期刊
COMPOSITE STRUCTURES
卷 208, 期 -, 页码 806-815出版社
ELSEVIER SCI LTD
DOI: 10.1016/j.compstruct.2018.10.071
关键词
UHPFRC; Impact responses; Post-impact properties; Repeated pendulum impact; Damage index; Analytical modelling
资金
- China Scholarship Council
- Eindhoven University of Technology
- Rijkswaterstaat Grote Projecten en Onderhoud
- Graniet-Import Benelux
- Kijlstra Betonmortel
- Struyk Verwo
- Attero
- Enci
- Rijkswaterstaat Zee en Delta-District Noord
- Van Gansewinkel Minerals
- BTE
- V.d. Bosch Beton
- Selor
- GMB
- Icopal
- BN International
- Eltomation, Knauf Gips
- Hess AAC Systems
- Kronos
- Joma
- CRH Europe Sustainable Concrete Centre
- Cement Beton Centrum
- Heros
- Inashco
- Keim
- Sirius International
- Boskalis
- NNERGY
- Millvision
- Sappi
- Studio Roex
The present research aims to understand the response and post-impact properties of ultra-high performance fibre reinforced concrete (UHPFRC) under low-velocity impact. An UHPFRC applying coarse basalt aggregate is developed by using the optimized particle packing theory and considering the mineral oxide engineering and steel fibre utilization. A reliable low-velocity impact method employing pendulum impact test set-up is designed and applied. The results show that the residual strength of UHPFRC beams after impact follows '-e(x)' law with the number of impact, while the residual rigidity, toughness and impact resistance tend to linearly decrease. The rigidity and toughness are more appropriate indicators than ultimate bearing capacity based on the analysis on damage index. An analytical model is proposed to predict the residual impact resistance of UHPFRC beams with the static property of flexural toughness and validated against the experimental data.
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