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Selenitic lime, also known as Scotts' cement after Henry Young Darracott Scott, is a cement of grey chalk or similar lime, such as in the Lias Group, with about 5% added gypsum plaster (calcined gypsum). [13] Selenite is a type of gypsum, but selenitic cement may be made using any form of sulfate or sulfuric acid. [18]
Cement from the site is carried to destinations by Road and Rail (rail services being provided by Freightliner heavy haul and Colas Rail over the Vale of Glamorgan Line). In July 2020, it was observed that Aberthaw cement in bulk was being shipped in large consignments by PCA rail tank wagons equipped for pressure unloading at destination, thus ...
The combination of Portland cement and lime is used for stabilization and solidification of the ground through establishing of lime cement columns or stabilization of the entire upper mass volume. [further explanation needed] [23] The method provides an increase in strength when it comes to vibrations, stability and settling. When building e.g ...
Plastic bag "made mainly from limestone" [clarification needed] Other uses include: It is the raw material for the manufacture of quicklime (calcium oxide), slaked lime (calcium hydroxide), cement and mortar. [59] Pulverized limestone is used as a soil conditioner to neutralize acidic soils (agricultural lime). [115]
Andrew Looney in 1987 penned a sci-fi short story, [3] "The Empty City", that included a game called Icehouse, an ancient Martian game. [4] Readers requested to learn how to play the game. Thus actual rules were invented for Icehouse by Andrew Looney, Kristin Wunderlich (then future wife of Looney) and John Cooper, then plastic pyramid pieces ...
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.
Ground plastic may be used as a construction aggregate or filler material in certain applications. [142] [143] While generally unsuitable in structural concrete, plastic's inclusion in asphalt concrete, (forming rubberised asphalt), subbase and recycled insulation can be beneficial. [144] An example of this is the construction of plastic roads ...
Sand mining is the extraction of sand, mainly through an open pit (or sand pit) [1] [failed verification] [2] but sometimes mined from beaches and inland dunes or dredged from ocean and river beds. [3] Sand is often used in manufacturing, for example as an abrasive or in concrete.