Laboratory Measurements of Masonry Using Post-Tensioning

Abstract:

Contribution deals with laboratory measurements of deformations in the place exposed to local load caused by additional pre-stressing. The measurements are made at the masonry corner built in the laboratory equipment. The laboratory equipment was designed at Faculty of Civil Engineering VSB - TU Ostrava for measurement tri-axial stress-strain conditions in masonry. In this masonry corner two pre-stressing bars are placed. These bars are in different height and are anchored to the anchor plates, which transfer pre-stressing forces to the masonry. The masonry was pre-stressed in the both directions. The specimen for laboratory testing is performed in the proportion to the reality of 1:1.

• Periodical: Advanced Materials Research (Volumes 838-841)
• Pages: 2000-2003
• DOI: https://doi.org/10.4028/www.scientific.net/AMR.838-841.2000
• Online since: November 2013
• Authors: Marie Stara*
• Keywords: Deformation, Masonry, Measurement, Pre-Stressing

References

[1] P. Schubert, G. Hoffmann: Druckfestigkeit von Mauerwerk parallel zu den Lagerfugen. Mauerwerk-Kalender 1994, Ernst Sohn & Berlin (2004).

DOI: 10.1002/dama.200490074

[2] Z. Bazant, L. Klusacek: Structural Analysis at Redevelopment of Buildings. VUT Brno, (2004).

[3] L. Klusacek, Z. Bazant: Structures Post-tensioning in Relation to Subsoil. The proceedings of the 13th International Seminary 2008, Ostrava 2008. VSB-TU Ostrava 2008, s. 21 – 26. ISBN 978-80-248-1715-6.

[4] P. Kosatka, K. Lorenz, J. Vaskova: Masonry structures 1. CVUT Prague, (2006).

[5] P. Sulak: Long–term Monitoring of Post-tensioned Structure. The proceedings of the 13th International Seminary 2008, Ostrava 2008. VSB-TU Ostrava 2008, s. 27 – 33. ISBN 978-80-248-1715-6.

[6] L. Mynarzova: Static Analysis of Masonry Structures. Dissertation thesis 2009. VSB-TU of Ostrava 2009. ISBN 978-80-248-2064-4.

[7] CSN EN 1052-1 Methods of Test for Masonry, Part I, Determination of Compressive Strength, CEN Brussels (2000).

[8] CSN EN 1015-11 Methods of Test for Mortar for Masonry, Part 11: Determination of Flexural and Compressive Strength of Hardened Mortar, CEN Brussels (2000).

DOI: 10.3403/01905442

[9] CSN ISO 13822 Bases for design of structures - Assessment of existing structures. CEN Brussels (2005).

[10] CSN P ENV 1996-1-1 Design of masonry structures - Part 1-1: General rules for buildings - Rules for reinforced and unreinforced masonry. CEN Brussels (1996).

DOI: 10.3403/00873617u

[11] R. Cajka, M. Stara, P. Mateckova, M. Janulikova: Laboratory measurement of pre-stressed masonry. Transactions of the VSB – Technical University of Ostrava, Civil Engineering Series. Ostrava 2012, ISSN 1213-(1962).

DOI: 10.2478/tvsb-2013-0008