O Anton
Brno University of Technology
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Featured researches published by O Anton.
Archive | 2013
L. Hobst; O Anton; J. Vodička; J. Scucka
Fibre-concrete structures have many advantages compared to standard reinforced concrete, for example, higher strength and higher tensile strength of fibre-concrete. However, fibres are often incorrectly distributed in structure during their manufacture. Wires are often clustered, which reduces the overall homogeneity as well as the quality of fibre-concrete structures. The aim of the research team of the workers from three technical universities in the Czech Republic was to develop an objective method of control that would allow establishing the homogeneity of wire distribution in finished fibre-concrete structures.
Solid State Phenomena | 2018
Petr Cikrle; Dalibor Kocáb; Barbara Kucharczyková; O Anton
The paper deals with the in-situ determination of the modulus of elasticity on the bridge elements using ultrasonic pulse method. This non-destructive test method was chosen for the measurement because of its undisputed advantages that allow the measurement of relatively thick layers of material. For the purpose of the elastic modulus verification the direct measurement was used, in which a pair of transducers (transmitter and receiver) were placed directly opposite to each other. The results of performed in-situ measurements as well as the results of verification tests performed in the laboratory are presented in the paper. The article also discusses the issue of evaluation and interpretation of the results obtained by in-situ measurements using non-destructive test method.
Key Engineering Materials | 2018
O Anton; Tereza Komárková; Věra Heřmánková
The paper reacts to the contemporary situation in the field of determining the position of reinforcement in the reinforced concrete structures, in which the best method used so far – the Co 60 radiography – is significantly limited or even excluded due to the tightening of laws and regulations for management of radiation sources. In the article, the authors focus on the use of alternative NDT methods which, in an appropriate combination, can substitute the present radiographic method. They mention the advantages as well as technological and principle limitations of the methods of georadar and electromagnetic indicators, and on practical examples they demonstrate their usability when used separately or in a suitable combination.
Key Engineering Materials | 2018
O Anton; Tereza Komárková; Věra Heřmánková
Despite efforts to maintain quality during the construction of reinforced concrete structures, it is relatively common for improper reinforcement to be used, contradicting the project, which can lead to serious structural defects. It is then up to non-destructive testing methods to prove these defects. The key is the choice of the appropriate method and equipment, both in terms of achieving the necessary results and the possibility of their documentation. In recent years, there has been a significant progress in the development of non-destructive methods for the diagnosis of reinforcement and modernization of the technologies used so far, especially in the field of GPR and electromagnetic methods. At the same time, however, for a number of reasons, major limitations appear in the area of a conventional method of radiography. This contribution focuses on the current state of the problem, and it demonstrates the applicability of individual methods and their limitations given by their physical principles and technical solutions on a set of practical examples.
Advances in Materials Science and Engineering | 2018
Tereza Komárková; Jaromír Láník; O Anton
Steel fiber reinforced concretes are currently very popular, especially in the construction of industrial floors of warehouses and other halls with relatively large floor areas. However, it is important to mention that despite the rapid development of steel fiber reinforced concretes, the standards and regulations for their designing and testing have not been unified yet. This paper presents findings about the physicomechanical parameters of the steel fiber reinforced concretes manufactured by adding steel fibers into the truck mixer on the building site. The experimentally obtained results from the performed tests of tensile strength in bending according to various procedures are compared, and the suitability of the methods used is assessed according to these procedures.
Transactions on Transport Sciences | 2010
O Anton
One of the less frequent requirements from real world condition is to verify the correctness of the grouting of prestressed reinforcement. The experiment described in this paper aims at examining the possibilities of Co-60 radiography in solving this problem, depending on the thickness of the concrete, the form of defect, and the space configuration of the radiography of this defect.
IOP Conference Series: Materials Science and Engineering | 2018
O Anton; L Vitek; V Hermankova; Tereza Komárková; Petr Cikrle
IOP Conference Series: Materials Science and Engineering | 2018
V Hermankova; O Anton; Petr Cikrle; Tereza Komárková; Michal Stehlík
IOP Conference Series: Materials Science and Engineering | 2018
O Anton; Tereza Komárková; Jaromír Láník; V Hermankova
IOP Conference Series: Materials Science and Engineering | 2018
Petr Cikrle; O Anton; A Kinclova; Dalibor Kocáb