Concrete Mixer


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concrete mixer

[′käŋ‚krēt ‚mik·sər]
(mechanical engineering)
A machine with a rotating drum in which the components of concrete are mixed.
McGraw-Hill Dictionary of Scientific & Technical Terms, 6E, Copyright © 2003 by The McGraw-Hill Companies, Inc.
The following article is from The Great Soviet Encyclopedia (1979). It might be outdated or ideologically biased.

Concrete Mixer

 

a construction machine used for preparing concrete by mechanically mixing its components (cementing material, aggregates, and water).

The basic working element of a concrete mixer is the mixing drum, rotated by an electric motor. Stationary concrete mixers, used as equipment at concrete plants and installations, are differentiated from mobile ones, utilized for small-scale jobs. According to the nature of their operation, concrete mixers may be cycle-action, the most widespread type, or continuous-action. Cycle-action concrete mixers, which are loaded with materials, turn out a prepared mix in separate portions; continuous-action concrete mixers carry on a nonstop mixing of components and discharge of prepared mix.

According to the method of preparing the mix, concrete mixers may be subdivided into gravitational concrete mixers, in which the concrete mix is agitated in the rotating drum by blades attached to its inner surfaces, and concrete mixers using forced agitation that takes place in a stationary drum by blades which move in relation to the walls. The quantity of prepared mix turned out by cycle-action concrete mixers produced in the USSR ranges from 65 to 1,600 liters. A concrete mixer which is mounted on a truck chassis is called a concrete mixer truck.

REFERENCE

Stroitel’nye mashiny. Spravochnik, 3rd ed. Edited by V. A. Bauman. Moscow, 1965.

I. G. SOVALOV and IU. G. KHAIUTIN

The Great Soviet Encyclopedia, 3rd Edition (1970-1979). © 2010 The Gale Group, Inc. All rights reserved.

concrete mixer, cement mixer

A machine that mixes concrete ingredients by means of paddles or a rotating drum. Raw materials usually are introduced into the mixing drum through its open end and discharged by tilting the mixing drum to allow the concrete to pour out.
McGraw-Hill Dictionary of Architecture and Construction. Copyright © 2003 by McGraw-Hill Companies, Inc.
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The CARMIX concrete mixer is a "must-have" for Norm Maurice, president of Sudbury's CARMIX Canada, Paramount Construction and Atlas Concrete Driveways.
The Actros 4140B is a concrete mixer truck used on construction sites.
These include 3.7% duties for imports of crane lorries, mobile drilling derricks, concrete mixer lorries, and concrete-pumping vehicles.
Among the cases explored in the last series were: a man who fell into a concrete mixer, severing his limbs--but who was stitched back together by skilled surgeons who used his toes as fingers; a schoolboy who fell over in the playground, had a pencil in his pocket spear his chest, and walked around for several weeks unaware the pencil was lodged in his lung; and a man who was nearly killed by a severe allergic reaction to a hamster bite.
For example, an electric concrete mixer (see photo, right) might cost $50 a day to rent, while a skid-steer loader (see Page 127) will cost closer to $200 a day.