The collaborative research centre „Textile Reinforced Concrete (TRC) – Development of a New Technology“ (SFB 532) established at Aachen University (RWTH Aachen) is investigating the basic mechanisms of the new composite material. As the fine grained binder systems used show…
The collaborative research centre „Textile Reinforced Concrete (TRC) – Development of a New Technology“ (SFB 532) established at Aachen University (RWTH Aachen) is investigating the basic mechanisms of the new composite material. As the fine grained binder systems used show a more homogeneous structure compared to ordinary concrete the material properties of this component have to be known. Hence, it is the objective of the presented investigations to determine the softening behaviour of the concrete. 3-point bending tests are carried out, and a model is proposed which allows the analytical derivation of a multi-linear σ-w-relation without using FE-analysis. Measurements with a video extensometer give the displacements over the ligament height in the cracking zone during loading and allow the derivation of the corresponding input parameters. First results show a good agreement with the tension softening behaviour derived by FE-analysis.