallic aluminum, which reacts with alkali produce hydrogen gas, forms porous structure sample during hardening composite. study demonstrates method eliminating by lowering activator below 12.5. An alkali-activated binder was prepared from ground as precursor and triple activator: NaOH solution, soluble glass (SG) silica gel (SW). The highest compressive strengths about 20 MPa were achieved for activators such sodium hydroxide, waste.

Language: Английский

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