"2015-05-28+02:00"^^ . . . . "V\u00FDvoj nov\u00FDch zku\u0161ebn\u00EDch konfigurac\u00EDpro ur\u010Den\u00ED vypov\u00EDdac\u00EDch hodnot lomov\u00FDch charakteristik cementov\u00FDch kompozit\u016F" . "2014-01-01+01:00"^^ . . . "2"^^ . "The primary goal of the project is the establishing of cooperation between two compact teams from Civil Engineering Faculties of Vienna University of Technology and Brno University of Technology (the latter one moreover supplied by a member of Institute of Physics of Materials of the Academy of Sciences of the CR). In the framework of this cooperation, a coherent research of nonlinear fracture behaviour of cement-based composites, the most commonly utilized group of materials in building industry, is planed to be conducted and shall start with this project. Selected (basic) parts of this rather demanding research task will be solved in this project. Main attention will be paid to investigation of possibilities and limits of a newly proposed configuration of fracture test based on the combination of boundary conditions of three-point bending and the wedge-splitting geometry, the well established tests in the field of the corresponding material research. It is expected that tests performed in this configuration, enabling a wide range of variants of the stress distribution in the test specimen leading to variations of the size and shape of developed fracture process zone, will bring new insight into problem of size/geometry/boundary effects on fracture parameters and strengths of the materials. A thought out experimental campaign preceded by detailed numerical analyses and accompanied with an advanced evaluation of the test results will be conducted."@en . . "2"^^ . "1"^^ . . "2014-03-31+02:00"^^ . "1"^^ . . . . "http://www.isvav.cz/projectDetail.do?rowId=7AMB14AT012"^^ . "2015-12-31+01:00"^^ . "cementitious composites" . "0"^^ . "Development of new testing configurations for determination of relevant values of fracture charakteristics of cementitious cpmposites"@en . . "cementitious composites; fracture characteristics"@en . . "Prim\u00E1rn\u00EDm c\u00EDlem projektu je nav\u00E1z\u00E1n\u00ED spolupr\u00E1ce mezi dv\u011Bma kompaktn\u00EDmi t\u00FDmy ze stavebn\u00EDch fakult Vienna University of Technology a Vysok\u00E9ho u\u010Den\u00ED technick\u00E9ho v Brn\u011B (druh\u00FD jmenovan\u00FD t\u00FDm je nav\u00EDc dopln\u011Bn \u010Dlenem \u00DAstavu fyziky materi\u00E1lu AV \u010CR v. v. i.). V r\u00E1mci t\u00E9to spolupr\u00E1ce m\u00E1 b\u00FDt proveden v\u00FDzkum neline\u00E1rn\u00EDho lomov\u00E9ho chov\u00E1n\u00ED kompozit\u016F na b\u00E1zi cementu, neju\u017E\u00EDvan\u011Bj\u0161\u00ED t\u0159\u00EDdy materi\u00E1l\u016F ve stavebnictv\u00ED, a tento v\u00FDzkum m\u00E1 b\u00FDt zapo\u010Dat pr\u00E1v\u011B t\u00EDmto projektem. Budou v n\u011Bm \u0159e\u0161eny vybran\u00E9 (z\u00E1kladn\u00ED) \u010D\u00E1sti zm\u00EDn\u011Bn\u00E9ho zam\u00FD\u0161len\u00E9ho, dosti n\u00E1ro\u010Dn\u00E9ho v\u00FDzkumn\u00E9ho programu. Hlavn\u00ED pozornost se bude up\u00EDrat k vy\u0161et\u0159en\u00ED mo\u017Enost\u00ED a limit\u016F nov\u011B navr\u017Een\u00E9 konfigurace lomov\u00E9ho testu zalo\u017Een\u00E9ho na kombinaci okrajov\u00FDch podm\u00EDnek odpov\u00EDdaj\u00EDc\u00EDm zku\u0161ebn\u00EDm geometri\u00EDm t\u0159\u00EDbodov\u011B oh\u00FDban\u00E9ho tr\u00E1mce se z\u00E1\u0159ezem a testu \u0161t\u00EDp\u00E1n\u00EDm kl\u00EDnem, je\u017E jsou ob\u011B etablov\u00E1ny v odv\u011Btv\u00ED v\u00FDzkumu odpov\u00EDdaj\u00EDc\u00EDch materi\u00E1l\u016F. O\u010Dek\u00E1v\u00E1 se, \u017Ee zkou\u0161ky proveden\u00E9 v t\u00E9to konfiguraci, umo\u017E\u0148uj\u00EDc\u00ED \u0161irok\u00FD rozsah variant rozlo\u017Een\u00ED nap\u011Bt\u00ED ve zku\u0161ebn\u00EDm t\u011Blese vedouc\u00ED k r\u016Fznorodosti ve velikosti a tvaru vznikl\u00E9 lomov\u00E9 procesn\u00ED z\u00F3ny, p\u0159inesou nov\u00FD n\u00E1hled na probl\u00E9m vlivu velikosti/tvaru/okrajov\u00FDch podm\u00EDnek na lomov\u00E9 parametry a pevnost zm\u00EDn\u011Bn\u00FDch materi\u00E1l\u016F. Bude vedena promy\u0161len\u00E1 experiment\u00E1ln\u00ED kampa\u0148, j\u00ED\u017E bude p\u0159edch\u00E1zet detailn\u00ED numerick\u00E1 anal\u00FDza a ji\u017E bude doprov\u00E1zet vyhodnocen\u00ED v\u00FDsledk\u016F zkou\u0161ek pokro\u010Dil\u00FDmi postupy." . "7AMB14AT012" . . . . . . . .