trass
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Trass is the local name of a volcanic tuff occurring in the Eifel, where it is worked for hydraulic mortar. It is a grey or cream-coloured fragmental rock, largely composed of pumiceous dust, and may be regarded as a trachytic tuff. It much resembles the Italian pozzolana and is applied to like purposes. Mixed with lime and sand, or with Portland cement, it is extensively employed for hydraulic work, especially in the Netherlands; while the compact varieties have been used as a building material and as a fire-stone in ovens. Trass was formerly worked extensively in the Brohl valley and is now
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Vinony's link graph records 14 inbound references to trass, and connects out to Italy, Netherlands and volcano.
It sits within the topics 1911 Encyclopaedia Britannica articles with no significant updates, Geology of Germany and Masonry.
Vinony links it to 9 Wikipedia language editions.
Wikidata facts
- Subclass of
- pyroclastic rock
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- described by source
- Encyclopædia Britannica 11th edition
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Trass is the local name of a volcanic tuff occurring in the Eifel, where it is worked for hydraulic mortar. It is a grey or cream-coloured fragmental rock, largely composed of pumiceous dust, and may be regarded as a trachytic tuff. It much resembles the Italian pozzolana and is applied to like purposes. Mixed with lime and sand, or with Portland cement, it is extensively employed for hydraulic work, especially in the Netherlands; while the compact varieties have been used as a building material and as a fire-stone in ovens. Trass was formerly worked extensively in the Brohl valley and is now obtained from the valley of the Nette, near Andernach.
==See also== Pozzolan Pozzolana Pozzolanic reaction Pumice
Excerpted from Wikipedia’s “trass” article, available under the CC BY-SA 4.0 licence.
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