Experimental study on performance of repaired and strengthened unreinforced masonry walls using polypropylene bands

Document Type : Article

Authors

Department of Civil Engineering, K. N. Toosi University of Technology, Tehran, P.O. Box 15875-4416, Iran

Abstract

This paper is aimed at proposing a strengthening method for improving the seismic performance of unreinforced masonry (URM) brick walls. What is noteworthy regarding the proposed technique is the low price and easy application of polypropylene (PP) bands, which are widely used in the packaging industry. Three half-scale specimens were tested under cyclic lateral loading simultaneously with imposing a constant vertical load. First, the URM wall was tested up to a certain drift in which a reduction in lateral capacity was recorded. According to the crack pattern observed on the wall surface, a repair strategy was taken to upgrade the damaged wall in the shortest possible time and with the minimum manpower. In doing so, the horizontal PP bands were employed to wrap the wall. The repair technique has stopped the spread of the cracks and prevented the reduction in lateral capacity. Besides, the third specimen, which is identical to the URM wall but it is strengthened by PP bands, was tested and developed a superior performance in terms of changing the failure mode and also increasing the maximum strength, the strength at maximum displacement and maximum displacement by 88%, 38% and 185%, respectively, compared to URM wall.

Keywords

References

References:
1. Ghiassi, B., Soltani, M., and Tasnimi, A.A. "Seismic evaluation of masonry structures strengthened with reinforced concrete layers", Journal of Structural Engineering, 138(6), pp. 729-743 (2012).
2. Kadam, S.B., Singh, Y., and Li, B. "Strengthening of unreinforced masonry using welded wire mesh and micro-concrete-Behaviour under in-plane action", Construction and Building Materials, 54, pp. 247-257 (2014).
3. Shermi, C. and Dubey, R.N. "Study on out-of-plane behaviour of unreinforced masonry strengthened with welded wire mesh and mortar", Construction and Building Materials, 143, pp. 104-120 (2017).
4. Wang, C., Sarhosis, V., and Nikitas, N. "Strengthening/ retrofitting techniques on unreinforced masonry structure/element subjected to seismic loads: A literature review", The Open Construction and Building Technology Journal, 12(1), pp. 251-268 (2018).
5. Reboul, N., Mesticou, Z., Larbi, A.S., et al. "Experimental study of the in-plane cyclic behaviour of masonry walls strengthened by composite materials", Construction and Building Materials, 164, pp. 70-83 (2018).
6. Ismail, N., El-Maaddawy, T., and Khattak, N. "Quasistatic in-plane testing of FRCM strengthened nonductile reinforced concrete frames with masonry in-fills", Construction and Building Materials, 186, pp. 1286-1298 (2018).
7. Niasar, A.N., Alaee, F.J. and Zamani, S.M. "Experimental investigation on the performance of unreinforced masonry wall, retrofitted using engineered cementitious composites", Construction and Building Materials, 239, 17788 (2020).
8. Wang, F., Kyriakides, N., Chrysostomou, C., et al.  Experimental research on bond behaviour of fabric reinforced cementitious matrix composites for retrofitting masonry walls", International Journal of Concrete Structures and Materials, 15(1), pp. 1-17 (2021).
9. Carozzi, F.G., Milani, G., and Poggi, C. "Mechanical properties and numerical modeling of Fabric Reinforced Cementitious Matrix (FRCM) systems for strengthening of masonry structures", Composite Structures, 107, pp. 711-725 (2014).
10. Gattesco, N. and Boem, I. "Characterization tests of GFRM coating as a strengthening technique for masonry buildings", Composite Structures, 165, pp. 209-222 (2017).
11. Kassem, N., Atta, A., and Etman, E. "Structural behavior of strengthening masonry in-filled frames subjected to lateral load using bonded and un-bonded CFRP", KSCE Journal of Civil Engineering, 21(3), pp. 818-828 (2017).
12. Yacila, J., Salsavilca, J., Tarque, N., et al. "Experimental assessment of confined masonry walls retrofitted with SRG under lateral cyclic loads", Engineering Structures, 199, 109555 (2019).
