Role of dispersant and humidity on the setting of millimetric films of aluminous cement prepared by tape casting

摘要: Abstract An aluminous cement (Secar 71 from Lafarge) has been used for preparing millimetre thick films by tape casting. Slurry preparation is described. The effect of several dispersants studied. optimum dispersion, associated with the minimum viscosity, obtained minimal amounts dispersant in case acetic and propionic acids. Indeed, corresponding quantities are less than 0.5% weight relative to cement. In addition its dispersive role, acid plays a role setting. It retarding below 1% mass this amount, it an accelerating on Tapes prepared cement, water, acid, PEG 300 have left set different environments at 20 °C (50% or 95% humidity, water). formation calcium hydrates most important when setting done water. Lastly, advantage water also discussed respect elimination organic products that