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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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Survey of Reinforced Concrete Structure
Masařík, Dominik ; Anton, Ondřej (referee) ; Cikrle, Petr (advisor)
The thesis deals with the investigation of reinforced concrete structure. The theoretical part is devoted to the general procedures for the evaluation of the existing structure. Then the methods used in the practical part of the survey are described, including state-of-the-art measuring instruments. The part focuses on the standard EN 13 791, which introduces new procedures for the evaluation of the compressive strength of a structure. The practical part deals with the investigation of a reinforced concrete beam floor supported by vertical brick piers. Due to the overloading of the new technology, the beam ceiling is assessed to see if it can accommodate the specified loads from the new equipment. The sampling of the test bodies, determination of the concrete properties, determination of the reinforcement of the individual elements and subsequent loading to the strength class are described. Also included is an evaluation of the characteristic strength of the masonry elements and the subsequent design of the structure.
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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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