Filling Fresh Metakaolin‐Based Geopolymer Paste with Wood Ash: Chemical and Mechanical Characterization

Author:

Catauro Michelina1ORCID,Viola Veronica1ORCID,D'Amore Alberto1ORCID

Affiliation:

1. Department of Engineering University of Campania “Luigi Vanvitelli” Via Roma 29 Aversa 81031 Italy

Abstract

AbstractWood ash is the powdery residue remaining after wood combustion. Today, only some of the wood ashes are recycled, while most are disposed of in landfills. Increasing recycled wood ash can limit environmental damage and save transportation costs and waste disposal. This paper presents including 10% of wood ashes as a filler material for geopolymers. The ashes, coming from a local Italian restaurant, are sieved between 65 and 79 µm and are incorporated into a metakaolin‐based geopolymer matrix, cured at room temperature (25 °C). Ionic conductivity, pH, and Infrared Spectroscopy analysis, conducted after 7, 14, 28, and 56 days of curing time, reveal the occurrence of the geopolymerization process. Furthermore, the mechanical strength results allow the comparison of these materials with Portland cement, one of the most common polluting competitors.

Funder

Università degli Studi della Campania Luigi Vanvitelli

Publisher

Wiley

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