[M-IS05] Geomaterials in cultural heritage: weathering, investigation techniques, and conservation

[MIS05-P01] DECAY ANISOTROPY AT THE MONASTERY OF BONAVAL (GUADALAJARA, SPAIN).

*Miguel Gomez-Heras¹, Maria Teresa Gil-Muñoz², Laura Lopez-Gonzalez³, Javier Martinez-Martinez⁴ (1.Universidad Autonoma de Madrid, 2.Universidad Complutense de Madrid, 3.Independent Architect, 4.IGME-CSIC)

Keywords:Stone decay, Hydrometeorological anisotropy, Weathering anisotropy

Exposure orientation of stone buildings is a crucial factor, as most hydrometeorological weathering agents, mainly wind and consequently driven rain, act directionally. Therefore, weathering anisotropy relates directly to environmental anisotropy. Thus, assessing the different weathering rates on the four aspects of a building offers information on the past and present environmental anisotropy. Stone weathering may be assessed in different ways but, for the purpose of evaluating how it varies within a façade and between façades, non-destructive testing of mechanical decay is considered to be extremely suitable. Non-destructive techniques allow on-site testing of a large number of points without sampling and, therefore, mapping and repeated measurements over time. This communication presents the characterisation of the mechanical decay of cretaceous limestone blocks on the different façades of the ruins of a 13^th century monastery in the region of Guadalajara (Spain) by means of ultrasound velocity and surface hardness. The directionality of weathering is assessed and the possible directionality of hydrometeorological agents is evaluated.

Research belonging to projects PID2020-116896RB-C21 and PID2020-116896RB-C22, funded by MCIN/AEI/10.13039/501100011033