Degree of active method of detection and the detection device null cement

摘要

PROBLEM TO BE SOLVED: To provide a method capable of figuring out not only an existence of a cement activation level but also a remaining rate of the cement activation level when detecting a remaining rate of activation level of unsolidified cement in cement-containing material such as water which contains cement, e.g. cement milk, mortar, ready-mixed concrete, and sludge water.;SOLUTION: The method includes measuring an initial concentration of sulfate ion or sulfur which is dissolved in a cement-containing material in the beggining of detection, then measuring an aged concentration of sulfate ion or sulfur which is dissolved in the cement-containing material in an activation level detection, calculating a ratio of the aged concentration of sulfate ion or sulfur to the initial concentration and determining the calculated ratio as the remaining rate of cement activation level, and detecting the remaining rate of cement activation level existing in the cement-containing material by the rate change of the concentration of sulfate ion or sulfur.;COPYRIGHT: (C)2010,JPO&INPIT