What is Ready Mix Concrete ?

+ What is a transit mixer? + How is concrete placed at site? + How is ready mix concrete better than site mix concrete? + What is grade of concrete? + What tests are conducted to determine the strength of concrete? + What is meant by slump? + What are admixtures? + What are plasticizers? Will the strength of concrete be affected by the addition of these plasticizers? What is concrete? concrete is a composite building material made from the combination of aggregate and a cement binder. The most common form of concrete consists of Portland cement, mineral aggregates (generally gravel and sand) and water. What is aggregate? Aggregate is the component of a composite material used to resist compressive stress. For efficient filling, aggregate should be much smaller than the finished item, but have a wide variety of sizes. For example, the particles of stone used to make concrete typically include both sand and gravel. What is cement? Cement is a material used for bonding other materials ...  more

Few things are more aggravating to produce on a worksite than concrete. Bags of cement, sand, aggregate (gravel) and possibly other additives must be delivered to the construction area. A supply of clean water is also necessary, along with a rented concrete mixing hopper. Even after all the dusty and heavy ingredients have been loaded into the hopper, one small error in the wet/dry ratio can render an entire batch of concrete unusable. One common solution to this messy and time-consuming problem is ready mix concrete. Ready mix concrete manufacturers use the same cement, aggregate, additives and water, but the product is created off-site and usually delivered in bulk to the construction zone. Large trucks with revolving hoppers replace the smaller rented versions used directly on the site. Ready mix concrete is ordered directly from a local supplier who can create custom blends or bulk orders. Some contractors may need more aggregate in their concrete, for example, or special ...  more

In its simplest form, concrete is a mixture of paste and aggregates (sand & rock). The paste, composed of cement and water, coats the surface of the fine (sand) and coarse aggregates (rocks) and binds them together into a rock-like mass known as concrete. Within this process lies the key to a remarkable trait of concrete: its plastic and can be molded or formed into any shape when newly mixed, strong and durable when hardened. These qualities explain why one material, concrete, can build skyscrapers, bridges, sidewalks, and superhighways, houses and dams.  more