PA/CHF - Grogged White Earthenware Sio-2

White earthenware body with 20% fine grog 0-0.5 mm. Ideal for médium size pieces. The presence of grog confers to clay a very interesting textured surface (not flat) which, in turn, provides a set of suitable properties for the design of pieces in complex drying situations, thus avoiding the creation of deformations and cracks. Available in extruded body (moist form), being suitable for shaping and modelling. Firing range (biscuit): 1050-1080ºC; Water contente (throwing): 17%; Plasticity (IP Atterberg): 13; Carbonate content (CaCO3): 13%; Drying shrinkage: 5.3%; Firing shrinkage (1050ºC): -0.3%; Porosity (water absorption at 1050ºC): 11.2%; Dry bending strength: 3.7 N/mm2; Fired bending strength (1050ºC): 26.8 N/mm2; Thermal coefficient (25-500ºC): 76.0x10^-7ºC^-1.