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The effect of the shrinkage reducing additives on rheological properties of high-strength concrete
Červenka, Jiří ; Kucharczyková, Barbara (referee) ; Daněk, Petr (advisor)
Master’s thesis examines the effect of the shrinkage reducing additives on rheological properties of high-strength concrete. The first part is focused on high-strength concrete in terms of their composition and properties. The second part contains a detailed analysis of the cementitious composites shrinkage problems. Total shrinkage is divided into individual elementary shrinkages. For each of them there is a detailed description of causes and factors that affect their sizes. The next part describes the basic additives used to reduce the shrinkage of cementitious composites. The experimental part is focused on verifying the effectiveness of the shrinkage reducing additives during preparation of high-strength concrete. Usage of shrinkage drains for relative strain measurement enables to determine the process of shrinkage immediately after placing the concrete in the form and to obtain the overall curve of the hight-strength concrete volume changes during its setting and hardening. At the end of the thesis, there are overall analysis and summary of the results of the performed experiments.
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Business Plan
Štencl, František ; Daněk, Petr (referee) ; Veselý, Josef (advisor)
This master’s thesis deal with processing of business plan for the establishment of boulder&bar. Prospectus project results from accumulated information, analysis of present state of specialization and arises from finding of market opportunity.
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Design and performance diagnostics of building
Dušek, Erik ; Žítt, Petr (referee) ; Daněk, Petr (advisor)
The bachelor’s thesis deals with diagnostics of a reinforced concrete road bridge, evidential number 325-021 in Hostinné, Hradec Králové region. The goals are to design and partially execute a diagnostic examination. As a part of the thesis, there is a visual inspection of the bridge and survey of the existing design documentation. The conclusion is dedicated to evaluating the diagnostic results and outlining reconstruction.
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Comparison of selected parameters of tensile strength of concrete
Rozsypalová, Iva ; Žítt, Petr (referee) ; Daněk, Petr (advisor)
The thesis deals with a comparison of the selected strength tension properties of the hardened concrete and finding relationships between them. This is essentially a simple tensile strength, tensile flexural strength and tensile splitting strength. The text describe the testing procedures to determine the tensile strength of concrete. Furthermore, there are presented the results of testing on different types of concrete (plain concrete, lightweight concrete, steel-fiber concrete, polymer-fibre concrete and high strength concrete). The conclusion deals with the derivation of dependancy between concrete strengths and comparing the values obtained from the available relations with the results of the tests.
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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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