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Determination of the formwork strength of concrete using a Silver Schmidt hardness tester
Janka, Marek ; Kocáb, Dalibor (referee) ; Cikrle, Petr (advisor)
This bachelor thesis deal with the issues of nondestructive testing of the formwork removal strength of concrete. It works with two different compositions of concrete and for both of them, it determines the relation between compressive strength and surface hardness obtained by the SilverSchimdt hammer with mushroom plunger. It shows inappropriateness of ultrasonic impulse method to determine formwork removal strength. It compares obtained relations with each other and with the literature. The goal of this thesis is to utilize determined relations for verification of minimal requested formwork removal strength during construction.
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Possibilities of using GPR to detect reinforcement of concrete structures
Filipu, Martina ; Heřmánková, Věra (referee) ; Anton, Ondřej (advisor)
The aim of this study is to outline how is GPR used to detect reinforcement in concrete structures. In each part the study deals with diagnostic testing methods used for building construction and shows a recognisability of steel reinforcement in concrete. Then it closely examines applications of GPR in a diagnostics of reinforced concrete structures with using Hilti PS 1000 device. In the practical part I conducted a building survey of wall silo using GPR and electromagnetic indicators. The aim was to identify the position of reinforcement which was subsequently compared with the project documentation. The construction survey was carried out as a reason of several serious defects such as cracks and tilting of major part of one of the silo walls.
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Application of GPR method for detection of structural failures
Křepelka, Jan ; Láník, Jaromír (referee) ; Cikrle, Petr (advisor)
This Bachelor thesis deals with the non-destructive testing, which enable researches of failures in concrete inner structure. In the theoretical part of the thesis, selected methods are described based on their principles. Specific possibilities of use, abilities and limits are based on the method’s principle. In the practical part, the thesis focuses on Ground Penetrating Radar with the usage of a new multi-frequency scanning technology. The measurements took place with commonly used Ground Penetrating Radar Hilti PS 1000 X Scan and also with newly available Ground Penetrating Radar Proceq GPR Live. Not only the measurement results of model solids were compared, but also of real bridge construction.
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Application of GPR method for detection of structural failures
Křepelka, Jan ; Láník, Jaromír (referee) ; Cikrle, Petr (advisor)
This Bachelor thesis deals with the non-destructive testing, which enable researches of failures in concrete inner structure. In the theoretical part of the thesis, selected methods are described based on their principles. Specific possibilities of use, abilities and limits are based on the method’s principle. In the practical part, the thesis focuses on Ground Penetrating Radar with the usage of a new multi-frequency scanning technology. The measurements took place with commonly used Ground Penetrating Radar Hilti PS 1000 X Scan and also with newly available Ground Penetrating Radar Proceq GPR Live. Not only the measurement results of model solids were compared, but also of real bridge construction.
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Determination of the formwork strength of concrete using a Silver Schmidt hardness tester
Janka, Marek ; Kocáb, Dalibor (referee) ; Cikrle, Petr (advisor)
This bachelor thesis deal with the issues of nondestructive testing of the formwork removal strength of concrete. It works with two different compositions of concrete and for both of them, it determines the relation between compressive strength and surface hardness obtained by the SilverSchimdt hammer with mushroom plunger. It shows inappropriateness of ultrasonic impulse method to determine formwork removal strength. It compares obtained relations with each other and with the literature. The goal of this thesis is to utilize determined relations for verification of minimal requested formwork removal strength during construction.
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Possibilities of using GPR to detect reinforcement of concrete structures
Filipu, Martina ; Heřmánková, Věra (referee) ; Anton, Ondřej (advisor)
The aim of this study is to outline how is GPR used to detect reinforcement in concrete structures. In each part the study deals with diagnostic testing methods used for building construction and shows a recognisability of steel reinforcement in concrete. Then it closely examines applications of GPR in a diagnostics of reinforced concrete structures with using Hilti PS 1000 device. In the practical part I conducted a building survey of wall silo using GPR and electromagnetic indicators. The aim was to identify the position of reinforcement which was subsequently compared with the project documentation. The construction survey was carried out as a reason of several serious defects such as cracks and tilting of major part of one of the silo walls.
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