Mechanical Properties and Freeze-Thaw Durability of Strengthening Mortars
Publication: Journal of Materials in Civil Engineering
Volume 25, Issue 2
Abstract
An innovative experimental procedure is described that is used as a preliminary design stage for the pre-qualification of strengthening mortars applied to historical masonry buildings. In the analysis of the behavior of masonry structures and their constituent materials, increasing importance has been assumed by the study of the long-term evolution of deformation and mechanical characteristics, which may be affected by both loading and environmental conditions. Through static and fatigue tests conducted in the laboratory on different dimensional reinforced masonry specimens, it has been possible to investigate the durability of strengthening materials. This methodology is useful to select, from a range of alternatives, the most suitable strengthening mortar for historical masonry, and to avoid the errors associated with materials that are not mechanically compatible. Special attention was devoted to fatigue and thermo-hygrometric aspects, the effects of which on masonry are often significant enough to hinder the validity of repair works. The experimental procedure has been effectively used in the biggest restoration building site in Europe, the Royal Palace of Venaria.
Get full access to this article
View all available purchase options and get full access to this article.
Acknowledgments
The financial support provided by the Piedmont Region RE-FRESCOS Project is gratefully acknowledged.
References
Anzani, A., Garavaglia, E., and Binda, L. (2006). “Time dependent behaviour of historic masonry: A probabilistic model.” Proc., 7th Int. Masonry Conf. (IMC) (CD-ROM), BMI, London, 50.
Bocca, P., and Grazzini, A. (2004). “Long term mechanical interaction between strengthening material and pre-existing structures.” Proc., 1st Int. Conf. Innovative Materials and Technologies for Construction and Restoration, Liguori, Lecce, Italy, 2, 176–190.
Bocca, P., Grazzini, A., and Masera, D. (2008). “Shear behaviour of reinforced masonry: efficacy of FRP versus traditional technique.” Proc., 4th Int. Conf. on FRP Composites in Civil Engineering (CICE), M. Motavalli, ed., Swiss Federal Institute of Technology, Empa—Material Science and Technology, Lausanne, Dubendorf, Switzerland, 154.
Cangi, G. (2005). Manuale del recupero strutturale e antisismico, DEI, Rome (in Italian).
Carpinteri, A., Bocca, P., Lacidogna, G., Grazzini, A., and Masera, D. (2006). “Damage evaluation by acoustic emission in brickwork structures under variable amplitude loading.” Proc., 7th Int. Masonry Conf. (IMC) (CD-ROM), BMI, London, 32.
Grazzini, A. (2004). “Analisi sperimentale della durabilità degli interventi di consolidamento sulle murature.” Ph.D. thesis, Dept. of Structural and Geotechnical Engineering, Politecnico di Torino, Italy (in Italian).
Grazzini, A. (2006). “Experimental techniques for the evaluation of the durability of strengthening works on historical masonry.” Masonry Int., 19, 113–126.
Minh-tan, D., Chaallal, O., and Aitcin, P. C. (1993). “Fatigue behaviour of high-performance concrete.” J. Mater. Civ. Eng., 5, 96–111.
Mu, B., and Shah, S. P. (2005). “Fatigue behavior of concrete subjected to biaxial loading in the compression region.” Mater. Struct., 38(3), 289–298.
Taliercio, A., and Gobbi, E. (1996). “Experimental investigation on the triaxial fatigue behaviour of plain concrete.” Mag. Concr. Res., 48(176), 157–172.
Information & Authors
Information
Published In
Journal of Materials in Civil Engineering
Volume 25 • Issue 2 • February 2013
Pages: 274 - 280
Copyright
© 2013 American Society of Civil Engineers.
History
Received: Dec 8, 2011
Accepted: May 25, 2012
Published online: May 30, 2012
Published in print: Feb 1, 2013
Authors
Metrics & Citations
Metrics
Citations
Download citation
If you have the appropriate software installed, you can download article citation data to the citation manager of your choice. Simply select your manager software from the list below and click Download.