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thaumasite (mineral, inorganic material, ... Materials (hierarchy name)) |
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Note: A white, amorphous mineral composed of silicate, carbonate, and calcium sulfate. It is often formed by the reaction of sulfates and concrete or mortar. Thaumasite crystal formation induces sulfate decay in the cement paste matrix. Conservation interventions seek to remove thaumasite or limit its attack. |
Terms: |
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thaumasite (preferred,C,U,English-P,D,U,N)
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thaumasiet (C,U,Dutch-P,D,U,U)
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Facet/Hierarchy Code: M.MT |
Hierarchical Position:
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Materials Facet |
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.... Materials (hierarchy name) (G) |
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........ materials (substances) (G) |
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............ <materials by composition> (G) |
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................ inorganic material (G) |
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.................... mineral (G) |
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........................ thaumasite (G) |
Additional Notes: |
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Dutch ..... Een wit, amorf mineraal dat bestaat uit silicaat, carbonaat en calciumsulfaat. Het ontstaat vaak door de reactie van sulfaten met beton en mortel. Vorming van thaumasietkristal wekt sulfaatverval op in de matrix van cementpasta. In conservering probeert men thaumasiet te verwijderen of het effect van de aanvallen te beperken. |
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