Abstract
In the repair of historical masonry walls, the plaster de-bonding frequently happens because of the long-term mechanical incompatibility of new mortar. A new laboratory methodology is described for evaluate the mechanical adhesion of the repair mortar applied in the restoration work at the Sacro Monte di Varallo (UNESCO heritage site). The acoustic emission (AE) technique has allowed to predict the fracture mode and to evaluate the repair mortar applied to historical masonry stone. This non-destructive methodology was able to identify defects and damages in masonry structures. Through shear tests, the specific geometry of assembled specimen can verify the detachment process of repair mortar. The AE technique permits to estimate the amount of energy released in de-bonding surface between repair mortar and stone during damage process. The authors have elaborated a numerical simulation to follow the experimental data. The evolution of de-bonding process of a plaster in a stone brick – mortar system was assess by means of the Acoustic Emission technique, which can follow the numerical model. Therefore, the experimental procedure was able to characterize the mechanical behavior of detachment mortar, useful for selection of repair plaster applied to historical masonry stone.
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Grazzini A, Lacidogna G, Valente S et al (2018) Delamination of plasters applied to historical masonry walls: analysis by acoustic emission technique and numerical model. IOP Conf Series Mater Sci Eng 372:1–8. https://doi.org/10.1088/1757-899X/372/1/012022
Bocca P, Valente S, Grazzini A et al (2014) Experimental and numerical analysis of delamination repair plaster applied to historical masonry building. J. Civil Eng Architect 8(47):55. https://doi.org/10.17265/1934-7359/2014.01.006
Bocca P, Valente S, Grazzini A et al (2014) Detachment analysis of dehumidified repair mortars applied to historical masonry walls. Int J Architect Heritage 8:336–348. https://doi.org/10.1080/15583058.2013.826304
Bocca P, Grazzini A (2013) Mechanical properties and freeze-thawing durability of strengthening mortars. J Mater Civ Eng 25:274–280
Carpinteri A, Grazzini A, Lacidogna G et al (2014) Durability evaluation of reinforced masonry by fatigue tests and acoustic emission technique. Struct Control Health Monit 21:950–961. https://doi.org/10.1002/stc.1623
Carpinteri A, Lacidogna G, Accornero F et al (2013) Influence of damage in the acoustic emission parameters. Cement Concr Compos 44:9–16
Carpinteri A, Accornero F (2017) Multiple snap-back instabilities in progressive microcracking coalescence. Eng Fract Mech. https://doi.org/10.1016/j.engfracmech.2017.11.034
Barpi F, Valente S (2010) The cohesive frictional crack model applied to the analysis of the dam-foundation joint. Eng Fract Mech 77:2182–2191
Barpi F, Valente S (2002) Fuzzy parameters analysis of time-dependent fracture of concrete dam models. Int J Numer Anal Method Geomech 26:1005–1027
Barpi F, Valente S (2004) A fractional order rate approach for modeling concrete structures subjected to creep and fracture. Int J Solids Struct 41(9–10):2607–2621
Barpi F, Valente S (2005) Lifetime evaluation of concrete structures under sustained post-peak loading. Eng Fract Mech 72:2427–2443
Barpi F, Valente S (2008) Modeling water penetration at dam-foundation joint. Eng Fract Mech 75(3–4):629–642. https://doi.org/10.1016/j.engfracmech.2007.02.008
Cornelissen HAW, Hordijk DA, Reinhardt HW (1986) Experimental determination of crack softening characteristics of normal and lightweight concrete. Heron 31:45–56
Barpi F, Valente S (1998) Size-effects induced bifurcation phenomena during multiple cohesive crack propagation. Int J Solids Struct 35(16):1851–1861
Alberto A, Antonaci P, Valente S (2011) Damage analysis of brick-to-mortar interfaces. In: 11th international conference on the mechanical behavior of materials, pp 1151–1156
Bocca P, Grazzini A, Masera D et al (2011) Mechanical interaction between historical brick and repair mortar: experimental and numerical tests. J Phys 305
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Grazzini, A., Lacidogna, G., Valente, S., Accornero, F. (2019). Detachment Monitoring of Repair Mortar Applied to Historical Masonry Stone by Acoustic Emission Technique. In: Aguilar, R., Torrealva, D., Moreira, S., Pando, M.A., Ramos, L.F. (eds) Structural Analysis of Historical Constructions. RILEM Bookseries, vol 18. Springer, Cham. https://doi.org/10.1007/978-3-319-99441-3_236
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DOI: https://doi.org/10.1007/978-3-319-99441-3_236
Publisher Name: Springer, Cham
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