Blast Furnace Slag (BFS) cement is the combination of Ordinary Portland Cement (OPC) and fine Granulated Blast Furnace Slag (GBFS) gained as a byproduct in the steel-making manufacturer with below 70% that of cement.
Portland Pozzolana Cement (PPC) is a type of blended cement comprising Portland clinker, pozzolana particles and gypsum in certain specific proportions. 
Pozzolana or pozzolans are particles that contain constituents which when combined with lime and water forms compounds that possess cementing properties.
High alumina cement, also known as calcium aluminate cement (CAC) or refractory cement, is a type of hydraulic binder that is manufactured by grinding alumina (Al₂O₃) and limestone (CaCO₃) together and then firing the mixture at a high temperature. It has a high alumina content, typically ranging from 40% to 80%, which gives it excellent heat resistance and refractory properties.

Oil-well cements are used for cementing work in the drilling of oil wells where they are subject to high temperatures and pressures. They usually consist of portland or pozzolanic cement (see below) with special organic retarders to prevent the cement from setting too quickly.