Muralidhara, S., Raghu Prasad, B. K., Karihaloo, Bhushan Lal  ORCID: https://orcid.org/0000-0003-0657-2678 and Singh, R. K.
2011.
Size-independent fracture energy in plain concrete beams using tri-linear model.
Construction and Building Materials
25
(7)
, pp. 3051-3058.
10.1016/j.conbuildmat.2011.01.003
|
Abstract
The boundary effect or the size effect on the fracture properties of concrete has been studied assuming a bi-linear model for the distribution of local fracture energy concept. Boundary effect is observed not only near the back boundary but also near the notch tip, where a fictitious boundary seems to exist, separating the linear and non-linear fracture zones. In this paper a tri-linear function is assumed for the local fracture energy distribution along the ligament and expressions relating RILEM fracture energy and the size-independent fracture energy are developed. Transition ligament length measurements based on the acoustic emission (AE) histogram of events are used to obtain size-independent fracture energy. Length of the fracture process zone is identified in the AE histogram and compared with the value obtained from softening beam model. There seems to be a good agreement between the results.
| Item Type: | Article |
|---|---|
| Date Type: | Publication |
| Status: | Published |
| Schools: | Research Institutes & Centres > Neuroscience and Mental Health Research Institute (NMHII) Schools > Engineering |
| Subjects: | T Technology > TA Engineering (General). Civil engineering (General) |
| Uncontrolled Keywords: | local fracture energy ; tri-linear model ; fictitious boundary ; size-independent fracture energy ; concrete |
| Publisher: | Elsevier |
| ISSN: | 0950-0618 |
| Last Modified: | 18 Oct 2022 13:28 |
| URI: | https://orca.cardiff.ac.uk/id/eprint/14029 |
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