The strong diffusion of Fiber Reinforced Cementitious Matrix (FRCM) composites for the reinforcement of historic masonry constructions requires suitable experimental techniques for assessing possible defects in the adhesion between FRCM and masonry, and between FRCM layers. To this aim, in this paper, an innovative nonlinear ultrasonic approach based on the Side-band Peak Count (SPC) technique is proposed. This approach is discussed and validated through experimental tests made on tuff substrates reinforced with FRCM mortars embedding a basalt fibers grid and having known artificial defects at the adhesion between tuff and FRCM as well as in the fiber grid.
Non-destructive assessment of the adhesion at the interface between FRCM reinforcements and masonry substrates by non-linear ultrasonic technique / Castellano, Anna; Fraddosio, Aguinaldo; Kundu, Tribikram; Piccioni, Mario Daniele - In: 12th International Conference on Structural Analysis of Historical Constructions - SAHC 2021 / [a cura di] P. Roca, L. Pelà, C. Molins. - ELETTRONICO. - Barcelona, Spain : International Centre for Numerical Methods in Engineering (CIMNE), 2021. - ISBN 978-84-123222-0-0. - pp. 722-733
Non-destructive assessment of the adhesion at the interface between FRCM reinforcements and masonry substrates by non-linear ultrasonic technique
Anna Castellano;Aguinaldo Fraddosio;Mario Daniele Piccioni
2021-01-01
Abstract
The strong diffusion of Fiber Reinforced Cementitious Matrix (FRCM) composites for the reinforcement of historic masonry constructions requires suitable experimental techniques for assessing possible defects in the adhesion between FRCM and masonry, and between FRCM layers. To this aim, in this paper, an innovative nonlinear ultrasonic approach based on the Side-band Peak Count (SPC) technique is proposed. This approach is discussed and validated through experimental tests made on tuff substrates reinforced with FRCM mortars embedding a basalt fibers grid and having known artificial defects at the adhesion between tuff and FRCM as well as in the fiber grid.I documenti in IRIS sono protetti da copyright e tutti i diritti sono riservati, salvo diversa indicazione.