Assessing the compressive strength and permeability of protective coating layers applied to CFRP sheets, under harsh environmental conditions

Document Type : Research Article

Authors

1 Department of civil engineering, Faculty of engineering, International Imam Khomeini university, Qazvin, Iran

2 Department of Civil Engineering, Engineering Faculty, International Imam Khomeini University, Qazvin, Iran

Abstract

In this paper, the results of the effect of exposure of CFRP strengthened and coated 150mm concrete cubes to harsh environments are presented. The harsh environment included: wet-dry, freeze-thaw and different temperature change cycles. It is anticipated that the intended environmental conditions harm the performance of the CFRP sheet by reducing the compressive strength of concrete and, at the same time, increase its permeability. The test specimens used in this investigation included 150mm CFRP strengthened concrete cubes with and without protective coating layers. The methods employed were "Cylindrical Chamber" permeability, mortar capillary water absorption and mortar compressive strength tests. The results obtained tend to indicate that the proper selection of protective coating has a significant impact on the performance of the CFRP-coated concrete cubes that were under harsh environmental conditions. Application of suitable coatings onto the CFRP layer caused respective reductions of about 28%, 34%, and 36%, on the permeability of specimens after being exposed to specified wet-dry, freeze-thaw and temperature change cycles.

Keywords

Main Subjects

References

[1] B.N. Sharp, REINFORCED AND PRESTRESSED CONCRETE IN MARITIME STRUCTURES, Proceedings of the Institution of Civil Engineers-Structures and Buildings, 116(3) (1996) 449-469 %@ 1751-7702.
[2] F.S. Rostásy, FRP Tensile Elements For Prestressed Concrete--State of the art, Potentials and limits, Special Publication, 138 (1993) 347-366.
[3] F. Micelli, J.J. Myers, S. Murthy, Performance of FRP confined concrete subjected to accelerated environmental conditioning, in, 2002, pp. 87-98.
[4] X. Li, Q. Xu, S. Chen, An experimental and numerical study on water permeability of concrete, Construction and building materials, 105 (2016) 503-510 %@ 0950-0618.
[5] A.C.I. Ct, 13.(2013).“, ACI Concrete Terminology, ACI STANDARD, First Printing January,  (2013).
[6] M. Dashtibadfarid, M. Afrasiabi, Low-Permeability Concrete: Water-to-Cement Ratio Optimization for Designing Drinking Water Reservoirs, Int. J. Innov. Eng. Sci, 2 (2017) 20-24.
[7] S. Ahmad, A.K. Azad, K.F. Loughlin, Effect of the key mixture parameters on tortuosity and permeability of concrete, Journal of Advanced Concrete Technology, 10(3) (2012) 86-94 %@ 1347-3913.
[8] T.C. Fu, W. Yeih, J.J. Chang, R. Huang, The influence of aggregate size and binder material on the properties of pervious concrete, Advances in Materials Science and Engineering, 2014 %@ 1687-8434 (2014).
[9] Z. Yu, C. Ni, M. Tang, X. Shen, Relationship between water permeability and pore structure of Portland cement paste blended with fly ash, Construction and building materials, 175 (2018) 458-466 %@ 0950-0618.
[10] K. Samimi, S. Kamali-Bernard, A.A. Maghsoudi, M. Maghsoudi, H. Siad, Influence of pumice and zeolite on compressive strength, transport properties and resistance to chloride penetration of high strength self-compacting concretes, Construction and Building Materials, 151 (2017) 292-311 %@ 0950-0618.
[11] A. Belarbi, S.-W. Bae, An experimental study on the effect of environmental exposures and corrosion on RC columns with FRP composite jackets, Composites Part B: Engineering, 38(5-6) (2007) 674-684 %@ 1359-8368.
