DIN EN 196-9:2010-07

This part of the European Standard describes a method of measuring the heat of hydration of cements by means of semi-adiabatic calorimetry, also known as the Langavant method. The aim of the test is the continuous measurement of the heat of hydration of cement during the first few days. The heat of hydration is expressed in joules per gram of cement. This European Standard is applicable to all hydraulic binders, whatever their chemical composition, with the exception of quick-setting cements. Another procedure, the so-called solution method, is described in EN 196-8. Either procedure can be used independently. It has been demonstrated that the best correlation between the two methods is obtained at 41 h for the semi-adiabatic method (EN 196-9) compared with seven days for the heat of solution method (EN 196-8). The Committee responsible for this standard is NA 005-07-13 AA "Zement (Sp zu Teilbereichen von CEN/TC 51 und ISO/TC 74)" ("Cement (Mirror Committee to parts of CEN/TC 51 and ISO/TC 74)").