Recherche

Notice catalographique « Controlling Salt Damage : 2011-02 »

Titre
Controlling Salt Damage : 2011-02
Auteur ou éditeur
  • Scherer, George W.
  • United States. National Park Service
  • Princeton University
Lieu de publication
Princeton, N.J.
Maison d'édition
National Center for Preservation Technology and Training
Date de publication
2011
Collation
20 pgs.
Résumé
"The goal of this study was to develop a chemical treatment for limestone that would eliminate the repulsion, and thereby prevent salt from applying pressure on the pore walls. On the basis of screening tests, the polymer chosen for testing was polyacrylic acid with low molecular weight (~5000). Potassium hydroxide is used to raise the pH of the polymer solution to 7-8, and the solution is equilibrated with calcium carbonate before being introduced into the stone, where the polymer adsorbs on the pore walls. When crystals of sodium sulfate are induced to grow within the stone, the damage is strongly reduced by the coating in most cases. To date, there are problems of reproducibility with the treatment that are not fully understood. Possible explanations are discussed and additional research directions are proposed."
Langue
English = Anglais
Sujet
  • Limestone - Preservation
  • Calcaire - Préservation
Pays
United States
Type de document
Monograph = Monographie
Localisation
TA 428 .L5 G46 2011
Clé
17538
Collection
Catalogue
Date de modification :