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Samples of "ground granulated blast furnace slag" (left) and "granulated blast furnace slag" (right) Ground granulated blast-furnace slag (GGBS or GGBFS) is obtained by quenching molten iron slag (a by-product of iron and steel-making) from a blast furnace in water or steam, to produce a glassy, granular product that is then dried and ground into a fine powder.
The slag cools to become a stone-like material that is commonly crushed and recycled as construction aggregate. In addition, 4.53 million tons of crushed stone was used for fillers and extenders (including asphalt fillers or extenders), 2.71 million tons for sulfur oxide removal-mine dusting-acid water treatment, and 1.45 million tons sold or ...
A conman typically goes door-to-door, claiming to be a builder working on a contract who has some leftover tarmac, and offering to pave a driveway at a low cost. [2] [6]The paving is in fact often simply gravel chippings covered with engine oil, [2] or not the right depth and type of materials to form a lasting road surface. [3]
Permeable pavement is commonly used on roads, paths and parking lots subject to light vehicular traffic, such as cycle-paths, service or emergency access lanes, road and airport shoulders, and residential sidewalks and driveways.
Concrete from a building being sent to a portable crusher. This is the first step in recycling concrete. Crushing concrete from an airfield. Concrete recycling is the use of rubble from demolished concrete structures.
The material is increasingly being used at domestic properties as a low cost and environmentally friendly alternative to concrete and block paving in paths and driveways. [1] A compacted sub-base of larger crushed stone is often laid prior to the top layer of hoggin, especially if the area to be covered is soft ground, or prone to puddling. The ...
A road being resurfaced using a road roller Red surfacing for a bicycle lane in the Netherlands Construction crew laying down asphalt over fiber-optic trench, in New York City
Archaeometallurgical slag is slag discovered and studied in the context of archaeology. Slag, the byproduct of iron-working processes such as smelting or smithing , is left at the iron-working site rather than being moved away with the product.