Petr Kuklík

• Czech Technical University in Prague

Titanium dioxide (TiO2) is used as a UV light absorber to protect wood matter from photodegradation. In this paper, interactions between wood and TiO2 coating are studied, and the efficiency of the coating is evaluated. For the experiments, two wood species were chosen: beech (Fagus sylvatica) and pine (Pinus sylvestris). Molecular and physical mod...

The article deals with durability of wood, durability of wooden structures and surface modification of wood. We are trying to eliminate the factors causing degradation of wood with the use of photocatalytic materials. Those materials are efficient UV absorbers and they are able to destroy biological aggressors also. The planar particles of titanium...

External wooden structures have own place in the building industry for ages. The problem is that wood easily degrades due to UV radiation, atmospheric conditions and biological aggressors. We are trying to eliminate degradable factors by photocatalytic materials (namely titanium oxide). Those materials are efficient UV absorbers and they are able t...

Wood is a versatile material able to be used in a wide variety of situations and applications. Wood has also very good strength to weight ratio. Problem is degradation of wood due to bad external conditions. The protection of wood takes many forms including proper design detailing. The majority are directed towards the prevention of moisture access...

The majority of timber bridges for ordinary road traffic are often made as timber-concrete composite structures. Concrete slab is something like as umbrella for timber. The reason for problems in timber-concrete bridges is nearly always poor detailing for durability and neglected maintenance. Mainly all aspects of timber protection and maintenance...

External wooden constructions have their own place in building industry from ages. The external wooden construction easily degrade due to UV radiation, atmospheric conditions and biological aggressors. We are trying to eliminate the negative impact of degradation factors by wood protection. Types of wood protection include all measures which would...

The aim of this study is to describe the design of steel angle bracket in timber joints. The design has insufficient support in the existing standards. The load-bearing capacity of these connections can be calculated in accordance with EN 1995-1-1 Eurocode 5, Chapter 8 Connections with metallic fasteners. The main drawback is that this manual only...

The paper deals with the experimental analysis focused on the determination of strain in wooden building structures using optical fibers with FBG sensors. Firstly, optical fibers were used to measure displacements of layers and surface strain of the lower surface of the ceiling panels made from mechanically jointed cross laminated timber (CLT). The...

This paper deals with behavior of timber-concrete composite structures with mechanical connection systems. The paper is focused to two different connection systems: using dowel-type fasteners and using special surface connector. Behavior of dowel-type connection system is based on modification of Johansen ́s equations valid for timber to timber con...

The paper is focused on the influence of fire resistant coatings used on OSB boards on the fire resistance of entire light timber frame wall assemblies. Two fire tests were performed in the fire test laboratory of PAVUS, a.s. in Veselí nad Lužnicí. The fire tests were performed on a load bearing wall. The wall dimensions were 3.0 (depth) x 3.0 (hei...

The aim of presented work was to verify a possible application of nanofibre polyvinyl alcohol (PVA) textiles doped with commercially available biocides for chemical preservation of wooden materials. Fungicide efficacy of biocides based on Propiconazole, Tebuconazole, IPBC was evaluated on Norway spruce samples (Picea abies Karst. L.) 25 x 25 x 4 mm...

The aim of this paper is to compare the results of evaluation of mechanical properties of timber by visual assessment, two grading machines, three devices for measuring in-situ and destructive tests. The most important result is the comparison of static and dynamic modulus of elasticity of timber, and further comparison of strength classes obtained...

Cross laminated timber (CLT) is one of the structural building systems based on the lamination of multiple layers, where each layer is oriented perpendicularly to each other. Recent requirements are placed to develop an alternative process based on the mechanical lamination of the layers, which is of particular interest to our research group at the...

The design of spatial connections in load bearing timber structures with steel angle brackets has insufficient support in the existing design standards. Therefore, research has been necessary to improve this state of the art. In the current paper an experimental study on two designs of angle brackets is presented and the results from full-scale exp...

The article introduces the non-destructive methods and devices that are used within the research project of Department of Steel and Timber Structures, CTU in Prague. Non-destructive techniques are appropriate for building-historical inspection because the historically valuable material is not damaged by investigation. Some of the laboratory and in...

