Browsing by Author "Kocáb, Dalibor"
Now showing items 1-20 of 60
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The Acoustic Emission Parameters Obtained during Three-point Bending Test on Thermal-stressed Concrete Specimens
Topolář, Libor; Kucharczyková, Barbara; Kocáb, Dalibor; Pazdera, Luboš (Elsevier, 2017-06-02)Fire response of concrete structural members depends on thermal, mechanical, and deformation properties of concrete. These properties vary significantly with temperature and also depend on the composition and characteristics ... -
Aspekty navrhování staveb zaměřené na životnost
Bučilová, IvetaDiplomová práce pojednává o životnosti stavebních konstrukcí z hlediska vybraných příčin poruch, které jsou uvedeny a rozebrány v normě ISO 16204 - „Trvanlivost - Návrh životnosti betonových konstrukcí". Vybranými příčinami ... -
Characteristic Curve and Its Use in Determining the Compressive Strength of Concrete by the Rebound Hammer Test
Kocáb, Dalibor; Misák, Petr; Cikrle, Petr (MDPI, 2019-08-23)During the construction of concrete structures, it is often useful to know compressive strength at an early age. This is an amount of strength required for the safe removal of formwork, also known as stripping strength. ... -
Comparison of Measurements Methods Intended to Determination of the Shrinkage Development in Polymer Cement Mortars
Kucharczyková, Barbara; Karel, Ondřej; Daněk, Petr; Kocáb, Dalibor; Pőssl, Petr (Elsevier, 2017-07-20)The paper deals with the experimental determination of the shrinkage progress of the polymer cement (PCC) mortars. The main motivation of performed measurements was to compare the results obtained from two different ... -
Comprehensive Testing Techniques for the Measurement of Shrinkage and Structural Changes of Fine-Grained Cement-Based Composites during Ageing
Kucharczyková, Barbara; Topolář, Libor; Daněk, Petr; Kocáb, Dalibor; Misák, Petr (Hindawi Publishing Corporation, 2017-01-15)The paper deals with an experimental analysis focusing on the utilization of a specific measurement technique for determining the development of shrinkage and for monitoring structural changes in fine-grained cement-based ... -
Cost-Effective High-Performance Concrete: Experimental Analysis on Shrinkage
Kucharczyková, Barbara; Kocáb, Dalibor; Daněk, Petr; Terzijski, Ivailo (MDPI, 2019-08-26)This paper focuses on the experimental determination of the shrinkage process in Self-Compacting High-Performance Concrete (SCC HPC) exposed to dry air and autogenous conditions. Special molds with dimensions of 100 mm × ... -
Destructive and non-destructive assessment of the frost resistance of concrete with different aggregate
Kocáb, Dalibor; Kucharczyková, Barbara; Daněk, Petr; Vymazal, Tomáš; Hanuš, Petr; Halamová, Romana (IOP Publishing, 2018-07-12)The paper focuses on determining the frost resistance of concrete using selected destructive and non-destructive test methods. The experiment was performed with four specially made concretes, which differed only in the ... -
Determination of the static modulus of elasticity of cement mortars in the early stage of ageing
Kocáb, Dalibor; Halamová, Romana; Kucharczyková, Barbara (EDP Sciences, 2020-03-05)The paper deals with the influence of the composition of cementitious materials on the development of their modulus of elasticity in the early stage of ageing. The primary goal of the paper is to determine the static modulus ... -
Determining reinforcement coverage using an electromagnetic rebar detector
Cikrle, Petr; Anton, Ondřej; Kinclová, Anežka; Kocáb, Dalibor (IOP Publishing, 2018-07-16)Correct reinforcement is an essential part of constructing reinforced concrete structures. Errors in positioning, diameter, or coverage may result in defects, which is why it is necessary to make sure the reinforcement is ... -
Development of the Elastic Modulus of Concrete under Different Curing Conditions
