VICAT | Prompt natural cement

For over 170 years, Vicat has exploited a remarkable deposit. The quarry where Prompt Natural Cement is situated in the Chartreuse Mountains. The source is a single geological layer of argillaceous limestone with regular and specific chemical and mineral composition suitable for producing natural cement. The burning process has remained unchanged since the 19th century.The stone are burned in vertical kilns traditionally used for lime.Burning is at low temperature and across a wide thermal range (between 500°C and 1200°C). Unlike hydraulic lime, the stone contains very little free lime and is not slaked after burning. This special characteristic is why it is termed natural cement as opposed to natural hydraulic lime.