The aim was to develop a chemical treatment for limestone that would eliminate the repulsion, and thereby prevent salt from applying pressure on the pore walls. The polymer chosen for testing was polyacrylic acid with low molecular weight. The pH of the polymer solution was adjusted for compatibility with calcium carbonate.
To date, there are treatment reproducibility problems that are not fully understood. Possible explanations are discussed and additional research directions are proposed. For a complete report on the project, see the download above.