[1]
Execution of bridge diagnostics. Supplement 2 – Diagnostic methods for determination of bridge properties, the monitoring of bridges, 2012. Information on: http: /www. ssc. sk/files/ documents/technicke-predpisy/tp2012/tp_07_2012_priloha%202. pdf. (In Slovak).
Google Scholar
[2]
V. Kupilik, Non-destructive identification of damaged layer in concrete structure after fire event, TZB-info, 2011. Information on: http: /stavba. tzbinfo. cz/betonmaltyomitky/7808nedestruk-tivni-identifikace-poskozene-vrstvy-betonu-po-pozaru. (In Czech).
Google Scholar
[3]
M. Drzik, Using of new approaches for ultrasonic non-destrucitve diagnostics of concrete, in Proceedings of 1st International Scientific Seminar Reconstruction of Reinforced Concrete Structures, pp.51-54, 1997. (In Slovak).
Google Scholar
[4]
P. Vrba, Calibration of indirect methods for measurement of properties of alkali activated concrete, VUT, Faculty of Civil Engineering, Brno, 2014. Diploma thesis, Supervisor: Eng. V. Bilek, PhD. (In Czech).
Google Scholar
[5]
J. N. Carino, The Impact-Echo Method: An Overview. Structures, 2001, pp.1-18. doi: 10. 1061/40558(2001)15.
Google Scholar
[6]
P. Cikrle, D. Kocab, Dynamic and static modules of elasticity of concrete, TZB-INFO, 2014. Information on: http: /stavba. tzb-info. cz/beton-malty-omitky/10746-dynamicke-a-staticke-moduly-pruznosti-betonu. (In Slovak).
Google Scholar
[7]
STN 73 2011, Non-destructive testing of concrete structures, SUTN, 1986. (In Slovak).
Google Scholar
[8]
S. Uncik, P. Sevcik, Modulus of elasticity of concrete, TSUS, 23 pp. ISBN 978-80-969182-3-2. (In Slovak).
Google Scholar
[9]
G. Martincek, Theory and methodology of dynamic non-destructive testing of planar elements, Publishing house of Slovak Academy of Science, Bratislava, 1975. (In Slovak).
Google Scholar
[10]
M. Pokorny, J. Jerga, A. Salaj, Measuring thickness in concrete plates, Slovak journal of civil engineering, STU in Bratislava, Vol. XI, No. 3, 2003, pp.26-29. ISSN 1210-3896.
Google Scholar
[11]
M. Pokorny, J. Gasparik, J. Jerga, Automation of phase velocity measurement, Slovak Journal of Civil Engineering, Vol. 1-2, 2000, pp.14-18.
Google Scholar
[12]
M. Pokorny, J. Jerga, Non-destructive testing of concrete coating, in: Proceedings of lectures: Concrete Days 2004, STU in Bratislava, 1st edition, September 2004, 6 pp. ISBN 80-227-2107-7.
Google Scholar
[13]
M. Pokorny, J. Jerga, Damage assessment in concrete by NDT, in: Static, structural and physical problems of civil structures, Proceedings of VII. International conference, November 23-25, 2005, Strbske pleso, Technical University in Kosice, 7 p. ISBN 80-709-742-7/80-8073-404-6.
Google Scholar
[14]
J. Jerga, M. Pokorny, Damage detection of structural element by group velocities, in: Civil and environmental engineering, Vol. 6, no. 2, 2010, pp.104-112. ISSN 1336-5835.
Google Scholar
[15]
B. T. Chen, et al., Effect of Void Ratio of Concrete on Evaluation of P-wave Velocity by Impact-echo Method, in: International Journal of Applied Science and Engineering, Vol 6, No. 3, 2009, pp.199-205.
Google Scholar
[16]
Z. Kalab, M. Lednicka, Theory of formation and propagation of seismic waves. On-line lecture. Information on: http: /homel. vsb. cz/~pin078/TOJU/prednaska10c. pdf. (In Czech).
Google Scholar
[17]
G. Martincek, Dynamic diagnostics of payment, Publishing house of Slovak Academy of Science, Bratislava, 1983. (In Slovak).
Google Scholar
[18]
Information on http: /geol. jex. cz/menu/zemetreseni. (In Slovak).
Google Scholar
[19]
Information on http: /kmi2. uniza. sk/wp-content/uploads/2010/12/KKM-NDTvnutorne. pdf. (In Slovak).
Google Scholar
[20]
J. Kukucka, S. Svehla, Ultrasonic and its using in industry, STU, Bratislava, 1962. (In Slovak).
Google Scholar
[21]
B. Leitner, Non-destructive testing of materials – ultrasonic control, Slovgas, Slovak Gass and Coal-Oil Alliance, Vol. 1, 2006, pp.15-20. ISSN 1335-3853. (In Slovak).
Google Scholar
[22]
O. Anton, et al., Testing and technologies, Laboratory exercises, VUT, Brno. (In Czech).
Google Scholar
[23]
M. Pokorny, P. Makys, Calibration of ultrasonic testers using steel cylinder elements. Author'archive.
Google Scholar
[24]
Information on https: /www. ptsndt. com/sk/predaj/ut-skusanie-ultrazvukom/uthrubkomery/ item/285-mereni-tloustky-ultrazvukem. (In Slovak).
Google Scholar
[25]
STN 73 1371 Method of ultrasonic pulse testing of concrete, SUTN, 1981. (In Slovak).
Google Scholar
[26]
STN 73 1373 Testing of concrete by hardness testing method, SUTN, 1981. (In Czech).
Google Scholar
[27]
G. Martincek, M. Pokorny, Non-destructive methods for material testing of pavement and its multilayer system. Final report from State research project P-12-526-262-02. 1, VUIS, Bratislava. (In Slovak).
Google Scholar
[28]
STN 73 1370 Non-destructive testing of concrete, Common regulations, SUTN, 1981. (In Czech).
Google Scholar