Abstract
A method is proposed to quantify the amount of high alumina cement (HAC) in concrete using high resolution gamma ray spectrometry. The method was tested using six samples of concrete composed of HAC and aggregates and three samples of concrete made up of aggregates and a mixture of HAC and Portland cement. The specific acitivities in Bq per kg of two isotopes of the decay series of238U (214Pb and214Bi) and one of the decay series of232Th (228Ac) were used for the quantification.
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