In the research project of the Federal Ministry of Education and Research nanooptimized ultra high performance concrete is developed for multifunctional roads. Ultra high performance concrete (UHPC) is durable, robust, bearing and fine-grained. Thus it is appropriate for realizing specially designed low noise road surface textures achieving pass-by level reductions up to 5 dB and at the same time providing good grip. In a joint project with nine partners these textures were to be produced in road surfaces made from UHPC.
The main tasks included adapting the composition of the UHPC to the purposes of site mixing and texturing, adapting the predefined texture and the texturing method to the specific characteristics of UHPC, reducing the energy consumption required for producing the UHPC-compound by 40 % compared to standard UHPC-mixes. Appropriate mixing and construction technologies for on site construction in UHPC were developed.