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DITF: CO2-negative construction with new composite material Photo: DITF
Structure of the wall element
20.03.2024

DITF: CO2-negative construction with new composite material

The DITF is leading the joint project "DACCUS-Pre*". The basic idea of the project is to develop a new building material that stores carbon in the long term and removes more CO2 from the atmosphere than is emitted during its production.       

In collaboration with the company TechnoCarbon Technologies, the project is now well advanced - a first demonstrator in the form of a house wall element has been realized. It consists of three materials: Natural stone, carbon fibers and biochar. Each component contributes in a different way to the negative CO2 balance of the material:

Two slabs of natural stone form the exposed walls of the wall element. The mechanical processing of the material, i.e. sawing in stone cutting machines, produces significant quantities of stone dust. This is very reactive due to its large specific surface area. Silicate weathering of the rock dust permanently binds a large amount of CO2 from the atmosphere.

The DITF is leading the joint project "DACCUS-Pre*". The basic idea of the project is to develop a new building material that stores carbon in the long term and removes more CO2 from the atmosphere than is emitted during its production.       

In collaboration with the company TechnoCarbon Technologies, the project is now well advanced - a first demonstrator in the form of a house wall element has been realized. It consists of three materials: Natural stone, carbon fibers and biochar. Each component contributes in a different way to the negative CO2 balance of the material:

Two slabs of natural stone form the exposed walls of the wall element. The mechanical processing of the material, i.e. sawing in stone cutting machines, produces significant quantities of stone dust. This is very reactive due to its large specific surface area. Silicate weathering of the rock dust permanently binds a large amount of CO2 from the atmosphere.

Carbon fibers in the form of technical fabrics reinforce the side walls of the wall elements. They absorb tensile forces and are intended to stabilize the building material in the same way as reinforcing steel in concrete. The carbon fibers used are bio-based, produced from biomass. Lignin-based carbon fibers, which have long been technically optimized at DITF Denkendorf, are particularly suitable for this application: They are inexpensive due to low raw material costs and have a high carbon yield. In addition, unlike reinforcing steel, they are not susceptible to oxidation and therefore last much longer. Although carbon fibers are more energy-intensive to produce than steel, as used in reinforced concrete, only a small amount is needed for use in building materials. As a result, the energy and CO2 balance is much better than for reinforced concrete. By using solar heat and biomass to produce the carbon fibers and the weathering of the stone dust, the CO2 balance of the new building material is actually negative, making it possible to construct CO2-negative buildings.

The third component of the new building material is biochar. This is used as a filler between the two rock slabs. The char acts as an effective insulating material. It is also a permanent source of CO2 storage, which plays a significant role in the CO2 balance of the entire wall element.

From a technical point of view, the already realized demonstrator, a wall element for structural engineering, is well developed. The natural stone used is a gabbro from India, which has a high-quality appearance and is suitable for high loads. This has been proven in load tests.  Bio-based carbon fibers serve as the top layer of the stone slabs. The biochar from Convoris GmbH is characterized by particularly good thermal insulation values.

The CO2 balance of a house wall made of the new material has been calculated and compared with that of conventional reinforced concrete. This results in a difference in the CO2 balance of 157 CO2 equivalents per square meter of house wall. A significant saving!

* (Methods for removing atmospheric carbon dioxide (Carbon Dioxide Removal) by Direct Air Carbon Capture, Utilization and Sustainable Storage after Use (DACCUS).

Source:

Deutsche Institute für Textil- und Faserforschung

Photo: Swisstulle AG
16.03.2022

Trevira CS at BIG Show im Oman

The Trevira CS brand was showcased on the German Pavilion at the BIG Show Oman, an international exhibition for building materials, construction equipment, and interior design, in Muscat, Oman. This year, BIG Show, which is part of Oman Design & Build Week, was held from March 14-16.

Trevira CS has been part of BIG Show for years, as it is an important meeting point for the exhibiting companies with interior designers, construction companies, and project managers. Important authorities from the Middle East as well as major hotel brands were present again this year. In the Middle East, important tenders for major projects are due this year. The main focus of the trade show will be on the hotel & catering and hospital & care sectors, for which Trevira CS fabrics are of great interest because they meet the safety requirements that are usually required by law.

The Trevira CS brand was showcased on the German Pavilion at the BIG Show Oman, an international exhibition for building materials, construction equipment, and interior design, in Muscat, Oman. This year, BIG Show, which is part of Oman Design & Build Week, was held from March 14-16.

Trevira CS has been part of BIG Show for years, as it is an important meeting point for the exhibiting companies with interior designers, construction companies, and project managers. Important authorities from the Middle East as well as major hotel brands were present again this year. In the Middle East, important tenders for major projects are due this year. The main focus of the trade show will be on the hotel & catering and hospital & care sectors, for which Trevira CS fabrics are of great interest because they meet the safety requirements that are usually required by law.

Trevira CS presented its extended brand concept that offers customers even more flexibility and also addresses sustainability. Building on to the high brand quality and performance, the recently introduced brands Trevira CS flexand Trevira CS eco offer properties and functions tailored to specific requirements. Furthermore, the Trevira CS Bioactive brand compliments the range, combining flame retardancy with antimicrobial properties. Fabrics bearing this brand meet the requirements for preventive fire protection and increased cleanliness.This brand concept is very well received by Trevira's customers. Many new flame retardant fabric developments embracing one of the Trevira CS brands were on display at BIG Show.

More information:
Trevira CS BIG
Source:

Trevira GmbH

FET new premises to enable expansion drive (c) FET
25.05.2021

FET new premises to enable expansion drive

Fibre Extrusion Technology Ltd of Leeds, UK has now commenced construction of a new purpose-built Research & Development Centre to enable continued growth through innovation. This modern two-storey development will be situated on the adjacent site, providing state-of-the-art facilities, including a Visitor Centre and enhanced Process Development Laboratory (PDL) for client testing and product development. Central to FET’s success has been its ability to provide customers with advanced facilities and equipment, together with unrivalled knowledge and expertise in research and production techniques. The new expanded premises will further improve this service.

Clients frequently spend several days on site participating in development trials and technical sales meetings, so the Visitor Centre is designed to make their stay more efficient and comfortable. Sales, administration and design departments will also be housed in the new building.

Fibre Extrusion Technology Ltd of Leeds, UK has now commenced construction of a new purpose-built Research & Development Centre to enable continued growth through innovation. This modern two-storey development will be situated on the adjacent site, providing state-of-the-art facilities, including a Visitor Centre and enhanced Process Development Laboratory (PDL) for client testing and product development. Central to FET’s success has been its ability to provide customers with advanced facilities and equipment, together with unrivalled knowledge and expertise in research and production techniques. The new expanded premises will further improve this service.

Clients frequently spend several days on site participating in development trials and technical sales meetings, so the Visitor Centre is designed to make their stay more efficient and comfortable. Sales, administration and design departments will also be housed in the new building.

The addition of the Visitor Centre will free up a considerable amount of space for production and other facilities in the existing premises. This major refurbishment phase for the existing premises is scheduled for completion at the end of 2021. As a result, FET’s manufacturing capacity will increase by more than 50% to cope with customer demand.  

Substantial year-on-year growth has driven this initiative and FET’s current order book in excess of £10million has provided the opportunity for equipping the company infrastructure for the future. Sustainability has been at the forefront of FET’s growth, supporting customers in their development of sustainable textiles and this principle is reflected in the choice of building materials and products for the Visitor Centre wherever possible.

It is expected that the new Visitor Centre will be opened in the first quarter of 2022.

Source:

Project Marketing Ltd