Materials used to build the wooden vault over the Plenary Hall in the Spanish Senate Buiding
DOI:
https://doi.org/10.3989/mc.2012.61310Keywords:
Pinus Silvestris, hand-mixed gypsum mortar, crushed fired clay, esparto fibreAbstract
The constituent materials used to build the wooden vault over the Plenary Hall in the Spain’s Senate Building (ca 1814-1820) are analyzed in this paper. Characteristics of gypsum mortar applied on pine beams, boards and blockboard, have been determined. The esparto (=needlegrass) fibre provides a framework for the gypsum mortar to ensure adhesion and forming the surface of the dome. Physical-mechanical properties of the burnt clay-lightened gypsum mortars were determined with laboratory tests, while the composition of these materials was found with XRD,SEM and IR.
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