期刊
JOURNAL OF CULTURAL HERITAGE
卷 13, 期 2, 页码 154-166出版社
ELSEVIER FRANCE-EDITIONS SCIENTIFIQUES MEDICALES ELSEVIER
DOI: 10.1016/j.culher.2011.07.003
关键词
Consolidation treatment; Carbonate stones; Assessment method for consolidation; Effectiveness; Penetration depth; Resistance increase; Microdrilling; Ultrasonic velocity
类别
资金
- DGEMN
- IST
- LNEC
- FEDER
- Fundacao para a Ciencia e Tecnologia through research unit ICIST, Instituto de Engenharia de Estruturas, Territorio e Construcao
This article demonstrates the importance of treatment application procedures on the consolidation effectiveness obtained by comparison of the results obtained using three different consolidants on four carbonate stone types, and proposes a general methodology for assessing the potential effectiveness of consolidants in laboratory conditions. It stresses the relevance of taking into account the treatment methodology, given the influence application protocols can have on the overall behaviour of the consolidated material. Several mechanical properties were assessed to demonstrate this influence on the performance of the consolidant. The results demonstrate that the strengthening action achieved with a specific product can only be defined in a strict relation to the treatment protocol used to produce it. The results also contribute towards the definition of standard testing protocols on stone consolidation. The application of a consolidant by direct contact capillary absorption is a reliable procedure and the results are easier to interpret than others obtained by brushing or by full immersion, thus making this procedure a good candidate for an eventual standard laboratory assessment method of the consolidation action of any specific stone/consolidant combination. This study also showed that the best test method to assess the strengthening action of stone consolidants in soft stones is DRMS ( Drilling Resistance Measuring System). Moreover, the collection of longitudinal ultrasound velocity profiles determined in stones specimens treated by contact capillary absorption was shown to be a useful non-destructive method to assess the depth of the strengthening action achieved. (C) 2011 Elsevier Masson SAS. All rights reserved.
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