Traditionally, reinforcement and consolidation of masonry structures has been done according to one of the following approaches, or a combination of them: By using materials with a very different nature and behaviour from the original ones in the reinforced structure or by increasing the section of those structures, increasing, therefore, their hardness. The first approach could unleash serious setbacks in the original structure. Using materials with high elastic modulus on more flexible elements might generate new tensions in the system, which previously did not exist, compromising the reinforcement intervention. The second approach implies increasing significantly the structural geometry and, therefore, its own global hardness. The modern approach, which reinforcement and consolidation of masonry structures pursue, is solving both, different nature of materials and sectional increasing. It is done by using compatible materials with the original structure, combining the elastic behavior of them and assuring the original breathability, and implementing low thickness interventions in order to do not modify the original hardness. The proposal of a reinforcement system compatible with the historic and architectonic nature of the structure, is based on a mineral matrix of hydraulic natural lime, GeoCalce F Antisismico, combined with basalt fiber fabrics (GeoSteel Grid) or galvanized steel unidirectional bands (GeoSteel HardwireTM). With this system typology, it is ensured an improvement in the mechanical resistances of the structure, based on a simple and low thickness application. The aim of the exposition is introducing a reinforcement and consolidation system for masonry structures developed by Kerakoll and showing several success cases, in Spain and Italy, reinforced with this system. Each case will be explained from the initial study phase to the execution of the intervention, including the calculations to determine the application to be done.

Full document

The PDF file did not load properly or your web browser does not support viewing PDF files. Download directly to your device: Download PDF document


[1] Casadei P. and Agneloni E. Advance composites applications on historical structures in Italy: Case studies and future developments 6th International Conference on Structural Analysis of Historical Construction – Preserving Safety and Significance, Bath, United Kingdom, July 2-4, 2008, ISBN Vol.2:978-0-415-48107-6.

[2] Casadei P. and Agneloni E. Case Studies on Advanced Composite Materials for Civil Engineering and Architectural Applications Structural Engineering International, vol.21, 3/ 2011, 271-278.

[3] Casadei P., Nanni A., Alkhrdaji T., Thomas J. Performance of Double-T prestressed concrete beams strengthened with Steel Reinforced Polymer. Adv Struct Eng 2005;8(4):427-442.

[4] Casadei P., Nanni A., Alkhrdaji T. Steel-Reinforced Polymer: an innovative and promising material for strengthening the infrastructures. Concr Eng Int 2005;9(1):54-56.

[5] De Santis S., de Felice G., Napoli A., Realfonzo R Strengthening of Structures with Steel Reinforced Polymers: A state-of-the-art review. Compos Part B: Eng, 2016; 104:87-110

[6] De Santis S., Casadei P., De Canio G., de Felice G., Malena M., Mongelli M., Roselli I. Seismic performance of masonry walls retrofitted with steel reinforced grout. Earthquake Engineering and Structural Dynamics, 2016;45(2):229-251. DOI: 10.1002/eqe.2625.

[7] De Santis S., Casadei P., de Felice G. Tests on the bond performance of mortar based strengthening systems on masonry substrates. Proc. Int. Conf. IMC’14 - 9th International Masonry Conference (Guimarães, Portugal, 7-9 July 2014). ISBN: 978-972-8692-85-8.

[8] Faella C, Napoli A, Realfonzo R. Seismic behaviour of RC beam-column joints strengthened with steel fiber composite materials. In: Proceedings of XVI Convegno ANIDIS, L’Aquila, 2015 (in Italian).

[9] Napoli A., Realfonzo R., Casadei P. Rinforzo a flessione di solette in c.a. con sistemi in SFRP/SFRCM. In: Proceedings of XX Congresso CTE, Milano, Italy, 2014 (in Italian).

[10] Napoli A., Realfonzo R., Petracca M., Candeloro F., Camata G., Casadei P. Flexural strengthening of RC slabs with SRP/SRG: an experimental-numerical comparison. In: Proceedings of ACE 2015, Vietri sul Mare, Salerno, Italy, 2015.

[11] Napoli A., Realfonzo R. Compressive behavior of concrete confined by SRP wraps. Construction and Building Materials 2016 (in press).

Back to Top

Document information

Published on 30/11/21
Submitted on 30/11/21

Volume Repair and strengthening strategies and techniques, 2021
DOI: 10.23967/sahc.2021.205
Licence: CC BY-NC-SA license

Document Score


Views 7
Recommendations 0

Share this document

claim authorship

Are you one of the authors of this document?