Limestone-based green cements

Predicting concrete shrink-behavior

The cement industry generates about 6% of global CO2 emissions that are primarily caused by the production of Portland cement clinker. A reduction in the clinker content of cement and concrete and its substitution by increasingly adding limestone-based cements is found to be one of the most efficient approaches to reducing the greenhouse gas potential of concrete production. In a research project, concrete made of cement with 50 wt.-% of limestone and a reduced water-cement-ratio of 0.35 proved to exhibit sufficient properties in its fresh and hardened state whilst significantly lowering CO2...

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Issue 02/2015 Production, curing, environmental impact

State-of-the-art concretes containing cements with a reduced clinker ratio

Concrete is the most widespread construction material of our times – about 12 billion m3 of concrete are produced worldwide each year. The manufacture of cement, as one of the raw materials of...

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Issue 01/2013

Admixtures for shrink reduction of Portland cement-based mortars and concretes

(10) WO 2012/162292 A2 (22) 22 May 2012 (43) 29 November 2012 (71) PREMIER MAGNESIA, LLC [US/US]; 300 Barr Rarbor Drive, Suite 250, West Conshohocken, Pennsylvania 19428 (US) (57)  Portland...

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Issue 02/2020 Concrete technology

Measures to reduce CO2 emissions

More than 6 % of the worldwide carbon dioxide (CO2) emissions caused by humans are associated with the production of cement and concrete. It is a known fact that a purposeful substitution of the...

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Issue 03/2025

Future prospects in cement technology: What lies ahead?

Around 80 % of the CO2 footprint in concrete production results from cement production. Production of cement clinker, in particular, results in high specific CO2 emissions of 800 kg/t on the average....

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Issue 02/2015 New binders and surface technologies

Prospects in concrete technology

With a world-wide annual production of more than 10 billion m³ and the respective surfaces, concrete has been the most frequently used building material all over the world for more than a century....

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