Mortiers de chaux dolomitique avec adjonction de kaolin cuit: l'experience goenoise.

The research about the materials used at Genoa from middle age to Nineteen century for the production of mortars and plasters, beginning from the interesting results of some archeological researches conduct from the Institute of History of the Material's Culture (ISCUM), in the first half of Eighty years of last century. This researches have point out the large use of the dolomitic lime and the use of burned kaolin like pozzolanic material in the building construction, and have highlighted the surprising results of some dough produced during the city construction. An example of this results are the mortars of medieval harbour that still now give, after five century of the permanence in an aggressive environment, an high mechanical resistance and an high resistance to the chemical and biological attck. With this paper we want underline the results of this researches that have beeen conduct in a multidisciplinary method from the archaeological yard, through the mineralogical laboratories, to the laboratories of materials engineering of the University of Genoa.