 |
Cement is manufactured by heating a mixture of limestone, iron ore, gypsum, clay and other ingredients. Cement concrete is a mixture of coarse aggregates, fine aggregates, cement and water, in suitable proportions.
|
|
Through mix design, suitable proportions of the ingredients of concrete are estimated considering strength, workability, durability and economics. |
|
Workability test and air-content test are the tests generally conducted on fresh concrete. Compressive strength, tensile strength, modulus of rupture, elastic modulus, Poisson's ratio, creep and shrinkage, durability, thermal expansion coefficient etc are the tests conducted on hardened concrete. |
|
Various modifications
and inovatory applications of pavement materials and
pavement design brings in better performance and economy. |
