Cement - Terminology, classification and general requirements
NCh 148:2021 Cemento-Terminología, clasificación y requisitos generales (NCh 148:2021 Cement - Terminology, classification and general requirements); (18 pages, in Spanish)
The notified rule establishes the terms used for cements made with Portland clinker, and their classification in accordance with their composition, resistance and requirements. This rule applies to cements used in the creation of mortars and concretes. The cements are classified into six classes and three grades, as indicated in clause 4.