Materiales de Construcción, Vol 66, No 324 (2016)

Compressive strength behaviour of low- and medium-strength concrete specimens confined with carbon fibres in defective implementation conditions: an experimental study


https://doi.org/10.3989/mc.2016.08315

M. Fernández-Cánovas
Escuela Técnica Superior de Edificación de Madrid, Technical University of Madrid, Spain

M. N. González-García
Escuela Técnica Superior de Edificación de Madrid, Technical University of Madrid, Spain

J. Á. Piñero
Escuela Técnica Superior de Edificación de Madrid, Technical University of Madrid, Spain

A. Cobo
Escuela Técnica Superior de Edificación de Madrid, Technical University of Madrid, Spain

Abstract


This behaviour of low- and medium-strength concrete specimens confined with carbon fibre-reinforced polymer (CFRP) was analysed in three loading cycles. In some cases, stress levels were achieved that produced intemal microcracks, which allowed residual rigidity and the behaviour of completely microcraked concrete specimens to be studied. The specimens were subsequently tested to compression to the fracture point. Specimens reinforced in accordance with no manufacturing defects (100% CFRP reinforcement) and major manufacturing defects (50% CFRP reinforcement) were assessed for effectiveness and behaviour of the confined elements in less than ideal conditions. Results show that confinement was higher in low-resistance concretes, that the behaviour of reinforced specimens was unaffected by defective implementation conditions and that the reinforced specimens were less rigid than the non-reinforced specimens when tested up to 40% of ultimate fracture strength.

Keywords


Concrete; Composite; Compressive strength; Strain; Modulus of elasticity

Full Text:


HTML PDF XML

References


Maaddaway, T. (2009) Strengthening of eccentrically loaded reinforced concrete columns with fiber-reinforced polymer wrapping system: experimental investigation and analytical modelling. J. Compos. Constr. 13 [1], 13-24. https://doi.org/10.1061/(ASCE)1090-0268(2009)13:1(13)

Machida, A. (Ed) (1993) State of the art report on continuous fiber reinforcing materials. Second Research Committee on CFRM, Japan Society of Civil Engineers: Concrete Engineering Series 3. Tokyo.

American Concrete Institute (2008) ACI 440.2R-08. Guide for the design and construction of externally bonded FRP systems for strengthening concrete structures. Detroit, Mich.: American Concrete Institute.

Neale, K.W.; Labousièrre, P. (1992) Advanced composites materials in bridges and structures. Proc. 1st Int. Conf. On Advanced Composites Materials in Bridges and Structures, CSCE, Sherbrocke, Quebec, Canada.

Nanni, A.; Di Tomaso, A.; Arduini, M. (1996) International research on advanced composites in construction, National Science Foundation, Arlington, Va, Final report No. IRACC-96.

Saadatmanesh, H.; Ehsani, M.R.; Li, M.W. (1994) Strength and ductility of concrete columns externally reinforced with fiber composite straps. ACI Structural J. 91 [4], 434-447.

Elsanadedy, H.M.; Al-Salloum, Y.A.; Abbas, H.; Alsayed, S.H. (2012) Prediction of strength parameters of FRPconfined concrete. Comp. Part B: Eng.. 43 [2], 228-239. https://doi.org/10.1016/j.compositesb.2011.08.043

International Federation for Structural Concrete (CEBFIB), (2001) Externally bonded FRP reinforcement for RC structures. fib Bulletin 14, Laussanne, Switzerland.

Japan Society of Civil Engineers. (2001) Recommendations for upgrading of concrete structures with use of continuos fiber sheets. In: Maruyama K. (Ed). Concrete Engineering Series 41: March 2001.

CNR-DT 200/2004 (2004) Guide for the design and construction of externally bonded FRP systems for strengthening existing structures, Advisory Committee on Technical Recommendations for Construction, National Research Council, Rome, Italy.

Toutanji, H. (1999) Stress-strain characteristics of concrete columns externally confined with advanced fiber composites sheets. ACI Mat. Journal. 96 [3], 397-404.

Nanni, A.; Norris, M.S.; Bradford, N.M. (1993) Lateral confinement of concrete using FRP reinforcement, In Proc., International Symposium on FRP Reinforcement, Vancouver, Canada, ACI SP-138 American Concrete Institute, March 30-31 1993, 193-209.

Larralde, J. (1997) Compressive strength of small concrete specimens confined with fibreglass laminates. Cem. Concr. Aggreg 19 [1], 17-21. https://doi.org/10.1520/CCA10016J

Saafi, M.; Toutanji, H.; Li, Z. (1999) Behaviour of concrete columns confined with fiber reinforced polymer tubes. ACI Mat. Journal. 96 [4], 500-509.

Csuka, B.; Kollár, L.P. (2010) FRP confined circular concrete columns subjected to concentric loading. Reinf. Plast. Compos. 29 [23], 3504-3520. https://doi.org/10.1177/0731684410381448

Aire, C.; Gettu, R.; Casas, J.R.; Marques, S.; Marques, D. (2010) Concrete laterally confined with fibre-reinforced polymers (FRP): Experimental study and theoretical model. Mater. Construcc. 60 [297], 19-31. https://doi.org/10.3989/mc.2010.45608

de Diego, A., Arteaga, A., Fernández, J., Perera, R., & Cisneros, D. (2015) Behaviour of FRP confined concrete in square columns. Mater. Construcc, 65(320): e069. https://doi.org/10.3989/mc.2015.05414

Csuka, B.; Kollár, L.P. (2012) Analysis of FRP confined circular columns under eccentric loading. Compos. Struct. 94 [3], 1106-1116. https://doi.org/10.1016/j.compstruct.2011.10.012

Daugevi_ius, M.; Valivonis, J.; Beinaravi_ius, A.; Skuturna, T.; Budvytis, M. (2013) Experimental investigation of the load carrying capacity of eccentrically loaded reinforced concrete elements strengthened with CFRP. Proc. Eng. 57, 232-237.

