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A concrete mixer is an essential fixture in any construction site. The quintessential part of any mixer is a rotating drum, which homogenizes all the ingredients such as cement, aggregate, sand or gravel with water to form concrete. These mixers serve another useful purpose. They help the concrete from drying that might end up hardening the mixture. The primary section of any cement mixer is a rotating drum, which homogenizes all the components. Ninety five percent of homogenizing is completed in 30 seconds. Another use of a concrete mixer is to prevent concrete from drying, resulting in hardening of the concrete. Basically, this machine is available in a variety of sizes. The quality of a construction depends on the quality of cement/concrete used. In the ultimate analysis it the homogeneity of the materials after mixing that that determines the quality. Selecting concrete mixers to a large extent depends on the mixing method that is best suited for application at job site. In this regard issues to be considered include: location of the construction site (distance from the batching plant), the amount of concrete needed, the construction schedule (volume of concrete needed per hour), and the cost. In Batch type and Continuous concrete mixers, there is a further sub-division. These are Mobile or Stationary and Standard Transit mixer. A mobile mixer is a truck to transport several batched location like roadways and sidewalks. These mobile mixers are, further categorized into several types with regard to mixing grade and size of the mixing pan. Stationary mixers are normally used when concrete is required in bulky consignments for one location. Standard Transit Mixer are used in huge quantity of concrete is required. These delivery trucks have huge rotating barrels where cement is mixed. Usually these standard transit mixers are quantity based which means the specific amount of cement the trucks can carry. If the customer has ordered more than his actual requirement, the remaining concrete finds application as ready mix concrete. The quality of concrete is determined by its microstructure, composition and curing conditions. But finally it is the mixing methods and mixer condition used to process the concrete that are of utmost significance. Primarily there are two basic types of mixers used: batch mixers and continuous mixers. The batch type produces concrete one batch at a time, while the second type produces concrete at a constant rate. Selection of the right kind of mixers depends on the batch output. For the concrete one can either buy Portland cement or pre-mix cement. However most consumers prefer pre-mix which is more adaptable for almost all jobsite applications. Pre-mix constitutes a homogenized mixture of cement, sand and gravel to water. More information at: http://concrete-mixer.made-from-india.com/
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