META KAOLIN:  Nono alumuno slicate  for  insulation, coating and white  apperance of exterior walls. Advised  to be used in the   high –strenght  concreate  such as  nuclear energy production place, toxic waste warehouses concreate, poisonous   material stock places,  resistent  walls of military  warehouse, special purpose buildings, fire resistent walls, high buildings,  bridges, water resistance required construction. The concreate produced with metacaolin has better performance due to the most homogenous distribution of metakaolin. The material is suitable to ASTM -618.