Kocáb, Dalibor; Kucharczyková, Barbara; Misák, Petr; Žítt, Petr; Ledvoňová, Monika (Elsevier, 2017-07-20)The modulus of elasticity is a property of concrete, which is known for its high variability of values. A high enough value of the modulus of elasticity is a critical requirement in complicated concrete structures and in ... -
Diagnostika stavebních konstrukcí při hodnocení poruch a vad
Stehlík, PetrTato bakalářská práce se zabývá způsoby měření poruch a vad v rámci stavebně technického průzkumu a jejich hodnocením. Součástí práce je rozbor právní problematiky stavebně technických průzkumů a rozbor zásad při jeho ... -
Early-age behaviour of cement-based self-leveling flooring compounds
Kucharczyková, Barbara; Kocáb, Dalibor (IOP Publishing, 2018-07-16)The article deals with the cement-based flooring compounds, especially with the behaviour during the early solidification process. A touch-less laser sensor and a cone-shaped mould were used for the measurement of the ... -
Evaluation of Shrinkage, Mass Changes and Fracture Properties of Fine-aggregate Cement-based Composites during Ageing
Kucharczyková, Barbara; Šimonová, Hana; Keršner, Zbyněk; Daněk, Petr; Kocáb, Dalibor; Misák, Petr; Pőssl, Petr (Elsevier, 2017-06-02)The paper deals with the experimental determination of relative length changes development during cement based composite ageing. Special moulds with the dimensions 100 × 60 × 1000 mm were used for the measurements. These ... -
Experimental Analysis of the Development of Elastic Properties and Strength under Different Ambient Temperature During the Hardening of Concrete
Kocáb, Dalibor; Daněk, Petr; Misák, Petr; Topolář, Libor; Pőssl, Petr (Elsevier, 2017-07-20)This paper focuses on the experimental assessment of the degree to which continued exposure to low ambient temperatures influences the concrete modulus of elasticity and compressive strength. The elastic modulus is not a ... -
Experimental Analysis on Shrinkage and Swelling in Ordinary Concrete
Kucharczyková, Barbara; Daněk, Petr; Kocáb, Dalibor; Misák, Petr (Hindawi Publishing Corporation, 2017-05-22)The paper deals with the experimental determination of shrinkage development during concrete ageing. Three concrete mixtures were made. They differed in the amount of cement in the fresh mixture, 300, 350, and 400kg/m3. ... -
Experimental assessment of the influence of multiple cyclic loading on the dynamic modulus of elasticity of concrete
Misák, Petr; Kocáb, Dalibor; Daněk, Petr; Kucharczyková, Barbara; Topolář, Libor (EDP Sciences – Web of Conferences, 2017-05-24)The goal of the experiment was to determine the influence that cyclic loading has on concrete dynamic modulus of elasticity and compressive strength. Each test specimen was subjected to cyclic loading with the loading force ... -
Experimental determination of the initial compressive strength of concrete using a rebound test hammer
Cikrle, Petr; Kocáb, Dalibor; Misák, Petr (IOP Publishing, 2018-07-16)This paper deals with rebound hammer testing of concrete in the early stage of ageing. Six types of concrete were produced for the purpose of the presented experiment and differed in the water/cement ratio and were otherwise ... -
Experimentální ověření modulu pružnosti v tlaku jemnozrnných kompozitů na bázi silikátových pojiv
Hoduláková, MichaelaStavební materiály se od počátku svého vzniku neustále vyvíjí a také se stále hledají nové možnosti pro poznávání a zdokonalování jejich vlastností (zejména zlepšení mechanických a deformačních charakteristik). Tato diplomová ... -
Experimentální ověření vlivu typu vláken na chování vláknobetonů
Hanuš, PetrDiplomová práce se zabývá porovnáním různých vlastností vláknobetonů v závislosti na typu vláken. Hlavní sledovanou charakteristikou je pevnost v tahu ohybem, zkoušená na trámcích průřezu 150x150 mm a délce 600 mm. Pro ... -
Experimentální stanovení faktorů ovlivňujících statický modul pružnosti betonu s využitím nedestruktivních zkušebních metod
Kocáb, DaliborDisertační práce se zabývá jednou z nejdůležitějších charakteristik ztvrdlého betonu, kterou je modul pružnosti. Klade si za cíl postihnout a popsat důležité faktory, které výslednou hodnotu modulu pružnosti betonu ovlivňují, ...