Reuse of Paper Mill Ash in Plaster Blends
Saveria Monosi, Daniela Sani*, Maria Letizia Ruello
Identifiers and Pagination:Year: 2012
First Page: 5
Last Page: 10
Publisher Id: TOWMJ-5-5
Article History:Received Date: 05/03/2012
Revision Received Date: 11/04/2012
Acceptance Date: 11/04/2012
Electronic publication date: 29/5/2012
Collection year: 2012
open-access license: This is an open access article distributed under the terms of the Creative Commons Attribution 4.0 International Public License (CC-BY 4.0), a copy of which is available at: https://creativecommons.org/licenses/by/4.0/legalcode. This license permits unrestricted use, distribution, and reproduction in any medium, provided the original author and source are credited.
This work is part of a broad research conducted to study the re-use of industrial wastes in an economical and environmentally sustainable manner. Re-use of lightweight ash from the paper mill industry in the manufacture of plaster blends is examined in this study. Lightweight ash is produced during the combustion process of de-inking sludge. Studies demonstrate that lightweight ash is an excellent ingredient in the production of cement mortars and/or pozzolanic mortars to be used as plaster. In this research, ash valorization was researched by investigating the efficacy of the ash as it is, as a substitute for very fine sand.
If properly mixed at an optimal mix proportion, the mechanical strength ranges from 4÷10MPa with specific gravity between 1150 and 1350 Kg/m3. Water absorption may be reduced to a very low level with silane-based surface treatment.