Geotechnical study in Remolinos

In the municipality of Remolinos, the predominant soils consist of fine sands and silts, with frequent proportions of gypsum, anhydrite, salts and carbonate materials such as limestones and dolomites. These materials exhibit good overall bearing capacity; however, the presence of gypsum, anhydrite and salts implies a significant risk of dissolution processes, which may lead to local instability in foundations. The high permeability due to the extensive underlying aquifers requires particular attention for the design of supports and protection against possible dragging phenomena or variations in the groundwater level.

The seismicity in Remolinos is notable, with 68 recorded events over 30 years and a maximum magnitude of 4.8, which makes it necessary to incorporate specific criteria for seismic engineering in the design of structures. The existence of carbonate materials and the pronounced karstic character of part of the bedrock require thoroughly verifying the presence of voids before carrying out foundations, as an essential element for the overall stability of the structure. The absence of clayey substrate rules out risks of expansivity, so the main geotechnical constraints are the dissolution of salts and gypsum, the possible development of karstic voids and seismic action.