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Assessment of the strength of concrete structures by a combination of non-destructive and destructive methods
Masařík, Dominik ; Kocáb, Dalibor (referee) ; Cikrle, Petr (advisor)
This bachelor's thesis is about a combination of destructive and non-destructive methods, including a description of the most modern devices of reflection hardness testers. Further on, an analysis of the new norm ČSN EN 13791 is performed. The practical part of the thesis is about measuring on concrete bodies using the latest rebound hardness tester SilverSchmidt, ultrasonic pulse method and tests of compressive strenght of concrete on individual bodies. The evaluation took place on the base of established linear and quadratic regressions on the test specimens. In situ compressive strength was deternibed according to the procedures specified in the ČSN EN 13791 standard.
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Diagnostics in the case of evaluating of current state of a building
Kopec, Jan ; Láník, Jaromír (referee) ; Schmid, Pavel (advisor)
This work deals in the theoretical part in its theoretical part with a summary and detailed description of selected diagnostic methods that were applied to selected structural parts of an existing bridge structure within the practical part. The thesis also deals with the basic terminology and terminology in the field of bridge construction, subsequently, in its practical part deals in terms of diagnostics, the implementation of structural and static survey and subsequent evaluation of the current structural, technical and static state on selected structural units of existing reinforced concrete bridge structures
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Survey and Diagnostics of Building Construction
Haloun, Jan ; Cikrle, Petr (referee) ; Anton, Ondřej (advisor)
The topic of the first part of this bachelor thesis covers the methods of diagnostics of reinforced concrete constructions and their practical application. In the theoretical part are described the methods currently used with diagnostics of reinforced concrete constructions with focus on methods used in practical part. The practical part covers the survey of reinforced concrete constructions and its evaluation. The main objects of the practical part were the detection of the strength class of concrete and real reinforcement of certain elements.
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Verification of the usability ultrasonic pulse method for the assessing of frost resistance of concrete bricks
Kašparová, Jana ; Hubáček, Adam (referee) ; Brožovský, Jiří (advisor)
Purpose of Bachelor thesis is to verify use of the utrasonic impulsive method to determine frost resistence of the concrete. Theoretical part disscusses about basic characteristic of a vibropressed concrete, description of a causes of frost and defrosting on the concrete. As well further factor simple menting frost resistance are reviewed. Summary is followed with standard requirements forwall concrete elements, trial proceduresfor non destructive and destructive methods for concrete and other construction materials and thein evaluation systems. Second part of Bachelor thesis is dedicated to analyse and evaluate results and relationship of trials used for testing of a concrete brick in frost resistence with use of cyclic freezing and use of a trial non destrucive ultrasonic impulsive method as well destructive mode.
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Diagnostics methodology of historical brickwork
Bakešová, Martina ; Cikrle, Petr (referee) ; Anton, Ondřej (advisor)
The aim of my bachelor’s thesis is to carry out historical overview of progress of masonry building elements and structures, including their thorough methodology of diagnostics. The introduction text is considering historical progress of masonry elements in Czech Republic and abroad. As following are described brick manufacturing methods of present and past, which is closely related to the progress of brick dimensions and its visual appearance. On sample specimen can be observed mentioned progress in the visual appearance, mechanical properties and so on. The diagnostics of masonry structures is realised via particular tests described in the thesis. Important tests used for overall evaluation are determining brick dimensions, it is volume density, absorption, compressive strength determined via destructive and non destructive methods. Also flexural tensile strength and compressive strength of the mortar. Output of my thesis is overall evaluation of all parts mentioned above.
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