28 research outputs found

    Anti-discrimination legislation in practice of social work

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    Bachelor's thesis "Anti-discrimination legislation in practice of social work" is concerned with the describing of the impact of anti-discrimination legislation in the context of antiopressive approach to social work. Stresses the importance of paradigm of social work (social work as a reform of the social environment) and its potential impact not only on individuals, but on possible reform and upgrading the quality of society's wealth. Anti-discrimination legislation can finally give people, victims of discrimination, and the social workers, who work with victims, the reserve and defence tool. In the meantime it is missing in our legislation.Bakalářská práce - Antidiskriminační legislativa v praxi sociální práce - se zabývá popisem vlivu antidiskriminační legislativy v kontextu antiopresivního přístupu v sociální práci. Zdůrazňuje význam paradigmatu sociální práce (sociální práce jako reforma společenského prostředí) a jeho možný vliv nejen na jednotlivce, ale na možnou reformu a zkvalitnění bytí celé společnosti. Antidiskriminační legislativa totiž může konečně dát lidem, obětem diskriminace, ale také sociálním pracovníkům, kteří s obětmi pracují do ruky nástroj, díky kterému bude možné domoci se náhrady, obrany apod. To v naší legislativě zatím chybí.Department of Social WorkKatedra sociální práceFilozofická fakultaFaculty of Art

    Evaluation of Selected Physicomechanical Properties of SFRC according to Different Standards

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    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

    Influence of the gripping fixture on the modified compact tension test results: evaluation of the experiments on cylindrical concrete speciments

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    The modified compact tension test (MCT) might become in the future a stable test configuration for the evaluation of fracture-mechanics parameters or also for description of fatigue behavior of composites materials such as concrete. Core drilling is used for sampling of existing structures. These samples have cylindrical shape with the selected thickness to avoid the stress concentration. This contribution focuses on the evaluation of the fracture behavior during static and quasi static tests. Static tests are performed on standard specimen with diameter 150 mm and length 300 mm. The quasi-static tests are performed using two different gripping fixtures. The results for quasi-static tests are represented as L-COD diagrams (i.e. load vs. crack opening displacement) measured on the loading axis. The comparison of results and discussion of advantages and disadvantages are introduced

    Experimental assessment of steel fibre reinforced concretes with different concentrations of fibres

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    At present, steel fiber reinforced concrete can be classified as a composite material commonly used for load-bearing building structures. Adding steel fibers to fresh mixture improves its mechanical properties in comparison to plain concrete. The problem is, however, the production technology, which has not been standardized by regulations so far, and thus, proposals for the amount of steel fibers added to the mixture are still based on the long-term experience and performed tests. The paper describes an experiment focused on the determination and assessment of mechanical properties of steel fiber reinforced concretes with high concentrations of fibers. To better understand the behavior of test specimens during the three-point bending test, the acoustic emission method was used, which is able to capture active defects

    Experimental Campaign to Verify the Suitability of Ultrasound Testing Method for Steel Fiber Reinforced Concrete Fortification Structures

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    Fortification structures, both military and civilian, are designed to resist a blast explosion to some extent. Their technical condition after a blast load must be assessed in a fast and reliable way to enable the users' decision about the future use of the structure. Preferably, for the assessment of the protective structure, the non-destructive testing method should be used. To assess the suitability of ultrasound testing method for fortification structures built from steel fiber reinforced concrete, an investigation in a laboratory and in situ was conducted, together with numerical simulation and statistical evaluation. The numerical simulation of the blast load of a steel fiber reinforced concrete slab was conducted using multiphysics simulation software with the aim to verify basic parameters of the field experiment. During the field tests, several slabs were loaded by plastic explosive and changes in the structure of the slabs, before and after the blast load, were examined using the ultrasound pass-through method. After the field tests, the slabs were subjected to a destructive laboratory test to determine their residual strength. Subsequently, the data sets obtained from the measurements were tested using functional data analysis. The results from the ultrasound pulse method show that specimens after a dynamic blast load can in some cases increase the strength of their cement matrix
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