Head of the project: doc. Ing. Koteš Peter, PhD.              

Research team: prof. Ing. Vičan Josef, CSc., Ing. Hlinka Richard, PhD., doc. Ing. Odrobiňák Jaroslav, PhD., doc. Ing. Brodňan Miroslav, PhD., Ing. Strieška Miroslav, Ing. Vavruš Martin, PhD., Ing. Jančula Miroslav, PhD       

Duration: January 2018 – December 2020                             

The degradation of building materials by chemical or physicochemical action of the surrounding environment is an increasingly serious problem not only in Slovakia. The atmosphere is mainly polluted by industrial activity, which causes an increase in their corrosive aggressiveness. Damage to structural materials due to degradation factors (eg. corrosion processes) causes considerable reconstruction costs. For example, corrosion of reinforcement or structural steel is a major problem long-time faced by construction engineers dealing to maintenance of existing transport infrastructure. Preventing possible corrosion or rehabilitation of corrosion after-effects becomes an important part of maintenance of bridges and structures. The project is focused on study of corrosion characteristics of reinforced concrete structures and bridges and creation of corrosion maps. The is-situ measurements on real structures and small specimens for measurements in test chamber (rapid tests) are proposed to be used in project.

Head of the project: prof. Ing. Moravčík Martin, PhD.

Research team: doc. Ing. Koteš Peter, PhD., Ing. Kotula Patrik, PhD., doc. Ing. Brodňan Miroslav, PhD., Ing. Bujňáková Petra, PhD., Ing. Potočníková Alena, PhD., Ing. Serdelová Katarína, Ing. Krkoška Lukáš   

Duration: January 2015 – December 2018                             

The need for a complex and effective approach to the concrete bridge evaluation is being highly topical at present because of the modern construction system, technology and materials used in the past or new bridges as well have been applied. Presented experimental and theoretical research will be based on the existing results and experiences of the concrete bridges monitoring observed from the construction phases to the service life. It is a complex of time dependent influences acting to the bridge during its service life. The long-term effects as service load, load history, the temperature and the rheology effects on the concrete bridges gradually erected with some changes of the structural scheme in time have been taking into account. In addition to the experimental measurements in-situ and in the laboratory condition the numerical models have been performed to the recorded outputs comparison. It can enable to predict the real bridge structural behavior and real residual reliability determination in time.

Head of the project: doc. Ing. Koteš Peter, PhD.              

Research team: prof. Ing. Vičan Josef, CSc., Ing. Gocál Jozef, PhD., Ing. Hlinka Richard, PhD., Ing. Kotula Patrik, PhD., doc. Ing. Odrobiňák Jaroslav, PhD., doc. Ing. Brodňan Miroslav, PhD., Ing. Bahleda František, PhD., Ing. Strieška Miroslav, Ing. Bujňáková Petra, PhD., Ing. Jošt Jozef, PhD., Ing. Serdelová Katarína          

Duration: January 2015 – December 2017                             

Safety, serviceability and durability are the basic parameters to ensure the reliability of the whole structure or its Safety, serviceability and durability are the basic parameters to ensure the reliability of the whole structure or itsparts. So, the durability is the important parameter for design or evaluation of structures. The durability isinfluenced by degradation processes as corrosion of reinforcement, prestressed steel and structural steel duringbridge structure lifetime or variation of mechanical properties of concrete in form of modulus of elasticity changingdue to freeze-thaw cycling. The presented degradation processes and change of mechanical properties duringstructure lifetime markedly influence the resistance and deformation parameters of structure. The project isfocused on study of corrosion characteristics of reinforced and prestressed concrete structures as well asinfluence of freeze-thaw cycling on change of concrete elasticity modulus. The is-situ measurements on realstructures and small specimens for measurements in test chamber (rapid tests) are proposed to be used inproject.

Head of the project: Ing. Križma Martin CSc.     

Research team: prof. Ing. Moravčík Martin, PhD., Ing. Tesár Alexander DrSc., Ing. Bahleda František, PhD., Ing. Potočníková Alena, PhD., Ing. Jerga Ján CSc., Mgr. Petržala Jaromír PhD.              

Duration: January 2015 – December 2018                             

An experimental and theoretical study of parameters of interaction between a repaired reinforced concrete structure and strengthening elements at cyclic and long-term loading. The issue is directly related to the short-term tests performed within the former VEGA – project 2/0143/12. The following topics will be solved within the project. An influence of rheological features on deformation and stress state of composite cross-sections of strengthened elements. An influence of a type of the contact repaired/strengthening element on resistance and serviceability. An investigation of a time evolution of the interaction of an element with GFRP sheets or with an overconcreted coupling slab, including a contact type. A failure processes analysis by evaluation of strain energy. A diagnostics and prediction of a failure state by a numerical modelling (ATENA 3D) and a comparison with selected experimental measurements. Generation of a results database with the focus on exploitability at optimisation of an bridge design.