Additive 04 : Chemistry and Chemical Disasters. A material other than cement or water which is added to a cement subsequent to its manufacture to modify properties. Equivalent of admixture in ASTM usage. (Bul 10C)
The Mudblogger (Oilfield, Energy and Related Photographs), Oil Field Glossary, TX, USA 2014. http://mudblogger.com/oilfield-glossary/, (Oil - Amer) {777}