Detachment of Plasters in Masonry Buildings: Analysis by Acoustic Emission and Numerical Simulation

Proceedings

Lacidogna, Giuseppe¹  Grazzini, Alessandro²  Valente, Silvio³ 

[1] Author to whom correspondence should be addressed.;Department of Structural, Geotechnical and Building Engineering, Politecnico di Torino, 10129 Turin, Italy;Presented at the 18th International Conference on Experimental Mechanics (ICEM18), Brussels, Belgium, 1–5 July 2018

关键词: historical masonry;    acoustic emission;    plaster detachment;    repair mortar;    laboratory test;   

DOI  :  10.3390/ICEM18-05431

学科分类：社会科学、人文和艺术（综合）

来源: mdpi

【 摘 要 】

An innovative laboratory procedure is described for testing the mechanical adhesion of new dehumidified mortars applied in the restoration works. A specific adherence test was carried out on composite specimens made by stone block and repair mortar. During the laboratory test the acoustic emission (AE) technique was employed, in order to estimate the amount of energy released from fracture propagation in the adherence surface between mortar and stone. A numerical simulation follows the experimental data. The evolution of detachment process of mortar in a coupled stone brick–mortar system was analysed by AE signals, which can improve the numerical model and predict the failure mode in the adhesion surface of repair plaster.

【 授权许可】

CC BY