Article ID | Journal | Published Year | Pages | File Type |
---|---|---|---|---|
10285124 | Construction and Building Materials | 2016 | 12 Pages |
Abstract
The durability of a new phosphate consolidant for limestone, based on formation of hydroxyapatite (HAP), was investigated in comparison with ethyl silicate (ES). Untreated, HAP- and ES-treated samples were subjected to repeated wetting-drying, freezing-thawing and salt crystallization cycles. The weathering effects were monitored in terms of alterations in visual appearance, weight, dynamic elastic modulus, tensile strength and pore size distribution. HAP samples performed better than untreated samples and underwent less deterioration in original properties than ES samples. ES samples, subjected to salt crystallization cycles when the treated layer was still hydrophobic, experienced detachment of the consolidated layer.
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Physical Sciences and Engineering
Engineering
Civil and Structural Engineering
Authors
Enrico Sassoni, Gabriela Graziani, Elisa Franzoni,