Issue |
MATEC Web Conf.
Volume 403, 2024
SUBLime Conference 2024 – Towards the Next Generation of Sustainable Masonry Systems: Mortars, Renders, Plasters and Other Challenges
|
|
---|---|---|
Article Number | 06006 | |
Number of page(s) | 14 | |
Section | Sustainability and Circularity | |
DOI | https://doi.org/10.1051/matecconf/202440306006 | |
Published online | 16 September 2024 |
Slag-based One-part Alkali-Activated Materials for Sustainable Constructions
1 Dept. of Chemistry, Life Science and Environmental Sustainability, University of Parma, 43124 Parma, Italy
2 Dept. of Engineering and Architecture, University of Parma, 43124 Parma, Italy
3 CERTIMAC Scarl, 48018 Faenza (RA), Italy
This work deals with the development of innovative cement-free plastering mortars with enhanced thermal properties. To this end, one-part alkali-activated slag-based materials were manufactured, by adding aluminum powder as expanding agent to reduce the density and expanded glass to improve thermal insulation. Different recipes were developed by varying the water content and the alkali-activator. The results show that the admixture containing sodium silicate meets the requirements for a lightweight plastering mortar in terms of mechanical strength (class CSII), despite exhibiting slightly elevated thermal conductivity with respect to that required for a type T2 (0.28 vs. 0.20 W/mK). The admixture with potassium silicate shows instead noteworthy values of both density and thermal conductivity, although its mechanical performance is very limited, due to its higher water content. Nevertheless, this last formulation could potentially serve as a viable starting point for the development of a sustainable cement-free construction material for the insulation of the building envelope. Further studies in this direction are currently underway.
© The Authors, published by EDP Sciences, 2024
This is an Open Access article distributed under the terms of the Creative Commons Attribution License 4.0, which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.
Current usage metrics show cumulative count of Article Views (full-text article views including HTML views, PDF and ePub downloads, according to the available data) and Abstracts Views on Vision4Press platform.
Data correspond to usage on the plateform after 2015. The current usage metrics is available 48-96 hours after online publication and is updated daily on week days.
Initial download of the metrics may take a while.