• Refine Query
  • Source
  • Publication year
  • to
  • Language
  • 144
  • 12
  • Tagged with
  • 156
  • 87
  • 79
  • 72
  • 67
  • 65
  • 48
  • 36
  • 31
  • 28
  • 27
  • 26
  • 25
  • 24
  • 22
  • About
  • The Global ETD Search service is a free service for researchers to find electronic theses and dissertations. This service is provided by the Networked Digital Library of Theses and Dissertations.
    Our metadata is collected from universities around the world. If you manage a university/consortium/country archive and want to be added, details can be found on the NDLTD website.
141

Stavební průzkum a hodnocení stavu konstrukce / Building survey and evaluating the state construction

Nguyen, Martin January 2017 (has links)
This diploma thesis deal with the building survey and evaluating the state of existing constructions. In theoretical part are described the types of civil engineering surveys and diagnostic methods for conducting a survey of reinforced concrete structures. The practical part deal with describes the structural and technical survey of the production hall in the industrial area Fatra Napajedla, evaluating the strength of concrete on the existing structure through donations cores and verification of compliance with the reinforcement according to project documentation. The last part is focused on a static assessment of selected supporting elements of the structure.
142

Experimentální ověření modulu pružnosti v tlaku jemnozrnných kompozitů na bázi silikátových pojiv / The experimental verification of modulus of elasticity of fine grained composites based on silicate binders

Hoduláková, Michaela January 2017 (has links)
Since their inception, building materials are constantly improving. New ways to explore and improve the material's properties are constantly investigated (especially to improve the mechanical and deformation characteristics of the materials). This thesis is focused on identifying and comparing values of the modulus of elasticity of fine-grained composites. These features are compared with respect to water cement ratio, ageing and compressive strength of the investigated materials. Afterwards, the values of the modulus of elasticity are studied in the relation to the tested materials.
143

Experimentální zkoušení modulu pružnosti podkladních vrstev vozovek / Experimental testing of elasticity modulus for base layers of pavements

Kotas, Vojtěch January 2017 (has links)
The thesis is focused on experimental testing of resilient modulus Mr with triaxial test of chosen unbounded and bounded mixtures used in the sub-base layer of pavement. The reason of testing is to compare results with TP 170 – pavement construction guide containing commonly used values of resilient modulus Mr. Thesis should check if those values are correct and real. For classification of chosen materials there are used another tests like grain size distribution, compaction, California bearing ratio CBR for unbounded mixtures and compressive strength for cement-bounded mixtures.
144

Využití těženého kameniva do podkladních vrstev vozovek / The usage of the quarried aggregates to base layers of pavements

Borkesz, Michael January 2017 (has links)
The work deals with the possibilities of using fine crushed and quarried aggregate to base layers of roads. The introduction of the theoretical part explains the origin of this type of aggregate. There are also described the tests, which were used to verify the attributes and features of these mixtures and their use in cemented base layers of roads. In a brief way, the work also deals with foreign research and the possibilities that arise from it. In the practical part is then described the process of mixture preparing and laboratory tests carried out on them, the production of test specimens, load tests of these specimens and interpretation of the results. The conclusion summarizes the findings. Here are also discussed ways to apply them in practice.
145

Hodnocení stavu konstrukčního dřeva s užitím technologie odporového vrtání / Evaluation of the condition of structural timber using resistance drilling technology

Dziadková, Aneta January 2022 (has links)
The aim of this master thesis is to summarize the overview about characteristics and properties of timber and about diagnostic methods used for timber structures prospecting. Experimental part is focused on comparison of drill resistance measurement using Rinntech RESISTOGRAPH for samples at different moisture levels. This paper also includes building survey of roof truss of Litomyšl‘s library and structural report of rafter.
146

Diagnostický průzkum a hodnocení mostní konstrukce / Diagnostics and assessment of the bridge structure

Fadrný, Michal January 2022 (has links)
This diploma thesis targets on diagnostics and assessment of bridge structure Most Kaštanová přes Svitavu, reg. number 380-001. Concrete material characteristics have been assessed in laboratory, after visual inspection, diagnostical testing and sample core drilling were made. Findings from laboratory tests are summarized in the conclusion of the thesis. It focuses on an evaluation of current bridge condition and presents various options that will help polong lifetime of the bridge.
147

Stavební průzkum a diagnostika železobetonové konstrukce / Survey and Diagnostics of Reinforced Concrete Structure

Richterová, Dominika January 2022 (has links)
The main theme of this diploma thesis is a building survey and diagnostics of a reinforced concrete construction. In the first, theoretical part the focus lies on a description of each method for testing constructions and their evaluation. The second, practical part focuses mainly on finding of material characteristics and reinforcement of particular parts of the construction. On basis of obtained information, the final part of this paper focuses on static assessment of chosen parts of the construction.
148

Využití recyklátů z vozovek do pozemních komunikací / The utilization of the pavement waste materials to roads

Furdaničová, Alice Unknown Date (has links)
The diploma thesis deals with the use of recycled asphalt with aggregate in a hydraulically bound mixtures. The mixture is determined in the base or sub-base course of the pavement. The theoretical part of the diploma thesis describes the base course of the pavement, the production of recyclates from construction demolition waste, the acquisition and processing of recycled asphalt, the road reuse and recycling. The thesis is enriched by a contribution from the implementation of recycled asphalt laying into the base course of the communication company SKANSKA a.s. and ČNES a.s. The next chapter describes detailed experiences with recycling abroad. The thesis also contains a description of laboratory tests, which are important for evaluating the properties of mixtures with recycled asphalt. The practical part verifies the suitability of the mixture of recycled asphalt and aggregate for the road surface by testing the transverse tensile strength, compressive strength and frost and water resistance. The mixtures used are found to be suitable for pavement base course.
149

Vlastnosti betonů s přídavkem plazmatem upravených polypropylenových vláken / Properties of concrete with the addition of plasma modified polypropylene fibers

Vorel, Pavel January 2013 (has links)
Master‘s thesis focuses on concrete combined with polypropylen fibres produced commercially, fibres without surface modifications and fibres modificated by plasma. Most important topic of the thesis is experimental verification of influence of plasma modificated fibres on attributes of fresh concrete and physical-mechanical attributes of solidified concrete. Based on the results of the tests perfomed on examin units compares results and anylyses applicability of different fibre surface modifications.
150

Dvoufázový systém stabilizace podloží vozovek / Double-stage system of subgrade stabilization

Švarcová, Monika January 2019 (has links)
This diploma thesis is focused on the properties of unsuitable and conditionally unsuitable fine-grained soils after a one-stage or two-stage treatment by using a binder. The theoretical part occupies with problematical properties of the fine grained soils in a subgrade and a possible technology of the change of these properties. The laboratory testing of treated soils is described and a practical technology of the one stage and two-stage stabilization. In the practical part the fine grained soils are treated by one-stage or two-stage stabilization. For the one stage stabilization the cement is used, for the two-stage stabilization the properties of the soil are improved by lime and then the soil is stabilized by cement. The treated soils are laboratory tested, the initial bearing index IBI, California bearing ratio CBR, unconfined compressive strength and frost susceptibility is tested. Based on the results of the laboratory tests the benefit of the two-stage stabilization is measured.

Page generated in 0.0476 seconds