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Effect of pollutants and concrete quality on durability and service life of reinforced concrete structures
Mazán, Tomáš ; Láník, Jaromír (referee) ; Hrabová, Kristýna (advisor)
The thesis describes the effects of an aggressive environment on structures in infrastructure that are exposed to adverse influences. The theoretical part of the thesis deals with the classification of different aggressive environments and the chemistry by which they cause degradation of concrete and structures. A substantial part is devoted to the interaction of degradation mechanisms, i.e. the synergistic effect. The practical part describes the experimental procedure, the test methods used and the experiment by which the thesis verifies the theoretical ideas. Based on the theoretical background, the thesis develops a model that simulates the effect of the environment. The execution of the experiment consists in simulating aggressive environments and detecting their influence on the investigated properties. After obtaining the results from the tests in the practical part, the risks that may reduce the durability of the structure are subsequently evaluated with respect to the different phases of the life cycle of the structure. Furthermore, the risks that have a significant impact on durability are evaluated and once arranged, measures are proposed. Finally, the thesis discusses the achieved results of the whole experiment and evaluates how to achieve the reduction of the adverse effects in the different phases of the life cycle of the structure.
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Diagnostics of reinforced concrete construction
Slezáková, Karolína ; Hrabová, Kristýna (referee) ; Láník, Jaromír (advisor)
In the introduction of this bachelor thesis, reinforced concrete is examined, and its basic properties are described in detail. The subsequent sections focus on the methods used for diagnosing building structures. Special attention is given to the selected methods that will be applied in the practical part of this thesis. The aim of the practical part was to increase awareness of the type of material used in the examined load-bearing elements and to familiarize oneself with one of the fundamental non-destructive methods in construction.
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Evaluation of technical conditions of the object
Majtánová, Romana Viktória ; Láník, Jaromír (referee) ; Schmid, Pavel (advisor)
This work deals with construction material research office building with eighteen floors to the street Šumavská 35 in Brno with ground plan dimensions of about 25 x 25 m. The structure consists of a reinforced concrete substructure and floors of steel frame. The scope of the survey will determine the quality of concrete in vertical supporting columns at level 1. PP structures using cores and subsequent laboratory testing. Another task will be to verify the status of moorings steel perimeter columns to the building of reinforced concrete pillars at the boundary of 1st basement and 1st floor.
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Static load test and the assessment ceiling of reinforced concrete structure built in the 1st half of 20th century
Málek, Jaroslav ; Láník, Jaromír (referee) ; Žítt, Petr (advisor)
This master thesis deals with static load test and static assessment of selected segments of reinforced concrete ceiling construction of the Hennebique system at the Faculty of Arts at Masaryk University in Brno. This thesis contains: the execution of the static load test, the data evaluation of the static load test and the data evaluation of the complementary laboratory testing, geometric orientation of bearing elements, the checking of the ceiling placement in the peripheral position, and the diagnosis of the reinforcing of the construction. This thesis also includes the static assessment according to various standard norm rules and the numerical analysis in ATENA software program.
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Diagnosis selected bridge structure
Novák, Jakub ; Láník, Jaromír (referee) ; Žítt, Petr (advisor)
The Diploma thesis deals with the Diagnostics of Reinforced Concrete Bridge in the village of Luhačovice. This thesis also describes the individual Diagnostic methods and instruments used in purpose to make Diagnosis of bridge constructions. The main aim of the Diagnostics is to determine the current state of the Bridge which consists in verification of the actual road structure, determination of the physical and mechanical parameters of the Concrete (strength, depth of carbonation) and in some parts of the bridge structure to determine the type, number and position of the bending or shear reinforcement. Based on the evaluation of the laboratory tests a static calculation of the selected part of the Bridge structure is performed. The final evaluation is the determination of the load and the subsequent design of the necessary and recommended measures for maintaining or improving the functionality of the bridge structure.
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Measurement methods of strain on the construction
Chytil, Jan ; Láník, Jaromír (referee) ; Daněk, Petr (advisor)
The main goal of bachelor thesis is evaluation of methods used for proportional transformation measurement based on the results of concrete panels applied load tests. Next thesis conclusion is comparison of real measured values and values determinated by appropriate static calculation. The first part describes possible measurement methods of construction deformations, drifts and deflections. The second chapter describes in detail tensometric methods of proportional modification on construction. The conclusion recounts measuring instruments application on construction, panels examination consecution and evaluation of acquired data.
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