Grade of concrete is defined as the minimum strength the concrete must possess after 28 days of construction with proper quality control. Grade of concrete is denoted by prefixing M to the desired strength in MPa. For example, for a ...
Concrete is a building material made from a mixture of cement, water, sand and gravel. Performance of concrete is evaluated from mechanical properties which include shrinkage and creep, strength and modulus of elasticity. To design concrete one should have deep ...
Zist Yar Varena Company(Private Joint Stock Company) was established in 2014 and has started its activity in the field of production, research and development of modern concrete admixtures in the civil industry and It intends to take steps to improve the quality of concrete and move towards sustainable development by cooperating with the national and international researches and academic centers by using the latest technologies in the world.
