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Design and function of novel polymeric admixtures for more durable high performance concrete

Exploitable results

The new polymers have improved compatibility with different cements compared to the state-of-the-art polymers available today. This will solve problems that occur with some cements, making the concrete mix design more robust. The new polymers can be used in SCC and (other) high performing concrete - which normally has a very low w/c-ratio. Many existing SPs have performance problems at very low w/c-ratio. The new polymers developed here overcome these limitations. It was obvious from the results of the concrete testing carried out in the project that the method of mixing of the concrete had big impact on the admixture effect. These results will be published and also communicated to CEN. The results indicate a need for revision of the EN standard defining concrete admixture laboratory testing.
The incompatibility between cement and the polymers that is normal with state-of-the-arte polymers is reduced (eliminated). This makes the new polymers much more easy to use with cements containing high amount of fly ash, silica fume and other pozzolanic materials. This will make it possible to increase the use of these cements and pozzolanic materials, and thus increase the utilisation of industrial by-products.
Techniques were developed to study the interaction between the new polymers and experimental polymers, and model powders, fly ash, silica fume and cement. The understanding of the dispersing mechanisms of these polymers was increased. Technical contacts with potential users of the materials and market research will be facilitated by strategic dissemination of the research into the user community through attendance at conferences, seminars and exhibitions and the issue of briefings in appropriate technical magazines. This can start as soon as the results are ready for publication. The research institute and the universities will also use the information in other projects, helping European companies in their research and development.
In the project a thorough study of the interaction between model powders and super-plasticizers was done. This has resulted in a huge step forward in the understanding of these interactions and the results are of great value to the industrial partners in the project. Techniques were developed to study the interaction between the new polymers and model powders. Technical contacts with potential users of the materials and market research will be facilitated by strategic dissemination of the research into the user community through attendance at conferences, seminars and exhibitions and the issue of briefings in appropriate technical magazines. This can start as soon as the results are ready for publication. The research institute and the universities will also use the information in other projects, helping European companies in their research and development.

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