| Issue |
MATEC Web Conf.
Volume 352, 2021
EDES 2021 - Extraordinary Dynamic Experiments and Simulations 2021
|
|
|---|---|---|
| Article Number | 00005 | |
| Number of page(s) | 6 | |
| DOI | https://doi.org/10.1051/matecconf/202135200005 | |
| Published online | 03 December 2021 | |
Impact response of various concretes at 2.8-second drop shaft
1 Experimental Centre, Faculty of Civil Engineering, Czech Technical University in Prague, Thákurova 7, 166 29 Prague, Czech Republic
2 Department of Concrete and Masonry Structures, Faculty of Civil Engineering, Czech Technical University in Prague, Thákurova 7, 166 29 Prague, Czech Republic
3 Centre of Experimental Geotechnics, Faculty of Civil Engineering, Czech Technical University in Prague, Thákurova 7, 166 29 Prague, Czech Republic
4 Department of Forensic Experts in Transportation, Faculty of Transportation Sciences, Czech Technical University in Prague, Horská 3, 128 03 Prague 2, Czech Republic
* Corresponding author: sovjak@fsv.cvut.cz
This paper presents experimental testing of various types of concrete under impact loading by using a 2.8-second drop shaft. The drop shaft is located in the Josef Underground Laboratory and allows dropping a projectile from 40 meters that results in a maximal velocity of 100 km/h. Three basic types of concrete were used in the framework of this study. This was normal strength concrete, fibre-reinforced concrete, and high-performance fibre-reinforced concrete. The slabs were constructed 1700 mm × 500 mm × 70 mm in size and the clear span of the impacted slab was 1500 mm. Damage of the slab was recorded and the velocity of the projectile was measured with the high-speed camera before and after the impact. It was demonstrated that high-performance fibre-reinforced concrete has a higher ability to absorb and dissipate the kinetic energy of the impact that their lower strength counterparts.
© The Authors, published by EDP Sciences, 2021
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