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|French to English translations [PRO]|
Mining & Minerals / Gems / Sandblasting
|French term or phrase: Tapis de sol à tendance foncée|
|I have a list of the ways in which rolled sillica can be for treating (sandblasting) different surfaces:|
• Filtration (0,4/0,8 et 0,8/1,25)
• Tapis de sol à tendance foncée
• Travaux d’asphaltage
• Sous couche de surfaces synthétiques (0,3/0,8)
I'm not sure whether they mean dark floor coverings because the grains of silica are also dark. Or do they mean tarnished or pitted floor coverings?
|English translation:Floor coverings - generally dark|
If this is a list, then one would tend to state it fairly succinctly, with the main point first, followed by the qualifier.
Selected response from:
B D Finch
Local time: 23:03
|My final translation was "floor coverings which tend to be dark" but this was the closest. Thanks!|
4 KudoZ points were awarded for this answer
|Summary of reference entries provided|
3 mins confidence: 1 hr confidence: Return to KudoZ list
Ground silica – Ground silica, also known as ground quartz and silica flour, is produced by grinding high-purity quartz, quartzite, sandstone , or silica sand to finer than 200 mesh… Ground silica for filler uses typically assays >99.% SiO2 and offers **high brightness**, low moisture, chemical inertness, relatively low surface area, and the low liquid absorption that allows high loading levels.
Silica Sands, Silica Flour, Ground Silica & Cristobalite
Some of the potential advantages that can be gained are weather and chemical resistance, reduced raw material costs, reduced flammability, water resistance, better thermal conductivity, enhanced electrical properties and **improved whiteness.**
[ground silica in paint]
Dark color exterior paints can use only limited amounts because of calcium carbonate’s tendency to “frost” or “chalk” when repeatedly wetted by rain or sprinklers. Such chalking gives the appearance of color fading, though in fact it is the calcium carbonate particles breaking down at the exposed surface and diluting the color pigment. **In dark colored exterior latex paints ground silica or ground feldspars are used in place of a portion of the calcium carbonate.**
The most common WHITE pigment is titanium dioxide. Titanium dioxide is a powder that is white as Manitoba snow, opaque as aluminum foil and as expensive as Manhattan real estate. Because of it's high cost, less expensive paints often use white clays like talc, chaulk [sic] and finely **ground silica** to replace the more expensive TiO2. However, these "extenders" (so called because they improve hide without adding much cost) don't hide as well as titanium dioxide and aren't pure white so they alter the colour of the base.
The paint industry is the largest user of ground silica filler. Some of its advantages are hardness, which improves scrubability and abrasion resistance, inertness, which improves chemical resistance in industrial paints, especially when used in harsh environments or in exterior house paints exposed to acid rain: irregular particle shape, **which reduces gloss and provides flattening**; and low oil absorption, which reduces vehicle demand while not increasing viscosity. The synthetic silicas are used in paints as flattening agents or to impart thixotropic properties.
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