Concrete is a bulk commodity and the building material par excellence, also globally. The cement industry contributes 7 to 8 percent of global CO2 emissions. And concrete consumption is rising. SCHWENK Zement is not only a partner of Global Energy Solutions, but also one of the oldest family-owned companies in the German building materials industry, with 175 years of experience. In an interview with GES Patrik Schleicher outlines SCHWENK’s plans for low CO2 concrete. Two-thirds of the emissions are process-related; they occur during the deacidification of limestone. In the future, SCHWENK wants to concentrate, capture, and liquefy the CO2 in the exhaust gas stream – in order to process it further, for example into fuel for aviation. However, technology is one thing, but the whole thing must also pay off.