New polymorphous CaCO3-based ­cementitious materials Part 2: Calera – a technology assessment

 “Green cements” with the potential to significantly reduce CO2 emissions are still in the focus of attention in the cement industry.

1 Introduction

Due to the high CO2 emissons of conventional cement production currently a range of concepts for alternative “green cement” is investigated by engineers and researchers from within and outside the cement community. All of these approaches aim to partly reduce or even replace Ordinary Portland Cement (OPC). Due to the claimed potentials as well as the expectable effects it is the aim of the Institute for Technology As­sessment and Systems Analysis (ITAS) work to assess these approaches in how far they really can lead to mass construction materials and compete against OPC. This...

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