Zobrazeno 1 - 10
of 24
pro vyhledávání: '"Zbigniew Perkowski"'
Autor:
Zbigniew Perkowski, Zofia Szweda
Publikováno v:
Applied Sciences, Vol 12, Iss 3, p 1730 (2022)
The method of assessment of the “skin effect” for chloride ingress into concrete has been proposed, based on the inverse problem for the identification of at-surface variability of chloride diffusivity under fully saturated conditions. For this p
Externí odkaz:
https://doaj.org/article/d84a958aa9754d22bf632c729e446faf
Publikováno v:
Energies, Vol 14, Iss 5, p 1283 (2021)
One of the strategies to improve the energy performance of buildings may be the use of passive solar systems with transparent insulation. In the article, a numerical model of solar wall (SW) with transparent insulation (TI) obtained using the method
Externí odkaz:
https://doaj.org/article/f85943e500fb437ba07d2f16d0e7a47e
Autor:
Zbigniew Perkowski, Mariusz Czabak, Stefania Grzeszczyk, Daniel Frączek, Karolina Tatara, Aneta Matuszek-Chmurowska, Krystian Jurowski, Bronisław Jędraszak
Publikováno v:
Materials, Vol 13, Iss 18, p 4173 (2020)
The article describes four-point bending tests of three reinforced concrete beams with identical cross-sections, spans, and high-ductility steel reinforcement systems. Two beams were strengthened in the compressed section with a thin layer of reactiv
Externí odkaz:
https://doaj.org/article/c8b71111b2e94055866cf816357a95bc
Autor:
Zbigniew Perkowski, Karolina Tatara
Publikováno v:
Materials, Vol 13, Iss 3, p 551 (2020)
The accuracy of transmission ultrasonic tomography for the detection of brittle damage in concrete beams can be effectively supported by the graph theory and, in particular, by Dijkstra’s algorithm. It allows determining real paths of the fastest u
Externí odkaz:
https://doaj.org/article/cdadbada07cf4904bc699490614f8abd
Publikováno v:
Communications, Vol 15, Iss 4, Pp 18-20 (2013)
The paper shows possibilities of testing composite two-layer beams with flexible connectors (like bolts in steel-concrete beams and nails in wooden-concrete ones) offered by analysis of their natural frequencies. It enables an estimation of shear com
Externí odkaz:
https://doaj.org/article/f8134ffbaee14eeeb3055f7a5e0f9b0f
Autor:
Jan Kubik, Zbigniew Perkowski
Publikováno v:
Communications, Vol 4, Iss 3, Pp 9-12 (2002)
A simple model of the brittle damage evolution in concrete is presented. The damage evolution is assumed as an isotropic one and the level of damages in material is described by the scalar parameter. The physical equations for this case are formulate
Externí odkaz:
https://doaj.org/article/e9b092fbf2af42a1a903f1b69a757c0c
Publikováno v:
Civil and Environmental Engineering Reports
Civil and Environmental Engineering Reports, 2022, 18 (2), pp.760-767. ⟨10.2478/cee-2022-0070⟩
Civil and Environmental Engineering Reports, 2022, 18 (2), pp.760-767. ⟨10.2478/cee-2022-0070⟩
Large-scale construction of transport infrastructure inevitably includes the construction of new bridges. During the design process, many assumptions and simplifications are taken into account. Therefore, the verification of the structural response o
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::33d56ee4c69db6100c31d753166b0139
https://hal.science/hal-04116682/document
https://hal.science/hal-04116682/document
Publikováno v:
ce/papers. 3:265-270
This book gathers a selection of papers presented at the 5th International Scientific Conference “Environmental Challenges in Civil Engineering”, ECCE 2022, held on September 26-28, 2022, in Opole, Poland. Written by an international group of exp
Autor:
Karolina Tatara, Zbigniew Perkowski
Publikováno v:
Materials, Vol 13, Iss 3, p 551 (2020)
Materials
Materials; Volume 13; Issue 3; Pages: 551
Materials
Materials; Volume 13; Issue 3; Pages: 551
The accuracy of transmission ultrasonic tomography for the detection of brittle damage in concrete beams can be effectively supported by the graph theory and, in particular, by Dijkstra’s algorithm. It allows determining real paths of the fastest u