Effectiveness and Compatibility of a Novel Sustainable Method for Stone Consolidation Based on Di-Ammonium Phosphate and Calcium-Based Nanomaterials

Pesce, Cecilia, Moretto, Ligia, Orsega, Emilio, Pesce, Giovanni, Corradi, Marco and Weber, Johannes (2019) Effectiveness and Compatibility of a Novel Sustainable Method for Stone Consolidation Based on Di-Ammonium Phosphate and Calcium-Based Nanomaterials. Materials, 12 (18). ISSN 1996-1944

[img]
Preview
Text
Pesce et al - Effectiveness and Compatibility of a Novel Sustainable Method for Stone Consolidation OA.pdf - Published Version
Available under License Creative Commons Attribution 4.0.

Download (9MB) | Preview
Official URL: https://www.mdpi.com/1996-1944/12/18/3025/htm

Abstract

External surfaces of stones used in historic buildings often carry high artistic value and need to be preserved from the damages of time, especially from the detrimental effects of the weathering. This study aimed to test the effectiveness and compatibility of some new environmentally-friendly materials for stone consolidation, as the use thereof has been so far poorly investigated. The treatments were based on combinations of an aqueous solution of di-ammonium phosphate (DAP) and two calcium-based nanomaterials, namely a commercial nanosuspension of Ca(OH)2 and a novel nanosuspension of calcite. The treatments were applied to samples of two porous stones: a limestone and a sandstone. The effectiveness of the treatments was assessed using scanning electron microscopy coupled with energy-dispersive X-ray spectroscopy, Fourier-transform infrared spectroscopy, ultrasound pulse velocity test, colour measurements, and capillary water absorption test. The results suggest that the combined use of DAP and Ca-based nanosuspensions can be advantageous over other commonly used consolidants in terms of retreatability and physical-chemical compatibility with the stone. Some limitations are also highlighted, such as the uneven distribution and low penetration of the consolidants.

Item Type: Article
Uncontrolled Keywords: consolidation, nanomaterials, calcium carbonate, hydroxyapatite, limestone, sandstone, cultural heritage
Subjects: J500 Materials Technology not otherwise specified
K200 Building
Department: Faculties > Engineering and Environment > Architecture and Built Environment
Faculties > Engineering and Environment > Mechanical and Construction Engineering
Depositing User: Paul Burns
Date Deposited: 18 Sep 2019 13:07
Last Modified: 11 Oct 2019 13:07
URI: http://nrl.northumbria.ac.uk/id/eprint/40725

Actions (login required)

View Item View Item

Downloads

Downloads per month over past year

View more statistics


Policies: NRL Policies | NRL University Deposit Policy | NRL Deposit Licence