The biocalcarenite stone of Agrigento (Italy): Preliminary investigations of compatible nanolime treatments

TAGLIERI, Giuliana, OTERO, Jorge, DANIELE, Valeria, GIOIA, Gianluca, MACERA, Ludovico, STARINIERI, Vincenzo and CAROLA, Asuncion Elena (2018). The biocalcarenite stone of Agrigento (Italy): Preliminary investigations of compatible nanolime treatments. Journal of Cultural Heritage, 30.

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Nanolime is a promising consolidant for the conservation of most historic structures thanks to its high compatibility with carbonate-based substrates. Nanolime can recover the superficial cohesion of deteriorated surfaces thanks to its potential to complete the carbonation process, recreating a thin network of new cementing calcium carbonate. In this paper, the nanolime was produced by an innovative, time and energy-saving and scalable method, and its efficacy was tested preliminarily on biocalcarenite stones from Agrigento. The stones characterization as well as the treatment effectiveness, in terms of protection against water and superficial consolidation, was investigated by several techniques such as X-ray fluorescence, X-ray diffraction, scotch tape test, water absorption by capillarity, mercury intrusion porosimetry, drilling resistance measurement system and colorimeter. Investigations showed that nanolime could guarantee a complete transformation in pure calcite together with a superficial consolidation and a reduction in water absorption.

Item Type: Article
Uncontrolled Keywords: Nanoparticles, Calcium hydroxide, Consolidation, Biocalcarenite, Agrigento
Research Institute, Centre or Group - Does NOT include content added after October 2018: Materials and Engineering Research Institute > Structural Materials and Integrity Research Centre > Centre for Infrastructure Management
Identification Number:
Depositing User: Vincenzo Starinieri
Date Deposited: 06 Feb 2018 10:28
Last Modified: 18 Mar 2021 07:09

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