Result description
Concrete, that is extensively applied for buildings, infrastructure and maritime applications, is the most used material after water. The downside of its popularity is associated with high environmental costs and potential durability issues. The cement industry accounts for 8% of global anthropogenic carbon dioxide emissions and around 60% of all non-renewable resources are used in construction, making it one of the least sustainable industries. If nothing changes to the concrete industry, by 2050 cement production will contribute up to 25% of the total greenhouse gasses emissions worldwide. To meet the European Green Deal and Circular Economy roadmaps, there is a clear demand for a new, sustainable generation of construction materials. Concrete technology of the DuRSAAM project fosters hybrid and Portland cement free mix designs by looking at locally available industrial by-products and alkali-activated cementitious materials (AACM), an emerging class of eco-friendly concretes.
The application of alkali-activated cementitious materials (AACMs), as cement free or hybrid binders, depends on the required design properties. We developed serveral AACM concrete mix designs, tailoring the mix components according to the physical and chemical characteristics and availability of local by-products. The high grade concrete mix designs can deliver reliable mechanical and long-term performance, and foster short business chain solutions to bring knowledge and experitse from lab to construction site.
Addressing target audiences and expressing needs
- Business partners – SMEs, Entrepreneurs, Large Corporations
We are looking for a wider base of early adopters willing to collaborate and enable to commercialise AACM concrete technology at a large scale. The key of success relies on the relieance of industrial partners who have the equipment to product these binders in the amounts of thousands of tons per year. Parallely, the involvement of policy makers should enable standards for low carbon binder products based on their performance rather than their composition, as the latter fosters a family of AACM concretes with local by-product sources.
- EU and Member State Policy-makers
- Other Actors who can help us fulfil our market potential
- Private Investors
R&D, Technology and Innovation aspects
DuRSAAM developed several AACM mix formulations and demonstrated their workability, mechanical and durability performance, as well as their life cylce impact. Currently, demonstration projects are increading in Europe which show-case real-life construction applications of AACM concrete based on local by-products. These demonstrators are exemplary for the next step to grow on the number of early adopters of this concrete technology and tackling the associated upscaling challenges. Intial steps to issue regulations and standardization need further focus, as well as implementation of good practices of green procurement fostering eco-friendley concrete technologies.
The AACM concrete technology is scalable, being fully compatible with concrete mixing plants and concrete placement technologies. Nevertheless, investments may be needed in terms of factory proof mix development, quality benchmarking, additional silos with the secondary raw materials added to the concrete ingredients, and dosing systems for the activators.
The replicability of AACM concrete mix designs in factory production environment is not yet fully consistent, and part of ongoing upscaling studies. This relates to inherent chemical and physical variability of the industrial by-products and varability of factory production environment parameters, indicating the necessity to implement adapted mix design procedures and production protocols to guarantee performance achievement. Regulations or guidelins to foster quality control and improved reproducibility of mix design formulations need to emerge futher. A broader commercial and mediatic exposure would increase the trust and experience in this innovative material to be used at wider scale.
AACM concrete can be designed for specific applications where they have similar or superior properties to cement concrete. From environmental perspective, AAM mixes can have up to 70% lower CO2 emissions. From the social perspective, using local by-products in AACMs not only reduces dependability on primary materials, but can reduce reliability on imports, thereby ensuring local economic growth. From the technological perspective, they can be manufactured at room or slightly elevated temperature (up to 80°C), compatible with existing concrete manufacturing and placement tehcnologies.
- Global
Result submitted to Horizon Results Platform by EIDGENOESSISCHE TECHNISCHE HOCHSCHULE ZUERICH

