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Cement clinker is a solid material produced in the manufacture of portland cement as an intermediary product. Clinker occurs as lumps or nodules, usually 3 millimetres (0.12 in) to 25 millimetres (0.98 in) in diameter.
Clinker often forms a loose, dark deposit consisting of waste materials such as coke, coal, slag, charcoal, and grit. Clinker often has a glassy look to it, usually because of the formation of molten silica compounds during processing. Clinker generally is much denser than coke, and, unlike coke, generally contains too little carbon to be of ...
An independent research effort of AEA Technology to identify critical issues for the cement industry today concluded the most important environment, health and safety performance issues facing the cement industry are atmospheric releases (including greenhouse gas emissions, dioxin, NO x, SO 2, and particulates), accidents, and worker exposure ...
Reemtsma cigarette factory in Hamburg by Fritz Höger A piece of vitrified brick. Clinker bricks are partially-vitrified bricks used in the construction of buildings.. Clinker bricks are produced when wet clay bricks are exposed to excessive heat during the firing process, sintering the surface of the brick and forming a shiny, dark-colored coating.
Portland cement clinker was first made (in 1825) in a modified form of the traditional static lime kiln. [2] [3] [4] The basic, egg-cup shaped lime kiln was provided with a conical or beehive shaped extension to increase draught and thus obtain the higher temperature needed to make cement clinker.
Stay informed about the progress in space exploration, AI developments, and other pioneering topics in the science and technology realm. While some of the technologies covered are not yet on the ...
In the Middle Ages that preceded the early modern era, shipbuilding mainly utilized clinker building techniques, in which wooden hull planks were laid in an overlapping fashion so that they are both easier to construct and lighter. A common form of a clinker-built ship is Nordic longship associated with the vikings. [2]
The importance of stone tools, circa 2.5 million years ago, is considered fundamental in the human development in the hunting hypothesis. [citation needed]Primatologist, Richard Wrangham, theorizes that the control of fire by early humans and the associated development of cooking was the spark that radically changed human evolution. [2]