Abstract
Strain Hardening Cementitious Composite (SHCC) is an innovative material which, due to the special material composition and the addition of fibres, exhibits a controlled microcracking behaviour under tensile stresses. As such it might be a promising material for improvement of durability of concrete structures.
An experimental study was performed aiming to investigate the cracking behaviour of reinforced concrete beams enhanced with SHCC layers in the tension zone (hybrid SHCCconcrete beams). Specimens with SHCC layers of different thickness were tested. The hybrid SHCC/concrete beams were compared to regular reinforced concrete (control) beams with the same dimensions and rebar position. Specimens were tested in four-point bending while Digital Image Correlation (DIC) and an image analysis software package (ImageJ) were used to evaluate crack pattern development and crack widths. In the experiments, hybrid beams showed better cracking behaviour compared to control beams, whereas also a higher bending moment capacity was found. The study indicates that by using a combination of conventional concrete and advanced concrete (SHCC in this case), possibly optimal design of reinforced concrete structures could be achieved by eliminating the crack width as governing design parameter and thus saving on reinforcement needed for crack width control.
An experimental study was performed aiming to investigate the cracking behaviour of reinforced concrete beams enhanced with SHCC layers in the tension zone (hybrid SHCCconcrete beams). Specimens with SHCC layers of different thickness were tested. The hybrid SHCC/concrete beams were compared to regular reinforced concrete (control) beams with the same dimensions and rebar position. Specimens were tested in four-point bending while Digital Image Correlation (DIC) and an image analysis software package (ImageJ) were used to evaluate crack pattern development and crack widths. In the experiments, hybrid beams showed better cracking behaviour compared to control beams, whereas also a higher bending moment capacity was found. The study indicates that by using a combination of conventional concrete and advanced concrete (SHCC in this case), possibly optimal design of reinforced concrete structures could be achieved by eliminating the crack width as governing design parameter and thus saving on reinforcement needed for crack width control.
| Original language | English |
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| Title of host publication | Proceedings of the Workshop on Concrete Modelling and Material Behaviour in honor of Professor Klaas van Breugel |
| Subtitle of host publication | Special "Klaas van Breugel" Sessions during the Rilemweek 2018 |
| Editors | Guang Ye |
| Publisher | Rilem |
| Pages | 176-184 |
| Number of pages | 8 |
| Volume | PRO 126 |
| ISBN (Electronic) | 978-2-35158-215-2 |
| ISBN (Print) | 978-2-35158-214-5 |
| Publication status | Published - 2018 |
| Event | Workshop on Concrete Modelling and Materials Behaviour in Honor of Professor Klaas van Breugel - Lijm & Cultuur, Delft, Netherlands Duration: 27 Aug 2018 → 29 Sept 2018 |
Conference
| Conference | Workshop on Concrete Modelling and Materials Behaviour in Honor of Professor Klaas van Breugel |
|---|---|
| Country/Territory | Netherlands |
| City | Delft |
| Period | 27/08/18 → 29/09/18 |
| Other | Special "Klaas van Breugel" Sessions during the Rilemweek 2018 in honour of the retirement of Professor Klaas van Breugel |