Zobrazeno 1 - 10
of 109
pro vyhledávání: '"Radim Čajka"'
Experimental Tests of Fiber-Reinforced Concrete Slabs and Comparison of Deformations Using 3D Graphs
Autor:
Radim Čajka, Zuzana Marcalikova
Publikováno v:
Civil and Environmental Engineering, Vol 17, Iss 1, Pp 96-106 (2021)
The presented article deals with experimental testing of fiber-reinforced concrete slabs using a specialized testing device, the so-called Stand. The experimental testing involved a total of three slabs with different fiber dosing. Dosing was chosen
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::697080bea120bfc1aed8b0ef385eccb2
https://doaj.org/article/ac27f2728507443e9c0db0054b6ae257
https://doaj.org/article/ac27f2728507443e9c0db0054b6ae257
Autor:
Radim Čajka, Zdenka Neuwirthova
Publikováno v:
WSEAS TRANSACTIONS ON APPLIED AND THEORETICAL MECHANICS. 15:194-205
This article deals with a problem of soil modeling. That is a necessary part of foundation modeling.The soil modeling can directly influent the resulting deformation of the foundations and therefore deformationof the whole building. The accurate proc
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::42392536109b4269e0b0b2a8412917f6
https://doi.org/10.37394/232011.2020.15.22
https://doi.org/10.37394/232011.2020.15.22
Autor:
Radim Čajka, Zuzana Marcalikova
Publikováno v:
Civil and Environmental Engineering, Vol 16, Iss 1, Pp 86-106 (2020)
The paper deals with the determination of mechanical properties of fiber reinforced concrete in dependence on various dosages and recipe of concrete. The mechanical properties were determined for the default recipe of concrete, where the individual v
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::65646a1630c2d58f3e6017b2243be9d7
https://doi.org/10.2478/cee-2020-0010
https://doi.org/10.2478/cee-2020-0010
Autor:
Radim Čajka, Michal Kropáček
Publikováno v:
Key Engineering Materials. 832:51-62
The paper describes experimental measurement of volume changes of cement concrete. Volume changes include swelling and shrinkage of cement concrete specimens measured by string strain gauges both internal and external. Parallel to this measurement, t
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::1c13099d3273f75f0326af35d5a78878
https://doi.org/10.4028/www.scientific.net/kem.832.51
https://doi.org/10.4028/www.scientific.net/kem.832.51
Autor:
Jaroslav Navrátil, Radim Čajka
Publikováno v:
Key Engineering Materials. 832:81-88
This paper deals with prestressed foundation - soil interaction. For interaction task is used FEM model of thick slab with shear influence which is supported by structural strength modified elastic half-space. The calculation of deformations, interna
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::17a62f59b4309177860624255e2edfcd
https://doi.org/10.4028/www.scientific.net/kem.832.81
https://doi.org/10.4028/www.scientific.net/kem.832.81
Publikováno v:
Procedia Structural Integrity. 25:27-32
The paper deals with approaches to numerical modelling of fiber reinforced concrete in computer simulations of laboratory tests and the choice of input parameters of the used material model. Two types of fibers with 75 kg/m3 dosage are selected for c
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::4030f62b8e2860341dc42cd3dc58a0a6
https://doi.org/10.1016/j.prostr.2020.04.006
https://doi.org/10.1016/j.prostr.2020.04.006
Publikováno v:
Procedia Structural Integrity. 28:950-956
The paper deals with the comparison of tensile strength of fiber reinforced concrete with different types of fibers. Detailed knowledge of mechanical properties is necessary for advanced design of fiber reinforced concrete structures such as industri
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::66348da4789e4a433a7e3525a0699aa6
https://doi.org/10.1016/j.prostr.2020.11.068
https://doi.org/10.1016/j.prostr.2020.11.068
Autor:
Zuzana Marcalíková, Radim Čajka
The solved area of research is the slab in interaction with the subsoil, where the goal is numerical modeling of the problem using a 3D computational model and nonlinear analysis. Specifically, the case of two experiments with a slab with centric and
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::e6b2aebec0ed3f0efa8d2b06d90007e8
http://hdl.handle.net/10084/146391
http://hdl.handle.net/10084/146391
Parallel code execution as a tool for enhancement of the sustainable design of foundation structures
Publikováno v:
Sustainability, Vol 13, Iss 1145, p 1145 (2021)
Sustainability
Volume 13
Issue 3
Sustainability
Volume 13
Issue 3
Civil engineering structures are always in interaction with the underlying parts of the Earth. This form of interaction results in deformations and stresses that affect the service life of structures. Long and predictable service life is one of impor
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::f480bd7bb742136a6d5f3a7b50f02982
http://hdl.handle.net/10084/142977
http://hdl.handle.net/10084/142977
Publikováno v:
International Journal of GEOMATE. 18
Interaction between the soil and the structure is complex problematic. For the betterunderstanding of the behavior of the flat concrete slab in contact with the subsoil series of tests were performedin the Faculty of Civil Engineering in Ostrava in t
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::6cd9db92536914a69c6651514c5494c5
https://doi.org/10.21660/2020.69.9461
https://doi.org/10.21660/2020.69.9461