The first industrial process for the production of a cement based on calcium aluminates was patented in 1908 and since then these cements have become hugely important for a wide range of applications. This volume presents the proceedings of the international conference held in Avignon, France in June 2008, close to the site of the invention, to celebrate the centenary of the discovery of these cements. The papers come from Europe, North America, the Far East, the Middle East and South Africa and demonstrate a strong continuing interest, and real progression, in the knowledge and understanding of this important class of cement, demonstrating that CACs are well placed to continue extending their field of applications for, hopefully, the next hundred years. New developments and applications covered in the 52 papers include offshore applications, encapsulation, wastewater treatment, self-levelling flooring and refractory applications. Various studies also demonstrate the increasing importance of CACs in formulations, with much interest in blended systems, and especially the ternary system with calcium sulphate and Portland cement. In addition, strong contributions relate to the phase systems, CAC types, hydration, mechanical properties and durability.