Freeze-Thaw Durability of Porous Building Materials
| Autor: | G. G. Litvan |
|---|---|
| Rok vydání: | 2009 |
| Předmět: |
porosity
Materials science Frost weathering stone Diffusion brique en terre cuite freeze-thaw cycles gel degel pierre (materiau) resistance aux intemperies Hygrothermal properties freezing and thawing concrete brick Composite material frost action Porosity Brick brique de beton weatherability Degree of saturation Durability Amorphous solid cement paste clay bricks porosité Propriétés hygrothermiques concrete bricks Porous medium |
| DOI: | 10.1520/stp36080s |
| Popis: | Water held in the pores of a solid becomes unstable when cooled to temperatures below 0 degrees C. If the conditions permit, the water leaves the pores and ice accumulates outside the system. In case of high cooling rate, high degree of saturation, and long diffusion path, the water cannot reach the external surface and solidifies in a glassy, amorphous state. Mechanical damage occurs only in the latter case. This mechanism is not indigenous to any single type of solid, thus it is applicable to cement paste, stone, and brick, and could be used for increasing the durability of porous materials and for improving test procedures. |
| Databáze: | OpenAIRE |
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