Are new magnesia-based cements the future?
Part 1: Analysis of former developments

$1 Average fraction of different cement-based products in cement consumption in Germany 2008 [15]$

1 Average fraction of different cement-based products in cement consumption in Germany 2008 [15]

2 The development of global cement production 1990-2008 according to data from the U. S. National Geological Survey Minerals Information Center [14]

3 Global magnesite deposits: World reserves: > 12 Billion t magnesite, of which 51 % are from Chinese-North Korea sparry magnesite province [11]

Source/Quelle: Prof. Dr. Pöllmann

4 Brucite crystallization in a grout

Source/Quelle: Prof. Dr. Pöllmann

Magnesia producing plant

To decrease CO₂ emissions in the cement industry, new cement-based binders are in the focus of attention, especially calcium-based systems, geopolymers and new magnesia binders.

1 Introduction

Modern construction materials are based on the hydraulic binder Portland cement, mainly used for manufacturing concrete and next to water, the globally most used material. Currently worldwide more than one tonne of concrete is produced per capita every year.

Cement is mainly used for in-situ concrete and prefabricated construction elements made from concrete. To satisfy this demand in Germany more than 80 % of the cement produced is required (Fig. 1). Plaster, mortar and floating screed as well as special binders like adhesives based on cement are quantitatively only of lower...

Issue 2012-03

Are new magnesia-based cements the future? Part 2: Novacem an assessment of new developments

Over the past 170 years concrete based on Ordinary Portland cement (OPC) is the material basis of the construction industry. Next to water concrete is the globally most used material nowadays [1]....

Issue 2016-9 US 2016/0207834 A1

Binder comprising calcium sulfoaluminate cement and a magnesium compound

(22) 02.09.2014 (43) 21.07.2016 (57) The present invention relates to a binder comprising calcium sulfoaluminate (CSA) cement and a magnesium compound, to a method of enhancing strength development...

Issue 2021-3 US 2020/0407275 A1

Composition of a cement additive material as an additive to cementitious mineral admixtures, and utilized as latent hydraulic binders to improve the outcome of cementitious products

(22) 11.09.2020 (43) 31.12.2020 (57) A composition of a cement additive material to improve durability of cementitious structures, was disclosed. The cement additive composition includes an admixture...

Issue 2020-3 REFRATECHNIK GROUP

Refratechnik expands in the raw material sector

The Refratechnik Group have announced that they have entered into a share purchase agreement to acquire 100?% of QMAG Ltd., an Australian magnesia producer. QMAG (Queensland Magnesia) is a fully...

Issue 2013-05

Smart refractory solution for stress loaded rotary kilns

1 Introduction Increasing the service life of refractory bricks is a significant contribution to the efficiency of cement kilns and higher environmental protection, because less refractory material...