Laboratory of Load-bearing structures

  Faculty of Civil Engineering

  Department:       Department of Concrete Structures and Bridges
  Contact person:  Prof. Ing. Juraj Bilčík, PhD.
  Contact:               +421 2 5927 4546
  e-mail:                  juraj.bilcik@stuba.sk
  

Description:

Focus of research activities on:

• concrete structures service life and probability analysis, durability of concrete structures,
• ultra high performance concrete,
• slender columns and reliability analysis,
• prestressed concrete structures and secondary effects at post-tensioned multispan continuous structures,
• repair and strengthening of concrete structures, use of CFRP materials,
• composite steel-concrete members, high-resistance columns and punching shear resistance of flat slabs,
• watertight concrete structures,
• structural fire design of concrete and masonry structures.

Most of experimental verifications are realized in Laboratory of load-bearing structures as a part of Central laboratories of the Faculty of Civil Engineering.

 

Projects: 

• Reliability and durability of concrete and composite steel and concrete structures (1/0696/14): 2014 – 2016 – VEGA – Ľ. Fillo

• Risk analysis of design and execution reliability of concrete structure (1/0583/15): 2015 – 2017 – VEGA – J. Bilčík

• Diagnosis of Oldest Reinforced Concrete Bridges in Slovakia (2013-2015, HALVONÍK, J.), VEGA 1/0690/13

• Historical Experience and Current Requirements for the Design of Concrete Bridges and Knowledge Transfer of Information Acquired in Technical Practice (2013-2016, HALVONÍK, J.), APVV-0442-12

 

Publications:

The most interesting publications of last period:

• Gajdošová, K. – Bilčík, J.: Full-Scale Testing of CFRP-Strengthened Slender Reinforced Concrete Columns. In: Journal of Composites for Construction, ISSN 1090-0268, Vol. 17, No. 2 (2013), pp. 239-248 (in English)

• Bilčík, J. – Halaša, I.: Requirements for Watertight Parts of Concrete Buildings Structures. In: Beton: Technologie - Konstrukce - Sanace, ISSN 1213-3116, Vol. 13, No. 1 (2013), pp. 80-83 (in Slovak)

• Bilčík, Juraj - Chandoga, Milan: Strengthening and sealing of concrete structures by external prestressing. In: Realizace staveb. - ISSN 1802-0631. - Vol. 8, No. 1 (2013), pp. 18-20 (in Slovak)

• Borzovič, Viktor - Laco, Ján: Bond stress-slip behaviour prestressing units coated with corrosion protection. In: Sborník vědeckých prací Vysoké školy báňské - Technické univerzity Ostrava. - ISSN 1213-1962. - Vol. 13, No. 2 (2013), pp. 11-18 (in English)

• Gramblička, Š.: Errors and Failures of Load-Bearing Structures of Buildings. In: Stavebnictví, ISSN 1802-2030, Vol. 7, No. 5 (2013), pp. 50-54 (in Slovak)

• Harvan, I.: Shear Resistance of Girderless Concrete Slabs Using Eurocode 2. In: Stavebnictví, ISSN 1802-2030, Vol. 7, No. 11-12 (2013), pp. 52-57 (in Slovak)

• Paulík, Peter: Selected concrete bridges built in Slovakia. In: Beton. Technologie - Konstrukce - Sanace. - ISSN 1213-3116. - Vol. 13, No. 4 (2013), pp. 43-47 (in Slovak)

• Benko, Vladimír: The seismic design of bridges.Pushover analysis. In: Inžinierske stavby. - ISSN 1335-0846. - Vol. 61, No. 6 (2013), pp. 134-136 (in English)

• Bilčík, Juraj: Additional enhancing the punching shear resistance of flat slabs. In: Inžinierske stavby. - ISSN 1335-0846. - Vol. 61, No. 6 (2013), pp. 104-107 (in English)

• Gajdošová, Katarína - Brondoš, Jakub - Bilčík, Juraj: Full-scale testing og concrete elements strengthened with CFRP. In: Inžinierske stavby. - ISSN 1335-0846. - Vol. 61, No. 6 (2013), pp. 113-117 (in English)

• Gramblička, Štefan - Veróny, Peter: Transverse reinforcement in reinforced concrete columns. In: SSP - Journal of civil engineering. - ISSN 1336-9024. - Vol. 8, No. 2 (2013), pp. 41-50 (in English)

• Halaša, I. – Bilčík, J.: Concrete for Watertight Concrete Structures. In: Stavebné hmoty, ISSN 1336-6041, Vol. 9, No. 1 (2013), pp. 30-32 (in Slovak)

• Halvoník, Jaroslav - Dolnák, Juraj: Longterm prestress losses in pretesioned members cast from HPC. In: Inžinierske stavby. - ISSN 1335-0846. - Vol. 61, No. 6 (2013), pp. 113-117 (in English)

• Hudoba, I. – Mikuš, J. – Dovál, M.: Possibilities of the Utilization of a New Generation of Concrete in Concrete Elements and Structures. In: Stavebné materiály, ISSN 1336-7617, Vol. 9, No. 2 (2013), pp. 24-26 (in Slovak)

• Ignačák, Miroslav - Šoltész, Július: Innovative approach to the assement of base slabs,industrial floors and concrete pavements in early stage. In: Inžinierske stavby. - ISSN 1335-0846. - Vol. 61, No. 6 (2013), pp. 130-133 (in English)

• Ignačák, M. – Šoltész, J.: Infuence of Hydration Heat on Base Slabs in Early Stages. In: Stavebné materiály, ISSN 1336-7617, Vol. 9, No. 1 (2013), pp. 24-25 (in Slovak)

• Paulík, Peter: The most interresting bridges in Slovakia. 1st part: First reinforced concrete bridges. In: Inžinierske stavby. - ISSN 1335-0846. - Vol. 61, No. 2 (2013), pp. 24-29 (in Slovak)

• Paulík, Peter - Hudoba, Igor: The air permeability of high performance fiber reinforced concrete. In: Inžinierske stavby. - ISSN 1335-0846. - Vol. 61, No. 6 (2013), pp. 154-159 (in English)

 

Cooperation & realized experimental verifications:

Experimental analysis of composed multi-span prestressed girders with reinforced concrete slab. Loading test of two-span prestressed beam. 

Non-linear behaviour of composed concrete girders. Deformed girder before failure.

Post-tensioned girder before testing focused on the effect of secondary effects of prestressing and stresses in prestressing units bond.

Testing of composite steel-concrete columns, partially concreted cross-section. The use of high strength concrete.

Verification of strengthened members. Test set up of (a) short columns; (b) slender columns; (c) girders under impact load.

The influence of aggressive chemical environment on behaviour of HPFRC in conditions of long-term bending performance

Effect of corrosion to the bond between concrete and reinforcement. Maceration of concrete specimens in water (preparation to the accelerated test of reinforcement corrosion).

Elaboration of thermodynamics and strength finite element model to analyze the impact of factors affecting the size of the thermal stress, the formation and development of cracks in concrete structures. The model is particularly suitable tool for the analysis of 2D concrete structures with an emphasis on functionality and durability such as base slabs watertightness concrete structures, industrial floors and concrete pavements. Experimental measurement of the development of the hydration heat of the 3m thick base slab of new mill in VW Slovakia. Application of thermocouples.

Project of pervious concrete in collaboration with the University of Auckland (New Zealand) and local concrete suppliers in order to develop a standard for this type of concrete. Figures: The pervious concrete - drill core from the test panels - University of Auckland, New Zealand, Test of pervious concrete panel - University of Auckland, New Zealand.