A new testing method to investigate the compacting behavior of fresh concretes under impact loading

Abstract : This paper presents a new instrumented Proctor test using a Hopkinson bar which allows for the original measurement of forces and velocities during the impact loading on soft fresh concrete samples. For this purpose, the specific points of using low impedance Nylon bar as well as the two-point measurement method to recover coupled waves are discussed. The whole test consists of successive impacts of low velocity (less than 3 m/s) exerted on the compressible specimen of a fresh concrete. The proposed original measurement allows for a quantitative comparison of the behaviour of the fresh concrete submitted to quasi-static and impact compaction. It shows that impact compaction is more efficient than quasi-static case. However, the increase of the impact velocity seems to reduce the efficiency. There exists probably an optimal loading path. The further understanding of the behaviour of fresh concrete under low velocity impact should be an interesting way to improve the industrial compacting process.
Complete list of metadatas

Cited literature [19 references]  Display  Hide  Download

https://hal.archives-ouvertes.fr/hal-01004916
Contributor : Gilles Marckmann <>
Submitted on : Monday, February 6, 2017 - 2:26:37 PM
Last modification on : Saturday, May 25, 2019 - 1:43:20 AM
Long-term archiving on : Sunday, May 7, 2017 - 2:19:31 PM

File

PPTZ.pdf
Files produced by the author(s)

Licence


Distributed under a Creative Commons Attribution 4.0 International License

Identifiers

Citation

Stéphane Pattofatto, Arnaud Poitou, H. Tsitisiris, Han Zhao. A new testing method to investigate the compacting behavior of fresh concretes under impact loading. Experimental Mechanics, Society for Experimental Mechanics, 2006, 46 (3), pp.377-386. ⟨10.1007/s11340-006-6419-3⟩. ⟨hal-01004916⟩

Share

Metrics

Record views

232

Files downloads

145