The quantitative determination of uncombined calcium hydroxide and oxide in clinker and cement by X-ray diffraction

Abstract

A quantitative X-ray diffraction method for the determination of uncombined calcium hydroxide in clinkers and cements with an interference maximum of 0·490 nm has been developed, with magnesium hydroxide as the internal standard. This method gives satisfactory results as the accuracy of determination is 0·3 per cent. m/m. The determination of uncombined calcium oxide was noted on the same scan with an interference maximum of 0·145 nm and was found to be inconclusive, giving unsatisfactory results.