Durability Properties of High Performance Concrete Containing Finely-Ground Ceramics
Author: ČERNÝ Robert, KEPPERT Martin, KULOVANÁ Tereza, ONDRÁČEK Michal, ROVNANÍKOVÁ Pavla, SEDLMAJER Martin, VEJMELKOVÁ Eva
Durability properties of high performance concrete containing finely-ground ceramics as cement replacement are studied in this paper. The measured data provide information on basic physical properties of concretes after a 28-days’ curing period, hygric properties, frost resistance and chemical resistance. The measured parameters are compared with reference high performance concrete without finely-ground ceramics.
The Effect of High Temperature on Non-Traditional Fibre-Reinforced Concretes
Author: PEŠKOVÁ Šárka, PROCHÁZKA Petr
Non-traditional loads of underground structures, such as sudden changes of temperature due to fires can destroy the structure and therefore it is very important to select appropriate materials for implementation. This study deals with the distribution of temperature inside the concrete slab (test cube) and describes the various mechanical properties of fibre and concrete for possible use in practice. The load caused by sudden changes of temperature leads to a superheated vapour formed in the pores and consequently to subsequent damage to the surface and thereby reduces the bearing capacity of the material.
The Effect of Infilling Material on Thermal Insulating Properties of Hollow Clay
Author: ČERNÝ Robert, JERMAN Miloš, KOČÍ Václav, MADĚRA Jiří, TRNÍK Anton
For determining the coefficient of thermal conductivity of perforated bricks with various infilling materials, a combined experimental numerical method was applied. It eliminates the shortcomings of experimental measuring. The thermal conductivity coefficient was determined using the Bock experiment, which ensues from the determination of temperatures and heat fluxes on opposite sides of the sample.
The Effect of Visitors’ Numbers on the Interior Climate in the Znojmo Rotunda
Author: HNILICA Ondřej, PLÁŠEK Josef
The article deals with the structure of a Romanesque rotunda in Znojmo, which accommodates an interior fresco decoration, which is historically very valuable. There are still many years of non-published measurements by which visitors inside the structure have been controlled.
Using Alternative Bank Stabilization Measures
Author: ŠLEZINGR Miloslav
The article deals with the protection of the shores of reservoirs. For this purpose, breakwaters are designed. Breakwaters actively protect the shores damaged with abrasion.
Management of Risks in the Decision Making Process Involved in the Technology
Author: KORYTÁROVÁ Jana, WITALA Lukáš
The article deals with the description of the reinforced concrete framework construction technology, it analyses the strengths and weaknesses of the monolithic and prefabrication technology of construction. In addition, the text describes the risks arising from building with the description of their characteristics and evaluation of their relevance.
Optimization of Processes and Life Cycle Costs of a Work with Facility Management Support
Author: HANÁKOVÁ Zdenka, TICHÁ Alena
The article deals with the problems of a newly constituted managerial discipline – facility management. It comprises a set of methods and procedures which allow the optimization of ancillary activities necessary for the performance of the principal activity of both entrepreneurial and non-entrepreneurial entities in using buildings mainly during the operational phase of their life cycle. The article mentions the necessity of implementing facility management not only in buildings, but also other engineering structures.
