XIII Međunarodno naučno-stručno savetovanje Ocena stanja, održavanje i sanacija građevinskih objekata (str. 464-473)
АУТОР(И) / AUTHOR(S): Mile Dimitrovski
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DOI: 10.46793/SGISXIII.47MD
САЖЕТАК / ABSTRACT:
This paper presents the special construction works carried out during the rehabilitation of the „Belasica“ bridge, after the fire damage on its first and middle span. Advanced techniques for assessing the condition of the structure, including methods of visual inspection and non-destructive testing (NDT), were used to evaluate the extent of the damage and determine the rehabilitation strategies. The results of the conducted tests indicated that the concrete retained its compressive strength and the prestressing cables were not damaged. Repair efforts focused on special interventions, such as hydrodemolition to remove the damaged concrete and restore the bearings. Tests conducted after the rehabilitation confirmed the bridge’s capacity to safely handle traffic loads, highlighting the effectiveness of the repair measures. This paper provides valuable insights into effective bridge rehabilitation strategies, serving as a model for future projects and contributing to the advancement of bridge engineering practices.
КЉУЧНЕ РЕЧИ / KEYWORDS:
fire damage, NDT, hydrodemolition, explosive spalling, rehabilitation, shotcrete
ЛИТЕРАТУРА / REFERENCES:
[1] ACI Committee 506. (2009). Guide to Shotcrete (ACI 506R-05). American Concrete Institute. ISBN 978-0870313497.
[2] European Committee for Standardization. (2004). EN 1504-2: Products and systems for the protection and repair of concrete structures – Definitions, requirements, quality control, and evaluation of conformity – Part 2: Surface protection systems for concrete. Brussels: CEN.
[3] European Committee for Standardization. (2004). EN 1504-9: Products and systems for the protection and repair of concrete structures – Definitions, requirements, quality control, and evaluation of conformity – Part 9: General principles for the use of products and systems. Brussels: CEN.
[4] Fagerlund, G. (1993). Hydrodemolition of Concrete Structures: A Guide for Best Practice. Swedish Cement and Concrete Research Institute.