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CONCRETE PRODUCTS & CAST STONEwww.cpi-worldwide.com CPI %u2013 Concrete Plant International %u2013 1 | 2026and \tiveness of the concrete industry. If you want to avoid production-related disadvantages when using CO2-reduced cement, you need to focus on the curing process.The slower reaction and lower hydration heat resulting from CO2-reduced cements require at least maximum utilisation of this heat through good insulation of the climate chamber and a good recirculation system that distributes the heat evenly. Whether this is sufficient depends on several factors, including how many layers are produced and how high the cement content is. However, it can be expected that, sooner or later, active heating of the curing chamber will become indispensable. Nevertheless, active heating is a good way of counteracting the current trend in cement development. This is because the Arrhenius equation, which is well known in chemistry, shows that the reaction rate of a chemical reaction increases with higher temperatures. This fact is illustrated very Diagram 1: Hydration heat as a function of cement classDiagram 2: Measured heat flow of technical white cement at different temperatures (source: Christoph Hesse, Reaction process of early hydration of Portland cement in relation to temperature, Friedrich Aleksander University ErlangenN%u00fcrnberg) Hydration heatWhite cement, W/C = 0,5Heat flow [mW/gpaste]Time [h]www.frima-emden.deMADE INGERMANYMachines