is an intermediate cement product made by sintering limestone, clay, and iron oxide in a kiln at around 1,450 degrees Celsius. One metric ton of clinker is used to make approximately 1.1 metric tons of gray Portland cement.
The resulting admixture from burning a combination of limestone with silica, alumina, and iron oxide-containing materials. A lump or ball of the fused material, usually 1/8" to 1" in diameter, is formed by heating cement slurry in a kiln. Clinker, when cool, is ground into a fine powder and interground with gypsum to form cement. See admixture.
Or clencher; Hull planking running fore-and-aft with the lower edge of each strake overlapping outboard the upper edge of the plank below it. Clinker strakes are usually secured to each other by nails with roved heads (i.e. the nail ends have a flat washer placed over them and are then mushroomed over with a hammer). See carvel.
Clinker building is a method of constructing hulls of boats and ships by fixing wooden planks and in the early nineteenth century, iron plates to each other so that the planks overlap along their edges. The overlapping joint is called a land. In any but a very small boat, the planks will be joined also, end to end.