13. Nayak, S., Banerjee, S., and Das, S. "Augmenting out-of-plane behaviour of masonry wallet using PPband and steel wire mesh", IOP Conference Series: Materials Science and Engineering (2018).
14. Heydariha, J.Z., Ghaednia, H., Nayak, S., et al. "Experimental and field performance of PP bandretro fitted masonry: evaluation of seismic behavior", Journal of Performance of Constructed Facilities, 33(1), 04018086 (2019).
15. Banerjee, S., Nayak, S., and Das, S. "Improving the in-plane behavior of brick masonry wallet using PP Band and steel wire mesh", Journal of Materials in Civil Engineering, 32(6), 04020132 (2020).
16. Meguro, K., Mayorca, P., Sathiparan, N., et al. "PPBand retrofitting technique: Affordable, acceptable and feasible method for developing countries", Institute of Industrial Science, University of Tokyo (2005).
17. Nissanka, N.A.A.C., Priyankara, R.L.S., and Sathiparan, N. "Comparison of mesh type seismic retrofitting for masonry structures", 3rd International Symposium on Advances in Civil and Environmental Engineering Practices for Sustainable Development, Galle, Sri Lanka, pp. 334-341 (2015).
18. Macabuag, J., Guragain, R., and Bhattacharya, S. "Seismic retrofitting of non-engineered masonry in rural Nepal", Proceedings of the Institution of Civil Engineers-Structures and Buildings, 165(6), pp. 273- 286 (2012).
19. Mansouri, A., Marefat, M.S., and Khanmohammadi, M. "Experimental evaluation of seismic performance of low-shear strength masonry infills with openings in reinforced concrete frames with deficient seismic details", The Structural Design of Tall and Special Buildings, 23(15), pp. 1190-1210 (2014).
20. ASTM C109/C109M-16a, Standard Test Method for Compressive Strength of Hydraulic Cement Mortars (Using 2-in. or [50-mm] Cube Specimens), ASTM 2016 International, West Conshohocken, PA 10.1520/C0109-C0109M-16A.
21. ASTM C109/C109M-16a, Standard Test Method for Compressive Strength of Hydraulic Cement Mortar (Using 2-in. or [50-mm] Cube Specimens), ASTM 2016 International West Coshohocken, PA 10.1520/C0109- C0109M-16A.
22. FEMA 306, Evaluation of Earthquake-Damaged Concrete and Masonry Wall Buildings-Basic Procedures Manual, prepared by the Applied Technology Council (ATC-43 Project), for the Federal Emergency Management Agency, Washington, D.C. (1998).
23. ASTM C67-1995, Standard Test methods for Sampling and Testing Brick and Structural Clay. 
24. ASTM D2216-19, Standard Test Methods of Laboratory Determination of Water (Moisture) Content of Soil and Rock by Mass, ASTM International, West Conshohocken, PA, 2019, DOI:10.1520/D2216-19.
25. ASTM C1314-18, Standard Test Method for Compressive Strength of Masonry Prisms, ASTM International, West 2018 Conshohocken; PA 10,1520/C1314-18.
26. ASTM D3039/D3039M-17, Standard Test Method for Tensile Properties of Polymer Matrix Composite Materials, ASTM 2017 International, West Conshohocken, PA 10.1520/D3039-D3039M-17.
27. ACI Innovation Task Group 1 and Collaborators. Acceptance Criteria for Moment Frames Based on Structural Testing. ACI T1.1-01. American Concrete Institute: Farmington Hills, MI (2001).
28. FEMA306, Evaluation of earthquake damaged concrete and masonry wall buildings (basic procedure manual), Federal Emergency Management Agency, Washington, DC. (1998).
29. Tomazevic, M. "Earthquake-resistant design of masonry buildings", (1). World Scientific Publishing, Singapore (1999).
30. Park, R. "Evaluation of ductility of structures and structural assemblages from laboratory testing", Bulletin of the New Zealand Society for Earthquake Engineering, 22(3), pp. 155-166 (1989).
31. Magenes, G. and Calvi, G.M. "In-plane seismic response of brick masonry walls", Earthquake Engineering and Structural Dynamics, 26(11), pp. 1091-1112 (1997).
32. Darbhanzi, A., Marefat, M.S., and Khanmohammadi, M. "Investigation of in-plane seismic retrofit of unreinforced masonry walls by means of vertical steel ties", Construction and Building Materials, 52, pp. 122-129 (2014).
Scientia Iranica
Volume 30, Issue 3
Transactions on Civil Engineering (A)
May and June 2023
Pages 918-935

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