Influence of the Composition of Cement Mortars Modified by Lime or Polymers on the Mechanical Properties and Microstructure of Mortars

Abstract:

Cement – polymer composites are nowadays widely used in repair systems not only in case of concrete or reinforced concrete constructions but also in masonry. Polymers addition for example already at 5% m.c. modifies the structure of the cement – polymer composite in a way that many of the mechanical properties such as flexural strength, tensile strength or adhesion to substrates are improved. The paper presents the results of tests such as flexural, compressive or adhesion strength to ceramic substrate of hardened cement mortars with different composition, as well as selected cement mortars modified by two polymers: polyvinyl alcohol and styrene – butadiene polymer dosed at 5 % m.c. Four types of cement mortars modified by lime (component used in historical constructions as well as in contemporary masonry mortars) are also examined for comparison.

• Periodical: Key Engineering Materials (Volumes 592-593)
• Pages: 647-650
• DOI: https://doi.org/10.4028/www.scientific.net/KEM.592-593.647
• Online since: November 2013
• Authors: Małgorzata Lenart
• Keywords: Cement Mortar, Lime, Mechanical Property, Microstructure, Polymer

References

[1] J.A. Larbi: Constr. Build. Mat. Vol. 18 (2004), pp.299-307.

[2] G. Cultrone, E. Sebastian, M. Ortega Huartas: Constr. Build. Mat. Vol. 21 (2007), pp.40-51.

[3] A. Kwiecień, M. Gruszczyński, B. Zając: Key Eng. Mat. Vol. 466 (2011), pp.225-239.

[4] J. Lanas, J.I. Alvarez: Cem. Concr. Res. Vol. 33 (2003), pp.1867-1876.

[5] A. Moropoulou, A. Bakolas, P. Moundoulas, E. Aggelakopoulou, S. Anagnostopoulou: Vol. 27 (2005), pp.289-294.

DOI: 10.1016/j.cemconcomp.2004.02.017

[6] L. Czarnecki, P. Łukowski: Mat. Bud. Vol. 434 (2008), pp.3-7 (in Polish).

[7] M. Lenart: Procedia Engineering Vol. 57 (2013), pp.687-696.

[8] Z. Su, K. Sujata, J.M. Bijen, H.M. Jennings, A.L.A. Fraaij: Adv. Cem. Bas. Mat. Vol. 3 (1996), pp.87-93.