Zobrazeno 1 - 10
of 1 234
pro vyhledávání: '"R. Černy"'
Publikováno v:
Acta Polytechnica, Vol 45, Iss 1 (2005)
A comparison of the capacitance method and the microwave impulse method for the determination of moisture profiles in three typical porous building materials is presented in this paper. The basic principles of the measuring methods are given. The cal
Externí odkaz:
https://doaj.org/article/5acab399e4f54c8ea8057a33f0b77eaa
Publikováno v:
Acta Polytechnica, Vol 44, Iss 5-6 (2004)
The reference measurements of basic mechanical, thermal and hygric parameters of hardened flue gas desulfurization gypsum are carried out. Moisture diffusivity, water vapor diffusion coefficient, thermal conductivity, volumetric heat capacity and lin
Externí odkaz:
https://doaj.org/article/59f5a53616ae46b684e947b6e3aec647
Publikováno v:
Acta Polytechnica, Vol 43, Iss 2 (2003)
The moisture storage parameters of three different building materials: calcium silicate, ceramic brick and autoclaved aerated concrete, are determined in the hygroscopic range and overhygroscopic range. Measured sorption isotherms and moisture retent
Externí odkaz:
https://doaj.org/article/32ad963aac784ab08c906a2862e6dfe8
Publikováno v:
Acta Polytechnica, Vol 41, Iss 1 (2001)
The thermal conductivity of two types of high performance concrete was measured in the temperature range from 100 °C to 800 °C and in the moisture range from dry material to saturation water content. A transient measuring method based on analysis o
Externí odkaz:
https://doaj.org/article/2e59cbc90dd842b0af3cbacfe8012c6c
Publikováno v:
Acta Polytechnica, Vol 41, Iss 1 (2001)
The linear thermal expansion coefficient of two types of high performance concrete was measured in the temperature range from 20 °C to 1000 °C, and the linear hygric expansion coefficient was determined in the moisture range from dry material to sa
Externí odkaz:
https://doaj.org/article/5a08ff09f1ca492bb5f7262bd230ad2c
Publikováno v:
Acta Polytechnica, Vol 41, Iss 1 (2001)
A simple method is presented for evaluating the water-proofness quality of paints on lining materials. The method is based on measuring the integral capillarity in dependence on time, and then comparing this value to the value determined for the basi
Externí odkaz:
https://doaj.org/article/5268ac67a3034b589a782cebcf1df055
Publikováno v:
Acta Polytechnica, Vol 41, Iss 1 (2001)
The specific heat of two types of high performance concrete was measured in the temperature range from 20 °C to 1000 °C and in the moisture range from dry material to saturation water content. A nonadiabatic method was chosen instead of classical a
Externí odkaz:
https://doaj.org/article/79944807482c4fc294913928758b26e8
Publikováno v:
Acta Polytechnica, Vol 40, Iss 2 (2000)
Pulsed laser processing of InSb wafers for the application in designing high speed infrared detectors is studied both theoretically and experimentally. The recrystallization of InSb surfaces resulting in restoration of the implanted region to a singl
Externí odkaz:
https://doaj.org/article/6bfd6498a98c4451992c84290981de2e
Publikováno v:
Acta Polytechnica, Vol 40, Iss 2 (2000)
The effect of mechanical load on the thermal conductivity of building materials in the design of envelope parts of building structures is studied. A typical building material is chosen in the practical investigation of this effect, namely the cement
Externí odkaz:
https://doaj.org/article/4a87c419eef043038a00fead633224e8
Publikováno v:
Acta Polytechnica, Vol 40, Iss 2 (2000)
In designing optimum parameters of advanced crystal growth techniques, computer modeling has become an important tool owing to the fact that computer simulation is much cheaper than many experimental techniques based on the trial and error method. In
Externí odkaz:
https://doaj.org/article/6f71b427c50e4e23a6ad577a2cbc62a9