Advanced fibre-reinforced polymer (FRP) composites have been widely used for strengtheningconcrete structures. The bond behaviour between FRP and concrete plays the crucial role in thistechnique. Commonly the test of this bond behaviour is conducted using a single or double shear pulloff test of an FRP-to-concrete bonded joint, or similar bending tests. Such test setups are usuallymodelled as a two dimensional (2D) plane stress or plane strain structure. However, the test setup is inreality a three-dimensional (3D) structure due to many factors. One of the main factors is that theconcrete behaviour is three dimensional because of the presence of coarse aggregates. Because ofthe random distribution of coarse aggregates in concrete, it may be expected that the non-uniformity ofstrain distribution is also random. Compared to concrete, mortar is a much more uniform material. Inthe research work presented in this paper, an experimental study is employed to investigate the straindistribution in the FRP in a bond test, where the FRP was bonded to either concrete or mortar. Theresults confirm that the presence of coarse aggregates in the concrete leads to much more variation inthe FRP strain distribution.
|Title of host publication||9th Biennial Conference on Advanced Composites in Construction 2019, ACIC 2019 03/09/2019 → 05/09/2019 Birmingham, United Kingdom: Proceedings|
|Number of pages||6|
|Publication status||Accepted - 01 Jul 2019|
|Event||9th Biennial Conference on Advanced Composites in Construction 2019, ACIC 2019 - Birmingham, United Kingdom|
Duration: 03 Sep 2019 → 05 Sep 2019
|Conference||9th Biennial Conference on Advanced Composites in Construction 2019, ACIC 2019|
|Period||03/09/2019 → 05/09/2019|