Ancient wall plasters found in archaeological excavations in Marseilles (France): evolution of techniques and materials

Abstract eng:
A multidisciplinary research project has been initiated to study wall plaster fragments found in recent archaeological excavations in Marseilles. The chemical, petrographical and physico-chemical characterization of these mortars allows the determination of their evolution and their processing techniques from the ancient Greek city of the 6th century BC until its Romanization in the 3rd century AD. Several important steps are apparent within the plaster fragments; these show a gradual development from the earth plasters associated with earthen architecture, to the gradual introduction of lime, crushed tiles or bricks as a pozzolanic material and the use of various aggregates, to the use of pure lime plasters with siliceous sand and pozzolanic material.

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