Tuesday, January 28, 2020

Quarter minus

Chromechris: Added new "Quarter Minus" aggregate type Wikipedia information page


Quarter Minus is a type of rock aggregate that is usually made from crushed basalt (but can be made of other rock types) from which the crushed rock product is not any bigger than 1/4" in diameter. The quarter minus rock size can consist of rock in diameter as big as 1/4" in size and "fines" (anything smaller than the maximum allowable rock size (which in this case is 1/4), even as small as stone dust). Any aggregate with the name "minus" can contain up to 80% fines. Quarter minus is mostly used as filler aggregate for bigger aggregate, empty space between 2 different sized aggregate, vehicle parking grade, and landscape surfaces. A positive of using Quarter Minus as a landscape aggregate is that it does not inhabit pests and does not decompose like other landscape aggregates like wood-chips, for example.


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