Ústav stavitelství II

doc. Ing. Daniela Bošová, Ph.D., Ing. arch. Dominika Výšková

15124 Ústav stavitelství II

Neodborné zásahy do konstrukce lidových staveb mohou vést ke ztrátě autentických konstrukcí tradičního stavitelství, ztrátě památkově hodnotného architektonického výrazu objektu, ale také ke zhoršení vnitřního mikroklimatu objektu, které může ohrožovat zdraví jeho obyvatel. Příspěvek se zaměřuje na rešerši literatury týkající se dané problematiky a hledání východisek pro další směřování výzkumu. Cílem práce je rozpoznání a popsání rizik, která hrozí při nekoncepčních nebo dílčích stavebních úpravách staveb lidové architektury a hledání nástrojů pro předcházení vzniku problematických stavebních úprav.

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Ing. Radka Navrátilová, Ph.D.

15124 Ústav stavitelství II

Colored concrete is widely used in contemporary architecture due to its aesthetic potential. Adding a color pigment to the concrete mix opens up for architects other possibilities for work with concrete. They are no longer limited by its natural gray color. Choosing the right type of pigment is essential for quality and long-term satisfaction with the final work, while it is necessary to be aware of certain limits resulting from the natural behavior and nature of concrete. The article characterizes an overview of pigments suitable for coloring concrete mixtures and demonstrates the change in color saturation after exposure to weathering over time. The measurement was performed on experimental concrete samples stained with yellow, red and green pigments

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doc. Ing. Daniela Bošová, Ph.D., doc. Ing. Lenka Prokopová, Ph.D.

15124 Ústav stavitelství II

Characterizing the surface of a material or product is important in some industries because roughness control offers the opportunity for further optimization. It is necessary to measure roughness, eg in medical technology, the automotive industry, electronics and semiconductors. It is also necessary to determine the roughness in construction, such as glass or wood, concrete or plaster. Currently, there are a number of conventional 3D measuring systems, which for the most part perform contact profile measurements. However, contact measurement may damage the material being measured or may not be able to provide correct data for some types of materials or surfaces. Among other things, the operation of these devices is difficult and very time consuming, and therefore expensive. The article presents non-contact roughness measurement on selected building materials using a Lext OLS3000 confocal scanning microscope. Measurements on this unique device can be performed in real time, the measurement is fully automatic, the resolution is in nanometers. Said microscope provides the possibility to measure the roughness in two ways. The article describes and compares two measurement methods. The accuracy of the measurement and the factors that affect the measurement itself are also described.

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Ing. Radka Navrátilová, Ph.D.

15124 Ústav stavitelství II

This article is focused on changes in the properties of colored concrete due to frost. In contrast to conventional concrete structures, fair-faced concrete is exposed to external conditions and is therefore also prone to degradation of its surface. The durability of the surface layers is mainly reflected in the color saturation and resistance to mechanical damage. Therefore, the paper focuses on measuring the change in color and strength characteristics after 75 cycles of frost resistance. The measurement was performed on concrete samples colored with yellow, red and green powdered metal oxide-based pigments. Based on the results, we can concluded the frost resistance of colored concrete depends primarily on the type of pigment used.

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doc. Ing. Daniela Bošová, Ph.D., doc. Ing. Lenka Prokopová, Ph.D.

15124 Ústav stavitelství II

The paper discusses the use of a modern 3D confocal scanning microscope Lext OLS3000 for the purpose of direct determination of porosity and pore distribution in the structure of silicate composites. The measurement results are determined on the example of a comparison of two methods according to ČSN EN 480-11 and direct optical determination according to the prepared methodology of the LEXT microscope software.

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Veronika Sojková

15124 Ústav stavitelství II

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doc. Ing. Lenka Prokopová, Ph.D.

15124 Ústav stavitelství II

The paper presents the research of thin layer insulating material on technical distributions. This material can be a new possibility for the design concept of pipes in buildings. Technical pipelines are an integral part of the building, the usual solutio n is to "hide " these elements in the ceiling or shaft. However, there is a number of important realizations in which the architects were able to deal with visible technical pipelines, whether it is the Center Georges Pompidou,where the authors followed th e path of com plete and organized visibility of technical distributions or, conversely, there are implementations that don't cover many pipelines but at the same time using simple effects in the form of coloring them they try to make them "invisible". One s uch example f or all is the Tate modern. In all ingenious concepts of pipes in space, colors play a major role. Nowadays, it is not possible to meet the legislative requirements for the thermal insulation of pipes with conventional coatings. At the same ti me, common te chnical thermal insulation materia ls do not provide an excessive possibility of the artistic interconnection of space with technical distributions. We have therefore focused on a thin layer insulating material that meets the above requirements This paper presents, on specific examples, how well the interconnection of colors, technical elements, building architecture and public space works and points out the importance of interdisciplinary interconnection of individual professions that shape bu ildings

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doc. Ing. Daniela Bošová, Ph.D., doc. Ing. Lenka Prokopová, Ph.D.

15124 Ústav stavitelství II

The article presents the degradation of selected textile fibers. In addition to the degradation of the fibers themselves stored in an aggressive environment, the degradation of these fibers applied in fiber cement boards is also monitored. Fiber failure at the fiber-matrix interface was also monitored.

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Ing. Zuzana Vyoralová, Ph.D., Ing. arch. Jaroslava Rolínková

15124 Ústav stavitelství II

Návrh hospodaření s vodou, včetně materiálových opatření a stavebních úprav, v budově, přilehlém pozemku, urbanizovaném území nebo krajině tak, aby splňovaly současné požadavky na vodní management. Zvláštní důraz bude kladen na Zelenomodrou infrastrukturu. Návrh by měl odpovídat zásadám udržitelného vývoje, včetně řešení budovy podle zásad využití prvků pasivní solární energie v kombinaci s obnovitelnými zdroji energie. S důrazem na vzájemnou provázanost všech technologických celků s předpokládanou energetickou úsporou.

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Ing. Zuzana Vyoralová, Ph.D., Ing. arch. Jaroslava Rolínková

15124 Ústav stavitelství II

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