API Spec 10A/ISO 10426-1: 2000 Specification for Cements and Materials for Well Cementing

American Petroleum Institute (API). Twenty-third Edition, April 2002. Effective Date: October 1, 2002 59p. This standard specifies requirements and gives recommendations for eight classes of well cements, including their chemical and physical requirements and procedures for physical testing.
This standard is applicable to well cement Classes A, B, C, D, E and F, which are the products obtained by grinding Portland cement clinker and, if needed, calcium sulfate as an interground additive. Processing additives may be used in the manufacture of cement of these classes. Suitable set-modifying agents may be interground or blended during manufacture of Classes D, E and F.