Abstract
In this paper, the mechanical property of damaged concrete after impact was investigated. Firstly, the specimen was crushed by using drop hammer impact test machine in order to cause initial damage. Then compression-after-impact tests were carried out to examine and compare the damage responses of the specimens, and some stress-strain curves of the specimens under different damage degrees were obtained. Test parameters, such as the strength grade, height of the fall and drop weight were studied. The damage behaviors of the 24 tested specimens with the acquired UT (ultrasonic test) data were analyzed. The experiment results indicate that using UT to test the damage of concrete is highly sensitive; Concrete elastic modulus and compressive strength after impact are reduced. Brittle fracture of the concrete specimen after impact is remarkable.
| Translated title of the contribution | Experimental study on damage properties of concrete subjected to impact |
|---|---|
| Original language | Chinese (Simplified) |
| Pages (from-to) | 58-64 |
| Number of pages | 7 |
| Journal | Journal of Building Structures |
| Volume | 35 |
| Issue number | Suppl. 1 |
| Publication status | Published - 2014 |