[1] Lai Jianzhong, Sun Wei, Lin Wei, Jin Zuquan, et al. Static and dynamic mechanical behaviour of ECO-RPC [J]. Journal of Southeast University (English Edition), 2005, 21 (2): 197-202. [doi:10.3969/j.issn.1003-7985.2005.02.016]
Copy
Static and dynamic mechanical behaviour of ECO-RPC(
)
)Journal of Southeast University (English Edition)[ISSN:1003-7985/CN:32-1325/N]
- Volumn:
- 21
- Issue:
- 2005 2
- Page:
- 197-202
- Research Field:
- Materials Sciences and Engineering
- Publishing date:
- 2005-06-30
Info
- Title:
- Static and dynamic mechanical behaviour of ECO-RPC
- Author(s):
- Lai Jianzhong; Sun Wei; Lin Wei; Jin Zuquan
- Department of Materials Science and Engineering, Southeast University, Nanjing 210096, China
- Keywords:
- ecological reactive powder concrete(ECO-RPC); industrial waste powder; interfacial bond strength; fracture energy; static and dynamic mechanical behaviour; high strain rate
- PACS:
- TU52
- DOI:
- 10.3969/j.issn.1003-7985.2005.02.016
- Abstract:
- Ecological reactive powder concrete(ECO-RPC)with small sized and different volume fraction steel fibers was prepared by substitution of ultra-fine industrial waste powder for 50% to 60% cement by weight and replacement of ground fine quartz sand with natural fine aggregate.The effect of steel fiber volume fraction and curing ages on the static mechanical behaviour of ECO-RPC was studied.Using the split Hopkinson pressure bar technique, the dynamic mechanical behaviour of ECO-RPC was investigated under different strain rates.The results show that the static mechanical behaviour of ECO-RPC increases with the increase of steel fiber volume fraction and curing ages.The type of ECO-RPC with the substitution of 25% ultra-fine slag, 25% ultra-fine fly ash and 10% silica fume is better than the others with compressive strength, flexural strength, and fracture energy more than 200 MPa, 60 MPa and 30 kJ/m2, respectively.ECO-RPC has excellent strain rate stiffening effects under dynamic load.Its peak stress, peak strain and the area under strain-stress curve increase with the increase of strain rate.Its fracture pattern changes from brittleness to toughness under high strain rates.
References:
[1] Bonneau Oliver, Poulin Claude, Dugat Jerome, et al.Reactive powder concrete:from theory to practice [J].Concrete International, 1996, 18(4):47-49.
[2] Richard P, Cheyrezy M.Composition of reactive powder concrete [J].Cement and Concrete Research, 1995, 25(7):1501-1511.
[3] Cheyrezy Marcel.Structural applications of RPC [J].Concrete, 1999(1):20-23.
[4] Bonneau Oliver, Lachemi Mohamed, Eric Dallaire, et al.Mechanical properties and durability of two industrial reactive powder concretes [J].ACI Materials Journal, 1997, 94(4):286-290.
[5] Casanova P, Dugat J, Orange G.Ductal<sup>○R:a new generation of ultra high performance fiber reinforced concrete[A].In:Leung Christopher K Y, Li Zongjin, Ding Jiantong, eds.International Symposium on High Performance Concrete—Workability, Strength and Durability[C].Hong Kong:The Hong Kong University of Science and Technology, 2000, 2:853-859.
[6] Bayard O, Plé O.Fracture mechanics of reactive powder concrete:material modelling and experimental investigations[J].Engineering Fracture Mechanics, 2003, 70(7, 8):839-851.
[7] Chan Yin-Wen, Chu Shu-Hsien.Effect of silica fume on steel fiber bond characteristics in reactive powder concrete[J].Cement and Concrete Research, 2004, 34(7):1167-1172.
[8] Sun W, Liu S, Lai J.Study on the properties and mechanism of ultra-high performance ecological reactive powder concrete[A].In:Naaman A E, Reinhardt H W, eds.Proc of the 4th International RILEM Workshop on High Performance Fiber Reinforced Cement Composites[C].Bagneux:The Publishing Company of RILEM, 2003.409-417.
[9] Stéphanie Staquet, Bernard Espion.Influence of cement and silica fume type on compressive strength of reactive powder concrete [A].In:Leung Christopher K Y, Li Zongjin, Ding Jiantong, eds.International Symposium on High Performance Concrete—Workability, Strength and Durability [C].Hong Kong:The Hong Kong University of Science and Technology, 2000, 2:861-866.
[10] He F, Huang Z Y.Study on the preparation of 200-300 MPa reactive powder concrete [J].China Concrete and Cement Products, 2000(4):3-7.(in Chinese)
Memo
- Memo:
- Biographies: Lai Jianzhong(1978—), male, graduate;Sun Wei(corresponding author), female, professor, sunwei@seu.edu.cn.