What is gravel?
+ What is sand? + 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
