An equation for calculating the cement content in concretes made with
aluminous cement is proposed, based on determining the Fe2O3 content o
f the concrete, assuming that the proportions of this oxide, as provid
ed by the manufacturing company, throughout the production process are
very stable. The values are corrected according to the Fe2O3 content
of the aggregates. The Fe content is determined by x-ray fluorescence
analysis (XRF).