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Questions & Answers on Tuff Tiles & Slabs in China
What is the difference between tuff and pumice?
Posted by Visitor
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1ReplyThe ash is very fine grained, so only the rock fragments and pumice are identifiable. A rock with a pyroclastic texture is termed a tuff if the largest fragments are less than 2.5 inches long, a volcanic breccia if the fragments are larger.
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Is tuff extrusive or intrusive?
Posted by Visitor
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1ReplyExtrusive igneous rocks erupt onto the surface, where they cool quickly to form small crystals. Some cool so quickly that they form an amorphous glass. These rocks include: andesite, basalt, dacite, obsidian, pumice, rhyolite, scoria, and tuff.
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How strong is tuff rock?
Posted by Visitor
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1ReplyTuff rock has geotechnical properties such as 18-25 kN/m3 of unit weight, 1.5 - 2.4 gr/cm3 of bulk density, 2.29 - 2.64 gr/cm3 of particle density, highly varied compressive strength depending on the degree of weathering, 0 - 1.45 MPa of cohesion, friction angle = 24° - 45° of friction angle, and 4% - 42% of porosity.
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