Performance Assessment of Basalt FRCM for the Confinement of Clay Brick Masonry Cylinders

Abstract

Fibre Reinforced Cementitious Matrix (FRCM) composites have been proved to be a suitable strengthening material for masonry structures in the last years. Moreover, basalt fibres are increasingly used as reinforcement of composites as a more sustainable alternative to glass fibres. The goal of this work is to investigate the effectiveness of basalt FRCM to confine masonry circular columns. A total of eighteen clay brick masonry cylinders were tested in compression. The specimens were cored from two different masonry assemblies and wrapped with one or two layers of BFRCM composite. The stress-strain curves and the gains of strength and strain capacity of confined cylinders compared to the control specimens are reported together with a description of the failure modes.

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References

[1] Micelli, F., Di Ludovico, M., Angiuli, R., Aiello, M. A. Experimental tests on full scale FRP/FRCM confined masonry columns subjected to axial load. Mater Struct (2014) 47(12):2081-2100.

[2] Incerti, A., Vasiliu, A., Ferracuti, B., Mazzotti, C. Uni-Axial compressive tests on masonry columns confined by FRP and FRCM. In Proceedings of the 12th international symposium on fibre reinforced polymers for reinforced concrete structures and the 5th Asia-Pacific conference on fibre reinforced polymers in structures, joint conference, Nanjing, (2015), pp. 14-16.

[3] Alotaibi, K. S. and Galal, K. Axial compressive behaviour of grouted concrete block masonry columns confined by CFRP jackets. Compos Part B - Eng (2017) 114:467-479.

[4] Minafò, G. and La Mendola, L. Experimental investigation on the effect of mortar grade on the compressive behaviour of FRCM confined masonry columns. Compos Part B – Eng (2018) 146:1-12.

[5] Cascardi, A., Micelli, F., Aiello, M. A. FRCM-confined masonry columns: experimental investigation on the effect of the inorganic matrix properties. Constr Build Mater (2018) 186:811-825.

[6] Santandrea, M., Quartarone, G., Carloni, C., Gu, X. L. Confinement of masonry columns with steel and basalt FRCM composites. In Key Engineering Materials, Trans Tech Publications 747 (2017), pp. 342-349.

[7] Maddaloni, G., Cascardi, A., Balsamo, A., Di Ludovico, M., Micelli, F., Aiello, M. A., Prota, A. Confinement of full-scale masonry columns with FRCM systems. In Key Engineering Materials, Trans Tech Publications 747 (2017), pp. 374-381.

[8] Ombres, L. and Verre, S. Masonry columns strengthened with Steel Fabric Reinforced Cementitious Matrix (S-FRCM) jackets: experimental and numerical analysis. Measurement (2018) 127:238-245.

[9] Guo, Y. C., Gao, W. Y., Zeng, J. J., Duan, Z. J., Ni, X. Y., & Peng, K. D. Compressive behavior of FRP ring-confined concrete in circular columns: Effects of specimen size and a new design-oriented stress-strain model. Constr Build Mater (2019) 201:350-368.

[10] EN 772-1. Method of test for masonry units – Part 1: Determination of compressive strength (2011).

[11] EN 1015-11. Methods of test for mortar for masonry – Part 11: Determination of flexural and compressive strength of hardened mortar (1999).

[12] ISO 13934-1. Textiles – Tensile properties of fabrics – Part 1: Determination of maximum force and elongation at maximum force using the strip method. CEN – European Committee for Standardization (April 2013).

[13] D'Anna, J., Amato, G., Chen, J. F., Minafò, G., & La Mendola, L. On the use of Digital Image Correlation (DIC) for evaluating the tensile behaviour of BFRCM strips. In Key Engineering Materials, Trans Tech Publications Ltd 817 (2019), pp. 377-384.

[14] D'Anna, J. Experimental investigation on the effectiveness of basalt-fibre strengthening systems for confining masonry elements (2019).

[15] ICC. AC434. Proposed Acceptance Criteria for Masonry and Concrete Strengthening Using Fibre-reinforced Cementitious Matrix (FRCM) Composite Systems. Whittier, CA: ICC-Evaluation Service (2013).