MATEC Web Conf.
Volume 352, 2021EDES 2021 - Extraordinary Dynamic Experiments and Simulations 2021
|Number of page(s)||6|
|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: firstname.lastname@example.org
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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