Concrete Composites

The aim of this project is to develop novel concrete composites of modern engineered textiles with nano modified and/or polymer-modified cementitious binders. Further by using the pore solutions as electrolyte and the conductive polymer fibers as the anode (and reinforcement metals as the cathode) the next aim will be able to develop a concept of energy storage in concrete structures.

There is an interesting interest in concrete composites for thins structures. Naaman et al (2005) studied high performance hybrid composites for thin cementitious products. In Germany a large collaborative programme has been carried out to develop textile-reinforced concrete (Schlesser at al 2006). Here the combination of technology and compatibility between different materials will be studied. Specific tasks include investigating and developing new binders as matrices for novel concrete composites. Further, textile structures which are compatible with cementitious or geopolymeric matrices will be studied as well as polymeric fillers with non-linear behavior that can be triggered under specified conditions (e.g. moisture content) and technology for the combination of materials for pre-fabrication of components. Finally, the potential and limitations of the developed building components for application in the building system will be investigated.

Thermal energy storage is known phenomenon (Zhang et al 2005) and concrete has a large heat capacity. Electrochemical realkalisation and electro deposition have been reported (Ichi et al 2003, Ryou and Monteiro 2004) and the fracture properties of fibre reinforced concrete and durability issues of polymer in concrete have been well studied (Löfgren 2005, Micelli and Nanni 2004). In this project the possibility to store electric energy in concrete structures will be studied experimentally. The pore solution will be modified and polymer fibres will be tested. These fibres will also be used for load-carrying purposes and this reduces the need for ordinary reinforcement. The durability of energy storage concrete will be tested.

 

More information:

Karin Lundgren
Structural Engineering
karin.lundgren@chalmers.se

Tang Lu Ping
Building Material
luping.tang@chalmers.se