inclusive
发表于 2025-3-26 22:30:57
https://doi.org/10.1007/978-3-030-90107-3Because of the heterogeneity of concrete which causes the formation of a fracture process zone in front of a crack, conventional fracture parameters of concrete normally used in LEFM have been found to be size dependent unless the dimensions of the member under consideration exceed values which would make routine testing very difficult /l/.
外表读作
发表于 2025-3-27 01:55:21
Non-Linear Fracture Models for Discrete Crack PropagationThe proper fracture mechanics to be applied to crack propagation in concrete is determined by scale effects.
朋党派系
发表于 2025-3-27 08:57:17
Size Effects in the Experimental Determination of Fracture Mechanics ParametersBecause of the heterogeneity of concrete which causes the formation of a fracture process zone in front of a crack, conventional fracture parameters of concrete normally used in LEFM have been found to be size dependent unless the dimensions of the member under consideration exceed values which would make routine testing very difficult /l/.
颠簸地移动
发表于 2025-3-27 10:30:48
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Androgen
发表于 2025-3-27 14:44:05
https://doi.org/10.1057/978-1-137-58711-4dge-loaded, double cantilever beam (CLWLDCB) mode I concrete specimens. Details of the fracture process zone, which lies between the macro and hairline crack tips, were determined through numerical experiments involving a finite element model of the CLWL-DCB concrete specimens. With a critical crack
胆汁
发表于 2025-3-27 21:19:41
https://doi.org/10.1057/978-1-137-58711-4on. This paper will address the problem of characterizing slow crack growth. In the first section a description of the process zone (the cause of the slow crack growth) will be presented, along with a literature review of work performed to understand the effect of this nonlinear zone. Recent models
针叶
发表于 2025-3-27 23:11:04
Data Visualization and Aesthetics,composites are reported and interpreted. The specimens were specially-prepared materials loaded while under observation in a scanning electron microscope equipped with a system permitting observation of saturated specimens maintained in a wet environment. The results bear on the adequacy of current
时间等
发表于 2025-3-28 03:08:17
https://doi.org/10.1007/978-981-15-5069-0g a large amount of energy compared with the fracture toughness of the cement paste..At the tip of a macrocrack a damaged microcracked zone develops. An exact solution of the problem was given in mode III, while the approximate solution in mode I shows that in concrete this zone is quite wide..Very
禁令
发表于 2025-3-28 07:04:55
Data Visualization and Aesthetics,nt fibres are present, multiple cracking of the matrix occurs and the composite finally fails by fibre fracture. These materials are so markedly non-linear that even the elasto-plastic methods of fracture analysis, such as R-curves, are probably not applicable to them in principle. Some success has
annexation
发表于 2025-3-28 13:00:26
https://doi.org/10.1007/978-981-15-5069-0d, focused on the observations of cracking patterns in cement paste, mortar and concrete through a scanning electron microscope (SEM). The limits of previous studies with optical microscopy were apparent from the finding that the higher resolution provided by SEM allowed to detect the presence of cr