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It uses a simple Archimedes' screw to mix (clockwise) and to lift the concrete to the delivery chute. Ready-mix concrete (RMC) is concrete that is manufactured in a batch plant, according to each specific job requirement, then delivered to the job site "ready to use". [1] There are two types with the first being the barrel truck or in–transit ...
Stephen invented a self-discharging motorized transit mixer that was the predecessor of the concrete mixer truck and applied for a patent in 1916. [2] However, the patent was rejected in April 1917 by the patent office because it was believed that a truck could not support the weight of a concrete mixer on top of it. [5]
Springfield is a city in and the county seat of Clark County, Ohio, United States. [5] The municipality is located in southwestern Ohio and is situated on the Mad River , Buck Creek, and Beaver Creek, about 45 miles (72 km) west of Columbus and 25 miles (40 km) northeast of Dayton .
Springfield was founded in 1800, [2]: 129 but for its first half-century of existence, the land now included within the district was used for agricultural purposes. [2]: 458 However, by the 1840s, Springfield had grown eastward from its original core, and the brothers Gustavus and William Foos platted some of their land along High Street for residential purposes in 1848.
The trade name "Superior" under the Superior Trade Co. was first used in 1892 and manufacturing began in Springfield, Ohio. They imprinted in their advertising, "The Best in the World". American Civil War Capt. Edward Lyon Buchwalter was one of the organizers of the Superior Drill Company and president of the same from 1883 to 1903.
Regular concrete can typically withstand a pressure from about 10 MPa (1450 psi) to 40 MPa (5800 psi), with lighter duty uses such as blinding concrete having a much lower MPa rating than structural concrete. Many types of pre-mixed concrete are available which include powdered cement mixed with an aggregate, needing only water. [citation needed]