[12] A. Gharachorlou, A. Akbar Ramezanianpour, Resistance of concrete specimens strengthened with FRP sheets to the penetration of chloride ions, Arabian Journal for Science and Engineering, 35(1) (2010) 141 %@ 1319-8025.
[13] P. Böer, L. Holliday, T.H.K. Kang, Independent environmental effects on durability of fiber-reinforced polymer wraps in civil applications: a review, Construction and Building Materials, 48 (2013) 360-370 %@ 0950-0618.
[14] R. Gopalan, B.R. Somashekar, B. Dattaguru, Environmental effects on fibre—Polymer composites, Polymer degradation and stability, 24(4) (1989) 361-371 %@ 0141-3910.
[15] L.C. Bank, T.R. Gentry, A. Barkatt, Accelerated test methods to determine the long-term behavior of FRP composite structures: environmental effects, Journal of Reinforced Plastics and Composites, 14(6) (1995) 559-587 %@ 0731-6844.
[16] M.A.G. Silva, B.S. da Fonseca, H. Biscaia, On estimates of durability of FRP based on accelerated tests, Composite Structures, 116 (2014) 377-387 %@ 0263-8223.
[17] R. Cusson, Y. Xi, The behavior of fiber-reinforced polymer reinforcement in low temperature environmental climates, in, University of Colorado, 2002.
[18] N. Banthia, A. Biparva, S. Mindess, Permeability of concrete under stress, Cement and Concrete Research, 35(9) (2005) 1651-1655 %@ 0008-8846.
[19] M. Naderi, Registration of Patent in Companies and industrial property Office,“Determination of concrete, stone, mortar, brick and other construction materials permeability with cylindrical chamber method.”, in, Reg, 2010.
[20] M. Naderi, A. Kaboudan, Cylindrical Chamber: A New In Situ Method for Measuring Permeability of Concrete with and without Admixtures, Journal of Testing and Evaluation, 48(3 %@ 0090-3973) (2020).
[21] B.S. En, 480-11. Admixtures for concrete, mortar and grout-test methods-part 11: determination of air void characteristics in hardened concrete, London: British Standards Institution,  (2005).
[22] F.H. Wittmann, A.D.A. Wittmann, P.G. Wang, Capillary absorption of integral water repellent and surface impregnated concrete, Restoration of Buildings and Monuments, 20(4) (2014) 281-290 %@ 1864-7022.
[23] C. Hall, T.K.-M. Tse, Water movement in porous building materials—VII. The sorptivity of mortars, Building and Environment, 21(2) (1986) 113-118 %@ 0360-1323.
[24] A. Astm, Standard test method for compressive strength of hydraulic cement mortars (using 2-in. or [50-mm] cube specimens), Annual Book of ASTM StandardsAnnual Book of ASTM Standards, 4(1) (2013) 1-9.
[25] C. Astm, 33, 2008 “Standard Specification for Concrete Aggregates”, West Conshohocken, USA,  (2008).
[26] P. Pliya, A.L. Beaucour, A. Noumowé, Contribution of cocktail of polypropylene and steel fibres in improving the behaviour of high strength concrete subjected to high temperature, Construction and Building Materials, 25(4) (2011) 1926-1934 %@ 0950-0618.
[27] P. Zhang, D. Li, Y. Qiao, S. Zhang, C. Sun, T. Zhao, Effect of air entrainment on the mechanical properties, chloride migration, and microstructure of ordinary concrete and fly ash concrete, Journal of Materials in Civil Engineering, 30(10) (2018) 04018265 %@ 04010899-04011561.
[28] M. Pigeon, R. Pleau, M. Azzabi, N. Banthia, Durability of microfiber-reinforced mortars, Cement and Concrete Research, 26(4) (1996) 601-609 %@ 0008-8846.
[29] D. Niu, L. Jiang, M. Bai, Y. Miao, Study of the performance of steel fiber reinforced concrete to water and salt freezing condition, Materials & Design, 44 (2013) 267-273 %@ 0261-3069.
Amirkabir Journal of Civil Engineering
Volume 53, Issue 10
January 2022
Pages 4379-4396

Files

Share

How to cite

Statistics