Concrete has a very low coefficient of thermal expansion and as it matures concrete shrinks all concrete structures will crack to some extent due to shrinkage and tension concrete which is subjected to long duration forces is prone to creep the density of concrete varies but is around 2400 kilograms per cubic metre 150 lb cu ft. Properties of concrete are influenced by many factors mainly due to mix proportion of cement sand aggregates and water ratio of these materials control the various concrete properties which are discussed below concrete is known by its grade which is designated as m15 m20 etc in which letter m . Properties of concrete are divide into two major groups properties of fresh concrete properties of hardened concrete fresh concrete fresh concrete is that stage of concrete in which concrete can be moulded and it is in plastic state. Concrete properties properties of normal strength portland cement concrete concrete volume estimate estimate required concrete volume per sq ft of slab concrete columns estimate concrete volume required for concrete columns. Properties of concrete concrete is an artificial conglomerate stone made essentially of portland cement water and aggregates properties of concrete while cement in one form or another has been around for centuries the type we use was invented in 1824 in britain it was named portland cement because it looked like the
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