PSI - Issue 5

Rachel Martini et al. / Procedia Structural Integrity 5 (2017) 1108–1115 Martini et al/ Structural Integrity Procedia 00 (2017) 000 – 000

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4. Conclusions

PP2 For the sonic testing, the results are in agreement with the literature, for example: Anzani et al., (2006); Mazzon et al., (2013); Mendes Guimarães, (2009); Silva et al., (2013). The velocities obtained from 1000 to 1500 m/s corresponds to a low quality masonry, according to Berra et al. (1992 apud Silva et al., 2013) and Forde et al. (1985 apud Silva et al., 2013). In the GPR results, the radargrams will be processed in more detail to obtain numerical information (velocities of the waves, dielectric constant of the material and attenuation parameters), but it has been confirmed that their use is a suitable methodology for future work. The non-destructive tests used present a qualitative correlation between their results obtained until now. This synergy of methods points to an improved methodology for the characterization of historical buildings. The correlation between mechanical parameters and NDT results will be later obtained using ANN (artificial neural network), along this on course investigation work. The interest of this work was to apply the non-destructive techniques (GPR and sonic test) as methodology of characterization of historical buildings. For this purpose, different wall typologies were used to understand the behavior of the test responses in face of these differences. The authors would like to thank CAPES (Coordenação de Aperfeiçoamento de Pessoal de Nível Superior - Brasil) and CEFET-MG (Centro Federal de Educação Tecnológica de Minas Gerais - Brasil) for financial support. References Anzani, A. et al., 2006. Use of Sonic and GPR Tests to Control the Effectiveness of Grout Injections of Stone Masonry. ECNDT , 3, pp.1 – 7. BSI. Natural Stone Test Methods – Determination of Sound Speed Propagation. British Standard: London, 2004. Davis J.L. e Annan A.P., 1989. Ground Penetrating Radar for High Resolution Mapping of oil and rock stratigraphy. Geophysical Prospecting, v. 37 , Figueiredo, A. et al., 2013. Seismic retrofitting solution of an adobe masonry wall. Materials and Structures , 46, pp.203 – 219. Luis Miranda, Lorenzo Cantini, João Guedes, A.C., 2016. Assessment of mechanical properties of full-scale masonry panels through sonic methods. Comparison with mechanical destructive tests. Structural Control and Health Monitoring , (23), pp.503 – 516. Mazzon, N. et al., 2013. Dynamic modal identification of strengthened three-leaf stone masonry walls subjected to out-of-plane shaking table tests. XV Convegno Nazionale “L’Ingegneria Sismica in Italia” - ANIDIS , (September). Mendes Guimarães, M.I., 2009. Caracterização de paredes de alvenaria de pedra por técnica sònica . Miranda, L.F.B., 2011. Ensaios acústicos e de macacos planos em alvenarias resistentes . Universidade do Porto. Available at: https://sigarra.up.pt/feup/teses_posgrad.tese?P_ALU_NUMERO=060532001&P_LANG=0. Silva, B. et al., 2013. Compression and Sonic Tests to Assess Effectiveness of Grout Injection on Three-Leaf Stone Masonry Walls. International Journal of Architectural Heritage , 8(3), pp.408 – 435. Available at: http://www.tandfonline.com/doi/abs/10.1080/15583058.2013.826300 [Accessed February 4, 2015]. Tareco, H. et al., 2009. A high resolution GPR experiment to characterize the internal structure of a damaged adobe wall. Near Surface Geoscience , 27(August), pp.79 – 84. PP4 Acknowledgements