Explanation: Powdered cement, produced by heating a properly proportioned mixture of finely ground raw materials (calcium carbonate, silica, alumina, and iron oxide) in a kiln to a temperature of about 2,700oF. www.eia.doe.gov/oiaf/1605/95report/glossary.html
Explanation: Powdered cement, produced by heating a properly proportioned mixture of finely ground raw materials (calcium carbonate, silica, alumina, and iron oxide) in a kiln to a temperature of about 2,700oF. www.eia.doe.gov/oiaf/1605/95report/glossary.html
Clare Macnamara Spain Does not meet criteria Native speaker of: English PRO pts in category: 4