In a hydroelectric plant, the flow of water to a turbine must be decreased rapidly whenever there is a sudden drop in load.  This results in high water-hammer pressures and may need a very strong and hence expensive pipe. Surge ...

Materials added to concrete during or before mixing are referred to as admixtures. They are used to improve the performance of concrete in certain situations as well as to lower its cost. There is a rather well-known saying regarding admixtures, ...