Harmon, T.G.; Ramakrishran, S.; Wang, E.H. (1998) Confined concrete subjected to uniaxial monotonic loading. J. Eng. Mechan. 124 [12], 1303-1309. https://doi.org/10.1061/(ASCE)0733-9399(1998)124:12(1303)

Li, Q.; Ansari, F. (2000) High-strength concrete in triaxial compression by different size of specimens. ACI Materials Journal. 97 [6], 684-689.

Setunge, S.; Attard, M.M.; Darvall, P.L. (1993) Ultimate strength of confined very high-strength concretes. ACI Structural Journal. 90 [6], 632-641.

Xie, J.; Elwi, A.E.; MacGregor, J.G. (1995) Mechanical properties of three high-strength concretes containing silica fume. ACI Mat. Journal. 92 [2], 135-145.

Aire, C. (2002) Estudio experimental del comportamiento del hormigón confinado sometido a compresión. PhD Thesis. Universitat Politècnica de Catalunya, Spain.

Almusallam, T.H. (2007) Behaviour of normal and highstrength concrete cylinders confined with E-glass/epoxi composite laminates. Comp. Part B: Eng. 38 [5-6], 629-639. https://doi.org/10.1016/j.compositesb.2006.06.021

Micelli, F.; Modarelli, R. (2013) Experimental and analytical study on properties affecting the behaviour of FRPconfined concrete. Comp. Part B: Eng. 45 [1], 1420-1431. https://doi.org/10.1016/j.compositesb.2012.09.055

Vincent, T.; Ozbakkaloglu, T. (2013) Influence of concrete strength and confinement method on axial compressive behavior of FRP confined high and ultra high-strength concrete. Comp. Part B: Eng. 50, 413-428. https://doi.org/10.1016/j.compositesb.2013.02.017

Lam, L.; Teng, J.G. (2009) Stress-strain model for FRPconfined concrete under cyclic axial compression. Eng. Struct. 31, 308-321. https://doi.org/10.1016/j.engstruct.2008.08.014

Abbsania, R.; Ziaadiny, H. (2010) Behavior of concrete prisms confined with FRP composites under axial cyclic compression. Eng. Struct. 32(3), 648-655. https://doi.org/10.1016/j.engstruct.2009.11.011

Abbsania, R.; Hosseinpour, F.; Rostamian, M.; Ziaadiny, H. (2013) Cyclic and monotonic behavior of FRP confined concrete rectangular prisms with different aspect radios. Construc. Build. Mat. 40, 118-125. https://doi.org/10.1016/j.conbuildmat.2012.10.008

Faustino, P.; Frade, P.; Chastre, C. (2016) Lateral cyclic behaviour of RC columns confined with carbon fibres. Structures 5, 196-206. https://doi.org/10.1016/j.istruc.2015.11.004

Bouchelaghem, H.; Bezazi, A.; Scarpa, F. (2011) Compressive behaviour of concrete cylindrical FRPconfined columns subjected to a new sequential loading technique. Comp. Part B:42(7), 1987-1993. https://doi.org/10.1016/j.compositesb.2011.05.045

Li, P.; Wu, Y.-F. (2015) Stress-strain model of FRP confined concrete under cyclic loading. Composite Structures 134, 60-71. https://doi.org/10.1016/j.compstruct.2015.08.056

Mehta, P.K.; Monteiro, P.J.M. (2006) Concrete, Microstructure, Properties and Materials. Third Edition. The McGraw-Hill Companies Inc. New York, (2006).

EN 12390-2:2009. Testing hardened concrete - Part 2: Making and curing specimens for strength tests.

Lam, L.; Teng, J. (2003) Design-oriented stress-strain model for FRP-confined concrete. Construc. Build. Mat. 17 [6-7], 471-489. https://doi.org/10.1016/S0950-0618(03)00045-X

Lam, L.; Teng. J. (2003) Design-oriented stress-strain model for FRP-confined concrete in rectangular columns. J. Reinf. Plastics & Comp. 22 [13], 1149-1186. https://doi.org/10.1177/0731684403035429

Pessiki, S.; Harries, K.A.; Kestner, J.; Sause, R.; Ricles, J.M. (2001) The axial behaviour of concrete confined with fiber reinforced composite jackets. J. Compos. Constr. 5 [4], 237-245. https://doi.org/10.1061/(ASCE)1090-0268(2001)5:4(237)

Harries, K.A.; Carey, S.A. (2003) Shape and "gap" effects on the behaviour of variably confined concrete. Cem. Concr. Res. 33 [6], 881-890. https://doi.org/10.1016/S0008-8846(02)01085-2

Carey, S.A.; Harries, K.A. (2005) Axial behaviour and modeling of confined small-, medium-, and large-scale circular sections with CFRP jackets. ACI Structural Journal. American Concrete Institute. 102 [4], 596-604.

EN 12390-3:2009. Testing hardened concrete - Part 3: Compressive strength of test specimens.




Copyright (c) 2016 Consejo Superior de Investigaciones Científicas (CSIC)

Creative Commons License
This work is licensed under a Creative Commons Attribution 4.0 International License.


Contact us materconstrucc@ietcc.csic.es

Technical support soporte.tecnico.revistas@csic.es