TY - SER AU - Havard Mork,Jon AU - Gjoerv,Odd e. TI - Effect of gypsum - hemihydrate ratio in cement on rheological properties of fresh concrete PY - 2023/// KW - Hormigon KW - Yeso KW - Propiedades de los Materiales N1 - keywords / palabras clave: cement quality; concretes; gypsum; hemihydrate; slump test; superplasticizers; workability ER -