to cast in cement -
81Grout — For other uses, see Grout (disambiguation). Grout is a construction material used to embed rebars in masonry walls, connect sections of pre cast concrete, fill voids, and seal joints (like those between tiles). Grout is generally composed of a… …
82Joseph Davidovits — (born 1935) is a French materials scientist who has posited that the blocks of the Great Pyramid are not carved stone, but mostly a form of limestone concrete. He holds the Ordre National du Mérite, is the author and co author of more than 130… …
83tunnels and underground excavations — ▪ engineering Introduction Great tunnels of the world Great tunnels of the worldhorizontal underground passageway produced by excavation or occasionally by nature s action in dissolving a soluble rock, such as limestone. A vertical opening …
84Coal mining — Men leaving a UK colliery at the close of a shift Surface coal mining in Wyo …
85Joseph Aspdin — (December? 1778 – 20 March 1855) was a British cement manufacturer who obtained the patent for Portland cement on 21 October 1824.Joseph Aspdin (or Aspden) was the eldest of the six children of Thomas Aspdin, a bricklayer living in the Hunslet… …
86Lesney Products — Co. Ltd. was a British manufacturing company responsible for the conception, manufacture, and distribution of die cast toys under the Matchbox name.HistoryLesney was founded in 1947 as an industrial die casting company by Leslie Smith (March 6… …
87Magnesium oxide wallboard — (10 mm thickness) Magnesium oxide more commonly called magnesia is a versatile mineral that when used as part of a cement mixture and cast into thin cement panels under proper curing procedures and practices can be used in residential and… …
88Calcium sulfate — Chembox new Name = Calcium sulfate ImageFile = Calcium sulfate hemihydrate.jpg ImageSize = 200px ImageName = Calcium sulfate hemihydrate OtherNames = Plaster of Paris, Drierite Section1 = Chembox Identifiers CASNo = 7778 18 9 RTECS = WS6920000… …
89Ndola —   City   The streets of Ndola City Centre …
90Pipe (material) — A pipe is a tube or hollow cylinder used to convey materials or as a structural component. The terms pipe and tube are almost interchangeable. A pipe is generally specified by the internal diameter (ID) whereas a tube is usually defined by the… …
