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Optimalizace využití vratné vody na úpravně vody / Optimizing the use of sludge water on the water treatment plantHanušová, Veronika January 2018 (has links)
The first part of this diploma thesis deals with knowledge of chosen technological devices in water treatment plants gathered from Czech and foreign literature. The thesis continues by linking the information gathered to the water treatment plant in Švařec for which a plan to increase the sludge water volume reuse was researched and formed. Furthermore, financial assessment of this plan was completed.
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Odolnost asfaltových pojiv proti stárnutí / Resistance of bituminous binder to ageingRous, Vojtěch January 2013 (has links)
Asphalt binder ageing and experiences with various ageing methods from abroad are described in this thesis. The practical part deals with the RTFOT aging and with the influence of the duration of this test. The comparison of test results is conducted before and after the aging by values of needle penetration, elastic recovery, softening point and resilience tests are evaluated and compared.
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Návrh řídicího algoritmu pro elektromechanický aktuátor s výrazným suchým třením / Design of controller for electromechanical actuator with significant dry frictionVeselý, Antonín January 2015 (has links)
This work deals with identification of systems with high dry friction and/or return spring. Identified models are optimised by Parameter Estimation toolbox. Because friction and return spring have negative influence in control systems, models are used as compensators in control loop. Also effect of parameters variation is investigated in this paper.
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Využití rychle reagujícího SBS polymeru při výrobě asfaltových směsí / Usage of fast-reacting SBS polymer in the production of asphalt mixturesDohnálek, Jakub January 2022 (has links)
The subject of this diploma thesis is a research of bituminous binder modification by fast react-ing polymer SBS. The theoretical part covers an introduction to bituminous binders, their pro-duction, chemical and physical-mechanical properties. The identification of bituminous binders and their use in bituminous mixtures is briefly described. To conclude, current modification methods are described in detail and important modifiers are introduced. In the practical part, three applied tests (softening point, elastic recovery and penetration) are described in detail. The bituminous binders tested (20/30, 30/45, 70/100, PMB 25/55-55 and PMB 45/80-50) and the fast-reacting polymer SBS are introduced. Samples with two weight percentages of SBS, 7,5% and 10%, are produced. Two mixing times, 60 seconds and 600 seconds were used to mix the bituminous binder and SBS. In conclusion, the results are evaluated and commented. Further research suggestions regarding this field are recommended.
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Vliv technologických parametrů na elektrochemické vlastnosti záporné elektrody lithium-iontového akumulátoru / Infuence of Technological Parameters on Electrochemical Properties of Negative Electrode in Lithium-ion CellKaňa, Michal January 2018 (has links)
This diploma thesis deals with lithium-ion batteries. It is focused on negative electrode on grafit based. The goal of this thesis is to show the problematics of lithium-ion batteries together with possibilities for improvement of their basic parametres as capacity and current elektricity loadability. The first part is focused on the description of functionality of lithiumion battery. The second part is practical and it is focused on production of negative electrodes from natural graphite 280H which has different thickness and compression pressure. The third part describes preparation of negative electrodes from natural graphite 280H and also includes results of measurement. In the last part are different types of negative electrodes from natural graphite 280H compared and evaluated including the determination of conclusions. This comparison and evaluation based on obtained data.
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Relaxace smykového napětí asfaltových pojiv v DSR / Shear stress relaxation of bituminous binders in DSRMusil, Vladimír January 2015 (has links)
The thesis describes the relaxation properties of bituminous binders determined in dynamic shear rheometer (DSR). Paving bitumen, polymer modified bitumen (PMB) and crumb rubber modified bitumen (CRmB) were chosen for comparison. In order to describe the effects of ageing on asphalt binders relaxation properties, the laboratory simulation of ageing using RTFOT and 3xRTFOT method was performed. For each binder were simultaneously conducted tests of needle penetration, softening point and elastic recovery. Selected bitumens were used for the production of asphalt mixtures. The low-temperature properties tests (TSRST) were performed for these mixtures, when the results were compared to the relaxation properties of binders determined in the DSR.
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Využití přísady vhodné pro dodatečnou modifikaci asfaltové směsi / Use of an additive suitable for additional modification of the asphalt mixtureMachová, Sára January 2022 (has links)
This thesis deals with the modification of asphalt binder 50/70 with fast reacting SBS. This is a relatively new additive that should be able to improve the binder properties during mixing of the asphalt mix at the plant. In the theoretical part, the issue of asphalt-mixing plant and polymer modification additives is presented. Furthermore, the test methods used such as needle penetration, softening point, determination of the elastic recovery, DSR and MSCR are described. Several modified binder samples were developed for the tests, in which mixing temperature, mixing time and SBS content were combined. The results of each test were compared and evaluated at the end of the thesis.
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Možnosti mísení pojiv typu PMB RC s pojivem z R-materiálu / Possibility of mixing PMB RC type binders with reclaimed binder from RAPTrnka, Lukáš Unknown Date (has links)
The diploma thesis deals with the possibility of mixing binders of the PMB RC type with a binder made of reclaimed ashalt. lists the types of asphalt binders, its production and modification are in the teoretical part. There is explained the principle of rejuvenators function, types of rejuvenators. The procedures for performing tests on asphalt binders: recovery of asphalt binder, needle penetration, softening point (ring and ball method), reversible ductility, breaking point (according to Fraass) and DSR. Individual tests are evaluated and asphalt mixtures are compared in the practical part of asphalt binder. The diploma thesis deals with the possibility of mixing binders of the PMB RC type with a binder made of reclaimed ashalt. lists the types of asphalt binders, its production and modification are in the teoretical part. There is explained the principle of rejuvenators function, types of rejuvenators. The procedures for performing tests on asphalt binders: recovery of asphalt binder, needle penetration, softening point (ring and ball method), reversible ductility, breaking point (according to Fraass) and DSR. Individual tests are evaluated and asphalt mixtures are compared in the practical part of asphalt binder.
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Hodnocení vlastností pojiv typu PMB obsahujících pojivo z R-materiálu / Evaluation of properties of PMB containing binder from RAPMěšťanová, Petra Unknown Date (has links)
Subject of this diploma thesis is to describe the effect of adding different amount of aged binder recovered from RAP on the change of properties of polymer modified bitumen. The RAP containing unmodified bitumen and the RAP where we can expect bitumen modification are used to recover binder. The binder obtained from RAP is dosed into the virgin binder in amount of 15 %, 30 % and 50 %. The methods of recycling of flexible pavements, extraction and regeneration of asphalt binders, rejuvenating of their properties and methods of empirical and functional laboratory tests are described in the theoretical part. The practical part deals with evaluating and comparison of the results mixed binders properties.
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