KARLSRUHE INSTITUTE OF TECHNOLOGY (KIT)

New calcium hydrosilicate-based cements: Celitement – a Technology Assessment

Green cements with the potential to significantly reduce CO2 emissions are still in the focus of attention in the cement industry. This paper outlines the approach of Technology Assessment and the research design, gives a brief overview of the binder characteristics of Celitement technology (calcium hydrosilicates) and discusses the resource availability. A model of a plausible manufacturing process of Celitement is given, followed by a discussion of the corresponding balances. Finally the paper summarizes the implications which can be derived from the perspective of Technology Assessment and innovation research.

1 Introduction

It is generally agreed that radical reductions of CO2 emissions cannot be realized maintaining the paradigm of traditional clinker production. Even more efficient combustion technologies, rising shares of traditional clinker substitutes and more efficient process technologies are not sufficient to meet reduction targets, even those of the Cement Sustainability Initiative [1, 2]. End-of-pipe technologies like CCS are still discussed as an essential part of the solution within the cement community [3]. This may raise false hopes for solutions in the  distant future whose technical...

Related articles:

Issue 3/2020 UNIVERSITY OF THE WITWATERSRAND

A novel approach in the assessment of carbonate rock types for calcination in modern vertical kilns in Southern Africa

1 Introduction In Southern Africa, the most recent large-scale lime kiln projects have seen the installation of modern vertical kilns instead of rotary kilns which have mainly been used since the...

more
Issue 8/2023 US 2023/0312412 A1

Limestone Calcined Clay Cement (Lc3) Construction Composition

(22) 25.08.2021 (43) 05.10.2023 (57) A limestone calcined clay cement construction composition comprises a) a cementitious binder comprising one or more calcium silicate mineral phases and one or more...

more
Issue 3/2022 WO 2022/043349 A1

Limestone calcined clay cement (LC3) construction composition

(22) 25.08.2021 (43) 03.03.2022 (57) A limestone calcined clay cement construction composition comprises a) a cementitious binder comprising one or more calcium silicate mineral phases and one or more...

more
Issue 5/2019 US 2019/0071354 A1

Use of quarry fines and/or limestone powder to reduce clinker content of cementitious compositions

(22) 05.11.2018 (43) 07.03.2019 (57) Quarry fines and/or limestone powder are used to reduce clinker content in concrete, mortar and other cementitious compositions, typically in combination with one...

more
Issue 10/2020 CALUCEM GMBH

Calcium Aluminate Cement for corrosion resistant sewer mortars and concretes

1 Introduction Sewage systems are used to collect the wastewater of cities and to transport them to sewage treatment plants. These systems are extensive and commonly made of concrete. Concretes and...

more