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Silicate Sawing Sludge Recovery in Thermo Eco-Mortar for Macroporous Plaster

The aim of this research was to develop a new eco-product to find a correct recovery of silicate sawing sludge by means of waste management according to European criteria. To reach this goal, a thermal eco-mortar for a macroporous plaster was developed. The main characteristics of a plaster that inf...

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Autores principales: Zichella, Lorena, Marone, Paolo, Buonanno, Pasquale, D’Amore, Marco, Bellopede, Rossana
Formato: Online Artículo Texto
Lenguaje:English
Publicado: MDPI 2020
Materias:
Acceso en línea:https://www.ncbi.nlm.nih.gov/pmc/articles/PMC7143461/
https://www.ncbi.nlm.nih.gov/pubmed/32182970
http://dx.doi.org/10.3390/ma13061293
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author Zichella, Lorena
Marone, Paolo
Buonanno, Pasquale
D’Amore, Marco
Bellopede, Rossana
author_facet Zichella, Lorena
Marone, Paolo
Buonanno, Pasquale
D’Amore, Marco
Bellopede, Rossana
author_sort Zichella, Lorena
collection PubMed
description The aim of this research was to develop a new eco-product to find a correct recovery of silicate sawing sludge by means of waste management according to European criteria. To reach this goal, a thermal eco-mortar for a macroporous plaster was developed. The main characteristics of a plaster that influence the correct choice of the mortar are good adherence with underlying support, impermeability, thermal and acoustic insulation, mechanical resistance and ability to allow transpiration processes through the wall’s perimeters. Plaster is a mortar composed of a binding part that incorporates sand with a selected particle size distribution, not greater than 2 mm. The sludge, to be used as plaster, must satisfy requirements related to thermal insulation, resistance to moisture, mechanical resistance and good injection. For this purpose, low-content metals sludge, derived from the Luserna stone flaming and cutting slabs, are to be reused as a substitute for the sands and fine particles, respectively, that are normally used to produce plasters. The laboratory tests carried out on the finished product, in accordance with European standards, are as follows: water absorption, specific density, flexural and compressive strength, before and after freeze and thaw cycles, pull out, salt crystallisation cycle resistance and thermal conductivity. Chemical and leaching tests were carried out to verify the possible release of heavy metals into the environment after installation. The product quality was demonstrated as the cement mortars, incorporating the metals, did not allow their release in nature. A sludge recovery, in an unaltered state, was provided to reduce any costs connected to a pre-treatment and to make recovery economically advantageous for the stone sector.
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spelling pubmed-71434612020-04-14 Silicate Sawing Sludge Recovery in Thermo Eco-Mortar for Macroporous Plaster Zichella, Lorena Marone, Paolo Buonanno, Pasquale D’Amore, Marco Bellopede, Rossana Materials (Basel) Article The aim of this research was to develop a new eco-product to find a correct recovery of silicate sawing sludge by means of waste management according to European criteria. To reach this goal, a thermal eco-mortar for a macroporous plaster was developed. The main characteristics of a plaster that influence the correct choice of the mortar are good adherence with underlying support, impermeability, thermal and acoustic insulation, mechanical resistance and ability to allow transpiration processes through the wall’s perimeters. Plaster is a mortar composed of a binding part that incorporates sand with a selected particle size distribution, not greater than 2 mm. The sludge, to be used as plaster, must satisfy requirements related to thermal insulation, resistance to moisture, mechanical resistance and good injection. For this purpose, low-content metals sludge, derived from the Luserna stone flaming and cutting slabs, are to be reused as a substitute for the sands and fine particles, respectively, that are normally used to produce plasters. The laboratory tests carried out on the finished product, in accordance with European standards, are as follows: water absorption, specific density, flexural and compressive strength, before and after freeze and thaw cycles, pull out, salt crystallisation cycle resistance and thermal conductivity. Chemical and leaching tests were carried out to verify the possible release of heavy metals into the environment after installation. The product quality was demonstrated as the cement mortars, incorporating the metals, did not allow their release in nature. A sludge recovery, in an unaltered state, was provided to reduce any costs connected to a pre-treatment and to make recovery economically advantageous for the stone sector. MDPI 2020-03-13 /pmc/articles/PMC7143461/ /pubmed/32182970 http://dx.doi.org/10.3390/ma13061293 Text en © 2020 by the authors. Licensee MDPI, Basel, Switzerland. This article is an open access article distributed under the terms and conditions of the Creative Commons Attribution (CC BY) license (http://creativecommons.org/licenses/by/4.0/).
spellingShingle Article
Zichella, Lorena
Marone, Paolo
Buonanno, Pasquale
D’Amore, Marco
Bellopede, Rossana
Silicate Sawing Sludge Recovery in Thermo Eco-Mortar for Macroporous Plaster
title Silicate Sawing Sludge Recovery in Thermo Eco-Mortar for Macroporous Plaster
title_full Silicate Sawing Sludge Recovery in Thermo Eco-Mortar for Macroporous Plaster
title_fullStr Silicate Sawing Sludge Recovery in Thermo Eco-Mortar for Macroporous Plaster
title_full_unstemmed Silicate Sawing Sludge Recovery in Thermo Eco-Mortar for Macroporous Plaster
title_short Silicate Sawing Sludge Recovery in Thermo Eco-Mortar for Macroporous Plaster
title_sort silicate sawing sludge recovery in thermo eco-mortar for macroporous plaster
topic Article
url https://www.ncbi.nlm.nih.gov/pmc/articles/PMC7143461/
https://www.ncbi.nlm.nih.gov/pubmed/32182970
http://dx.doi.org/10.3390/ma13061293
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