Rome University, La Sapienza
Chemistry Department
Rome, Italy, Europe
Dr. Giovanni Visco
Programmi, orari, esercitazioni
Corso di Laurea in
Scienze Applicate ai Beni Culturali ed alla Diagnostica per la loro Conservazione
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Laboratory Exercise n.9

Extraction of Soluble Salts From Natural or Artificial Stone Materials as Marble, Granite, Stucco, Plaster, Frescoes, Mortars, Bricks, Tadelakt, Marmorini, Using a Non-destructive and Semi-invasive Procedure Cellulose-based
Chemistry for Restoration and Chemometrics, A.A. 2009/10 (by G.Visco)


The soluble salts

  Soluble salts are naturally present in any natural or artificial stone material. Are present in the intimate structure of the natural material because geomorphology deposited in the stone itself.

  In the artificial stone come precisely from the inert (which are never really inert, but that's another story), but mainly from various types of binders/ligands and water mixing. Before starting the exercise we must therefore remember that the "soluble salts" are not harmful as present, but because "too present" in some cases.

The salt extraction

  To measure we must extract from rocks! Probably we must destroy a small part of rock to permit the dissolution. This is normal, but more and more methods was experimented for "save" the stone itself. We explain one well established.

lumaca
The method

  Sorry we are working to translate to english accounting the high numbers of hits for this page.

Universita' Degli Studi di Roma
La Sapienza
Dr. G. Visco
appointed professor for chemometrics & ....
Corso di Laurea in: Scienze Applicate ai Beni Culturali ed alla Diagnostica per la loro Conservazione
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