Memory steel connectors for carbon-reinforced concrete components

Figure: Pohlcon

Fig. 1: Forming and activation process with a) compressing, b) insertion, c) activation and generation of the clamping force

Figure: Pohlcon

F. 2: Tensile test under
laboratory conditions

Figure: Pohlcon

Fig. 3: Incomplete use of the functional area [cf. 7]

Figure: Pohlcon

Fig. 4: Test results from tensile tests, comparison of different specimen geometries

Figure: Pohlcon

Fig. 5: Practical implementation of the new connection concept with a) façade panels evenly aligned with each other ...

Figure: Pohlcon

... and b) cross-story façade panel

Figure: Pohlcon

Fig. 6: Discolored temperature indicator on the contact surface after activation

Figure: Pohlcon

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Solutions for fastening and connecting thin-walled carbon-reinforced concrete structures were tested within the framework of a research project on “Thermally Activated Connecting Elements in Modular Construction”. Carbon-reinforced concrete is increasingly becoming the focus of attention in the construction industry as an innovative alternative to standard reinforced concrete.

A new type of connector for thin-walled carbon-reinforced concrete components was developed on the basis of shape memory alloys and used as a stable, force-locked and linear connection for large façade elements made of carbon-reinforced concrete. Solutions for fastening and connecting thin-walled carbon-reinforced concrete structures were tested within the framework of the TAVIMBA (thermally activated connecting elements in modular construction) research project. Due to its sustainable, resource-efficient and material-saving properties, carbon-reinforced concrete is increasingly becoming the...