Assessment of Concrete Quality of Load-Bearing Structure of the Bridge across Otava River No. 121-006 near Zvikov after Fifty Years of Operation in Severe Environmental Conditions

Abstract:

This paper is introducing results of diagnostic survey of bridge no. 121-006 across Otava river near Zvikov [1], focusing on assessment of quality of concrete mix used for load-bearing structure of the bridge after more than 50 years of operation and assessment of reconstruction works (monolithic assembly of central joints of main fields) executed in 1994 [2]. Visual inspection of monolithic assembly joints, comparison of depth of concrete carbonation and thickness of top layer of reinforcement concrete and concrete compression strength are presented in this paper.

• Periodical: Key Engineering Materials (Volume 722)
• Pages: 72-78
• DOI: https://doi.org/10.4028/www.scientific.net/KEM.722.72
• Online since: December 2016
• Authors: Stanislav Rehacek*, David Citek, Jiří Kolisko, Petr Huňka
• Keywords: Bridge, Carbonation, Concrete, Strength

References

[1] Technical report no.: 1500 J 052 - Construction and technical research supporting the bridge structure no. 121-006, Bridge across Otava river, Klokner Institute, CTU in Prague, 06/(2015).

[2] TP 72: Diagnostic survey of bridges PK, Pontex spol s r. o., December (2008).

[3] Bridge leaflet: Bridge across Otava river in Zvikov, Bridge no. 121-006, 1 page, submitted by the Client.

[4] The bridge inspection, Bridge no. 121-006, Bridge across Otava river, Pisek district, made by Správa a údržba silnic Jihočeského kraje (Roads management and maintenance - South-Bohemia region, june (2013).

[5] Scanned drawings (plan view, cross sections and details) total of 42 pages, ProMo spol. s r. o., the project of reconstruction of the bridge across the Otava near Zvikov, a project to supply competition in January 1993, submitted by the client representative Bc. Pavla Pulcová.

[6] TKP 31: Repair of concrete structures, Ministry of Transport, Department of Infrastructure Approved byMD-OI, č. j. 318/08-910-IPK/1, Prague, May (2009).

[7] TP SSBK III: Technical conditions for the rehabilitation of concrete structures.

[8] ČSN 73 1373: Hardness testing methods of concrete.

[9] ČSN ISO 13822: Principles of design of structures - Assessment of existing structures, (January 2015), including the newly released CSN 73 00 38.

[10] ČSN EN 12504-2: Testing concrete in structures. Part 2: Non-destructive testing - Determination of rebound number (March 2002).

DOI: 10.3403/30397523

[11] ČSN EN 13791: Assessment of concrete compressive strength in structures and precast concrete parts.

[12] ČSN EN 12504-1: Testing concrete in structures - Part 1: Cored specimens - withdrawal, examining and testing in compression.

DOI: 10.3403/02050563u

[13] TKP 18: Specifications for road construction, Ministry of Transport, Department of roads Approved MD-OPK ref 474/05-120-RS/1, Prague, August (2005).

[14] Consultation with doc. Ing. Vladislav Hrdouškem, PhD. During the diagnostic work and during the preparation of expert reports.

[1] .

[15] Lubomír Kopecký, Pavel Padevět, Vít Šmilauer, Zdeněk Bittnar, Analysis of the concrete body of the dam Orlik, after fifty years, Beton TKS 2/(2014).