The paper is focused on investigating the fire resistance of wall/floor assemblies with gypsum plasterboard and on the behaviour of timber studs in a wall assembly where timber laths are used for fixing panels. Claddings of gypsum plasterboard and gypsum fibre board are presented in the paper. One full scale fire test of a wall assembly was carried...

Cross laminated timber (CLT) has become very popular for all types of structures all around the world in last years. CLT consists of uneven number of plank layers oriented in 90° angle to each other and bonded together. Various types of adhesives and technologies are used for bonding and manufacturing of final product. In some cases, gluing is not...

The aim of the current research is to develop a new composite timber-concrete structure element as a prefabricated panel. In the Czech Republic, it is possible to see an increased interest in the constructions of timber and wood-based materials in recent years. Increased productivity is evident particularly in realization of family houses, where th...

This paper is focused on the timber construction exposed to the fire. The focal point of this study is the research of the contribution to the fire resistance of light timber frame wall and floor assemblies using boards. The correct modelling of the fire and sufficient knowledge of wood behaviour at elevated temperatures leads to improvement and sp...

The Masaryk Railway Station is the oldest still working terminal railway station in Europe. It was built in 1845 and the buildings belonged to the most splendid railway stations in that time. During the long life the part of Masaryk Station burned, it was also damaged while World Wars and finally large reconstruction started last year. The building...

Twenty real dimensions beams from the glued laminated timber were tested in our previously works. Twenty advanced FE models were created precisely according to tested beams. Input files for FE models are lengths of segments and local moduli of elasticity. The segment is part of lamella between two finger joints. Each local modulus of elasticity was...

The present paper is concerned with the formulation of advanced FEM based models of beams made from glued timber segments. These models account for variable elastic moduli in individual segments and their analysis is based on the application of LHS method. All results from probabilistic calculations are compared with experimental measurements condu...

The aim of the current research is to develop a new composite timber-concrete structure element as a prefabricated panel. In the Czech Republic, it is possible to see an increased interest in the constructions of timber and wood-based materials in recent years. Increased productivity is evident particularly in realization of family houses, where th...

The present paper is concerned with the formulation of advanced FEM based models of beams made from glued timber segments. These models account for variable elastic moduli in individual segments and their analysis is based on the application of LHS method. All results from probabilistic calculations are compared with experimental measurements condu...

Article is focused on the optimization of thickness and materials of high performance lamellas in beams from the glued laminated timber. Destructive bending tests of thirty beams with the different types of reinforcements are used as base of this work. We have two types of materials and six different lamellas thicknesses in tests. FEM models are ma...

This paper is concerned with investigating the use of non-destructive testing methods for structural timber grading and for determining the properties of structural timber elements. The investigation described dealt with the ultrasonic method and the method of longitudinal and transverse vibrations. The usability of these methods was verified using...

New test standards for timber structures have been developed as part of the international standardization efforts. These test standards include test procedures to determine the physical and mechanical properties of timber and wood-based products as well as connections made with special mechanical fasteners. These activities are aimed at producing c...

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Vyd. 2. 400 výt.

Vyd. 1. 100 výt.

Vyd. 3., přeprac. 500 výt.

Vyd. 2. 500 výt.

Vyd. 1. Na obálce nad názvem: České vysoké učení technické v Praze, Fakulta stavební 500 výt.

Vyd. 1.

V tiráži autoři: Kuklík P. ... et al. 400 výt. Pro účastníky semináře Navrhování konstrukcí na účinky požáru podle evropských norem

"VZ MSM 6840770001 Spolehlivost, optimalizace a trvanlivost stavebních konstrukcí"--Rub tit. s. 250 výt.

Vyd. 1. Na obálce pod názvem: ČVUT v Praze, Fakulta stavební 200 výt.

"Vzorové příklady projektu Další vzdělávání pedagogů v oblasti navrhování stavebních konstrukcí podle evropských norem ..."--Tit. s. 110 výt.

V tiráži autoři Kuklík P., Kuklíková A. "Textové materiály projektu Další vzdělávání pedagogů v oblasti navrhování stavebních konstrukcí podle evropských norem..."--Tit. s. 110 výt.

1. vyd Bibliogr. s. 186-188

2. čes. vyd. Dotisk 2009 [196 s.] Překlad z němčiny

1. vyd.