Abstract
The aim of the study is to determine the efficiency of the consolidation treatment with Paraloid B 72, performed on wood degraded by biological attack. The method of determining the HM hardness is an original scientific method, that is minimally invasive and which indicates the level of damage to the substrate before the consolidation treatment and at the end of consolidation, allowing the evaluation of the process. The specimens are tested with the Mark 10 apparatus to determine the HM hardness, which can be related to a standardized hardness. Two consolidation steps are performed in Paraloid B72, 12% solubilized in Mixture (Ethyl Acetate and Toluene, 1:1). At the end of the consolidation, the hardness increases from 6.74 N/mm2 (37.11%) to 13.73 N/mm2 (75.61%), compared to a reference wood, which has a hardness of 18.16 N/mm2.
Highlights
Goods of art with wooden supports are subject to a process of evolutionary, natural deterioration, in conditions of controlled environment, or accentuated deterioration, in an improper environment or inadequate conditions of storage and exposure
2 Objective Evaluation of the efficiency of the wood consolidation treatment from the cultural heritage goods, by reporting to the changes produced at structural level of the anatomical elements and/or on the physical and mechanical properties of the wood damaged by the xylophagous attack
This study analysed the efficiency of the consolidation, using a minimally invasive assessment method, based on hardness determination (HM) with the Mark 10 dynamometer, which can be used directly on the heritage object, without the need for sampling
Summary
Goods of art with wooden supports are subject to a process of evolutionary, natural deterioration, in conditions of controlled environment, or accentuated deterioration, in an improper environment or inadequate conditions of storage and exposure. Research in the field of wood engineering and wood conservation/restoration of works of art aims to observe and evaluate the damage caused by wood-eating insects, and to establish a treatment, depending on the level of damage. All of these are subject to or sometimes even limited by heritage conservation legislation, in terms of invasiveness or the possibility of extracting fragments large enough to be able to make structural or mechanical strength determinations in accordance with the standards in force (reported in healthy wood). The present research aims to contribute to the efficiency by measuring hardness during the course of consolidation treatment
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