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Applications of boundary effect model to quasi-brittle fracture of concrete and rock

journal contribution
posted on 06.12.2017, 00:00 by Kai DuanKai Duan, X Hu
A recently-developed asymptotic boundary effect model for the quasi-brittle fracture of finite-sized fracture mechanics specimens is used to analyse the experimental results available in the literature. Three different experimental results are chosen in this study to cover various experiment designs, including geometrically similar specimens, specimens of identical size with different crack lengths and specimens of different configurations and geometries. It is shown that the size effect associated with quasi-brittle fracture, as reported in the literature, is in fact, due to the influence of specimen boundaries, The observed dependence of fracture behaviour on specimen size and crack length can be described by the same boundary effect model. The new asymptotic model is also compared with other size effect models dealing exclusively with geometrically similar specimens, and its distinct advantages over other models are discussed.

Funding

Category 1 - Australian Competitive Grants (this includes ARC, NHMRC)

History

Volume

3

Issue

3

Start Page

413

End Page

422

Number of Pages

10

eISSN

1347-3913

ISSN

1346-8014

Location

Japan

Publisher

Nihon Konkurito Kogaku Kyokai

Language

en-aus

Peer Reviewed

Yes

Open Access

No

External Author Affiliations

University of Western Australia;

Era Eligible

Yes

Journal

Journal of advanced concrete technology.