Abstract
© 2016 Elsevier Ltd. Maximum loads of notched three-point-bend specimens with constant height are used to determine the tensile strength and fracture toughness of concrete. Normally the tensile strength and fracture toughness cannot be obtained from small three-point-bend specimens because of the highly heterogeneous composite structures of concrete and formation of fictitious crack prior to the maximum load. A simple fracture model is established, linking fictitious crack to the maximum aggregate size so that the concrete structure and fictitious crack formation can be considered together. Maximum loads of three-point-bend specimens with different initial notches containing different influence of the tensile strength and fracture toughness are then analyzied.
Original language | English |
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Pages (from-to) | 67-77 |
Number of pages | 11 |
Journal | Engineering Fracture Mechanics |
Volume | 160 |
Early online date | 5 Apr 2016 |
DOIs | |
Publication status | Published - 1 Jul 2016 |