Experimental Study of Continuity Resistance between Usual and Ultra High Performance Concrete

Document Type : Research Paper

Authors

1 Professor, School of Engineering, University College of Engineering, University of Tehran, Tehran, Iran

2 M.Sc. of Structural Engineering, School of Engineering, University College of Engineering, University of Tehran, Tehran, Iran

3 B.Sc. of Civil Engineering, School of Engineering, University College of Engineering, University of Tehran, Tehran, Iran

Abstract

The unique properties and characteristics of ultra-high performance concrete as a new material in civil engineering have brought exciting new horizons to the designers. One of these design horizons that could be very applicable in the future is the idea of a composite of ultra-high performance and usual concrete, which has been put forward to make maximum use of the material capacity. This idea is useable in both of the new construction and repair (improvement) of existing structures. As studies and practical applications have shown, composite of usual and ultra-high performance concrete than original concrete structures will be stronger and durable. However, in any composite structures, the integrated performance of the materials is very important and this integrated performance will make through the interconnection resistance between materials. Also, as regards to the newness of composite the ultra-high performance and usual concrete, limited studies were conducted about to continuity strength between these materials. Therefore, the present research is one of a part in the collection studies related to applicable ultra-high performance concrete in faculty of engineering of Tehran University, continuity strength between usual and ultra-high performance concrete with using ordinary tests in a different mode of base concrete preparation has been studied. According to the results of this study, the continuity of the strength between the two materials is highly dependent on the basic concrete level preparation conditions and, if proper level preparation is carried out, will result in better conditions than even the reference standards

Keywords

References

1- Richard, P., and Cheyrezy, M., 1995, Composition of reactive powder concretes, Cement and concrete research, Vol.25, No.7, pp.1501-1511.
2- Cheyrezy, M., Maret, V., and Frouin, L., 1995, Microstructural analysis of RPC (reactive powder concrete), Cement and Concrete Research, Vol.25, No.7, pp.1491-1500.
3- Talebinejad, I., Bassam, S. A., Iranmanesh, A., and Shekarchizadeh, M., 2004, Optimizing mix proportions of normal weight reactive powder concrete with strengths of 200–350 MPa. In Ultra high performance concrete (UHPC), international symposium on ultra-high performance concrete, pp. 133-141.
 4-Brühwiler, E., and Denarié, E., 2013, Rehabilitation and strengthening of concrete structures using ultra-high performance fibre reinforced concrete, Structural Engineering International, Vol.23, No.4, pp.450-457.
5-Noshiravani, T., and Brühwiler, E., 2013, Experimental investigation on reinforced ultra-high-performance fiber-reinforced concrete composite beams subjected to combined bending and shear, ACI Structural Journal, Vol.110, No.2, pp.251.
6- Habel, K., Denarié, E., and Brühwiler, E., 2006, Structural response of elements combining ultrahigh-performance fiber-reinforced concretes and reinforced concrete, Journal of Structural Engineering, Vol.132, No.11, pp.1793-1800.
7- Carbonell Muñoz, M. A., Harris, D. K., Ahlborn, T. M., and Froster, D. C., 2013, Bond performance between ultrahigh-performance concrete and normal-strength concrete, Journal of Materials in Civil Engineering, Vol.26, No.8, pp.04014031.
8- Julio, E. N., Branco, F. A., and Silva, V. D., 2004, Concrete-to-concrete bond strength. Influence of the roughness of the substrate surface, Construction and Building Materials, Vol.18, No.9, pp.675-681.
9- Silfwerbrand, J., 2003, Shear bond strength in repaired concrete structures, Materials and Structures, Vol.36, No.6, pp.419-424.
10-Noori, A., Shekarchi, M., Moradian, M., and Moosavi, M., 2015, Behavior of Steel Fiber-Reinforced Cementitious Mortar and High-Performance Concrete in Triaxial Loading, ACI Materials Journal, pp.112.
11- Babanajad, S. K., Farnam, Y., and Shekarchi, M., 2012, Failure criteria and triaxial behaviour of HPFRC containing high reactivity metakaolin and silica fume, Construction and Building Materials, Vol.29, pp.215-229.
12- ASTM C1583, 2004, Standard Test Method for Tensile Strength of Concrete Surfaces and the Bond Strength or Tensile Strength of Concrete Repair and Overlay Materials by Direct Tension (Pull-off Method), ASTM International, West Conshohocken, PA.
13- ASTM C882/882M-05e1., 2005, Standard Test Method for Bond Strength of Epoxy-Resin Systems Used With Concrete by Slant Shear, ASTM International, West Conshohocken, PA.
14-American Concrete Institute (ACI), 2006, Guide for the selection of materials for the repair of concrete, ACI 546.3R-06, Farmington Hills, MI.
New Approaches in Civil Engineering
Volume 3, Issue 3
February 2020
Pages 19-29

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