At a first glance, Celitements are rather strange hydraulic binders. They already contain water, which is chemically bound within these novel hydraulically active calcium hydrosilicates. Key is the amount of water and the type of incorporation. Conventional cements are free of water - after the addition of water hydration reaction starts and solidification takes place. Celitements plus water, sand and aggregate can be processed to concrete like Ordinary Portland Cements (OPC).
Celitements show the handling and quality of known cementitious binders as well as a good energy efficiency and decreased carbon dioxid emission due to manufacturing. In a basic approach, lime and sand are used as starting materials - a lime modulus in the range of 0,5 to 2 is sufficient. As most of the carbon dioxids originates from limestone, this reduces emissions up to 50% compared to OPC.
Celitement is, microscopically considered, an extremely disordered material that consists mostly of thin amorphous layers of hydraulic calciumhydrosilicate. It also forms agglomerates of different sizes from very fine particles, which can determine the reactivity and processing properties of Celitements decisively.