The city as raw materials source

Placing recycled concrete on the market

Diminishing raw materials, dense traffic and complex logistics are much-discussed topics. These issues are accompanied by the goals of minimizing negative environmental effects, closing materials cycles, and preserving raw materials. “Mine the city – utilizing the city as raw materials source” – is a topic of the future. This is the field of tension in which the concrete industry also finds itself trying to find the right balance. At Holcim, the construction engineer Hagen Aichele is responsible for the company concrete division in southern Germany and early addressed the demands that society,...

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Issue 01/2022

Sustainable architectural concrete – recycled concrete façade for the new city hall in Korbach

The new city hall ensemble in the center of Korbach in the State of Hesse in Germany was recently completed following comprehensive restoration and modernization measures. The aesthetic...

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Issue 02/2019 Concrete engineering

Sprayable, structurally dense lightweight concrete

Cement-aggregate mixtures have been sprayed for well over 100 years [1]. Developments in process and concrete engineering made since that time enable shotcretes to be processed re-liably today in both...

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Issue 06/2022

Recycled and translucent concretes – Innovative precast solutions in architectural concrete

The town hall of Korbach has been a central and characteristic point of contact for the town’s citizens for many decades. As the existing building added to the historic town hall in the 1970s was...

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Issue 03/2025

Using recovered and recycled mineral aggregates in precast elements – The new FDB Code of Practice

Conserving our natural resources effectively is one of the most important socio-political goals of our time. This includes meeting the demand for materials in the construction industry in a way that...

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Issue 05/2024

Replacement of natural lightweight concrete aggregates with recycled material

In the Eifel region, pumice has been a “constant” in the production of lightweight concrete blocks for many decades. More recently, however, there has been a significant decline in production...

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