%0 Conference Paper %B 41th IAHS Word Congress of Housing. Sustainability and Innovation for the Future %D 2016 %T Durability Assessment of Consolidation Effect on Sandstone Monuments %A Ludovico-Marques, Marco %A Chastre, Carlos %C Albufeira, Portugal %K Durability %K Ethyl silicates %K Sandstone Monuments %K sustainability %P 10p %X

The façades of St. Leonard’s church and the castle in Atouguia da Baleia village in western region of Portugal are monuments built in Middle Ages. Significant stone degradation patterns are visible, being the alveolization an outstanding case study.The more porous type of sandstones similar to the variety found in the vernacular architecture of Atouguia da Baleia was treated with ethyl silicates. In order to allow the study of the durability of these conservation treatments, accelerated artificial ageing salt crystallization tests were carried out and an automatic ageing chamber was developed.Physical and mechanical behaviour was assessed on consolidated specimens before and after accelerated artificial ageing salt crystallization tests. The authors propose a prediction of the durability of these consolidation treatments by means of the salt crystallization ageing results.

%Z

REFERENCES[1] ICOMOS - International Scientific Committee for Stone, “Illustrated Glossary on Stone Deterioration Patterns”, 2008.[2] M. Ludovico-Marques, “Contribution to the Knowledge of the Effect of Crystallization of Salts in the Weathering of Sandstones. Application to the Built Heritage of Atouguia da Baleia”, PhD Thesis in Geotechnical Engineering, Specializing in Rock Mechanics,Universidade NOVA de Lisboa, Lisbon, 2008, (in Portuguese).[3] M. Ludovico-Marques, C. Chastre, “Effect of Salt Crystallization Ageing on the Compressive Behavior of Sandstone Blocks in Historical Buildings” Engineering Failure Analysis, vol. 26, pp. 247-257, 2012.[4] M. Ludovico-Marques; C. Chastre, 2014. "Conservation of sandstone monuments: a new approach in consolidation treatments", 40th IAHS World Congress on Housing-Sustainable Housing Construction. Proceedings 2014, Funchal.[5] R. Folk (1974): Petrology of Sedimentary Rocks, Hemphill Publishing, Austin.[6] RILEM, “Recommended Tests to Measure the Deterioration of Stone and to Assess the Effectiveness of Treatment Methods” Matérieux et Constructions, Bourdais-Dunoud, vol. 13 (75), pp. 175-253, 1980.[7] EN 1936, “Natural Stone Test Method-Determination of Real Density and Apparent Density, and of Total and Open Porosity”, European Standard, 1999.[8] F. Pellerin, “La Porosimetrie au Mercure Appliquee a l´ Etude Geotechnique des Sols et des Roches” Bulletin de Liaison des Laboratoires des Ponts et Chaussés, vol. 106, pp. 105-116, 1980.[9] NORMAL-29/88, “Misura dell’ Indice di Asciugamento (Drying Index). Alterazioni dei Material Lapidei e Trattamenti Conservativi - Proposte per l`Unificazione dei Metodi Sperimentali di Studio e di Controllo”, CNR–ICR, Roma, 1991.[10] NP EN12370. Métodos de ensaio para pedra natural.Determinação da resistência à cristalização de sais. Instituto Português da Qualidade 2002, 10 p.

%8 13-16 September %> https://docentes.fct.unl.pt/sites/default/files/cmcr/files/41_iahs_2016_-_marco_marques_-_ext-abstract_durability_assessment_of_consolidation_effect_on_sandstone_monuments_ludovico_marques__chastre.pdf