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Issue 05/2024

CO2-optimized precast elements – ecology, economy, performance and durability

Successive reduction of CO2 emissions in production of precast elements is a central challenge for many manufacturers of precast elements and other concrete products. The means available in this...

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Issue 05/2024

Yellow print of DafStb code of practice “Greenhouse-gas reduced concrete, reinforced or prestressed concrete”

The building industry and here, in particular, concrete construction, due to the CO2 emissions involved, significantly contribute to climate change. Although concrete, compared to other materials,...

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Issue 05/2024

CO2 reduction through machine-made reinforcement mats made of basalt fiber-reinforced polymer

As part of the “RebWeave” project, the universities of Aalen and Ulm are cooperating with Zweigart & Sawitzki GmbH & Co. KG and C-Con GmbH & Co. KG to develop a process suitable for the series...

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Issue 05/2024

Carbon Composite Joint Profiles – The durable solution for structural joints

Owner-managed FloorBridge International GmbH, based in Austria, has been manufacturing joint profiles for structural, movement and construction joints in carbon fiber composite design since 2012. This...

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Issue 05/2024

CFRP shaped bars – Conventional production of reinforcement for carbon concrete

Non-metallic types of reinforcement currently available on the market are mainly offered in flat shapes such as straight bars or grids. Special non-metallic form reinforcements, which are required for...

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Issue 05/2024

Use of carbon short fibers in ultra-high performance concrete (C-UHPFRC) – Optimisation approaches

C-UHPFRC is an innovative material that is characterized by its high strength and the formation of very fine multi-cracks. Non-metallic carbon fibers combined with a ultrahigh-strength concrete matrix...

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Issue 05/2024

Limitation of crack width in non-metallic reinforced concrete components

With the introduction of the DAfStb Guideline “Concrete members with non-metallic reinforcement”, the verification of crack width limitation is standardized for the use of non-metallic reinforcement...

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Issue 05/2024

Ultra-High Performance Concrete (UHPFRC): Practical experiences of executed projects

Implenia executed its first projects in Germany in 2023 based on Swiss SIA 2052 standard. To date, the repair of bus lanes or the production of precast concrete components as prototypes for...

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Issue 05/2024

Precast carbon concrete parts: Conserving resources and truly economical (designed)

Carbon concrete has become increasingly established in recent years as a new composite material. It is frequently associated with qualities such as sustainable, economical and resource-efficient. As...

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Issue 05/2024

DAfStb booklet 660: “Concrete components with non-metallic reinforcement (DAfStb booklet 660)”

The first edition of the DAfStb guideline for “Concrete members with non-metallic reinforcement”, prepared by the DAfStb subcommittee “Non-metallic reinforcement”, was published in January 2024. The...

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