Effect of Aggregate and Specimen Size on Fracture Properties of Dam Concrete

Saouma, Victor E.; Broz, Jerry J.; Brühwiler, E.; Boggs, Howard

doi:10.1061/(asce)0899-1561(1991)3:3(204)

Cited by 103 publications

(48 citation statements)

References 11 publications

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“…1. Ubiquitiformal fracture energy G uf for concrete: (a) Swartz and Kan (1992), (b) Saouma et al (1990Saouma et al ( , 1991, Saouma and Barton (1994) materials, because the relation for fracture toughness is derived from rationalistic deduction on the assumption of linear elasticity. It seems now that the above mentioned discrepancy can be reasonably explained based on the ubiquitiformal fracture energy as follows.…”

Section: Numerical Results and Discussionmentioning

confidence: 99%

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Ubiquitiformal fracture energy

Yang

et al. 2017

jtam

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The ubiquitiformal fracture energy is proposed in the paper and its explicit expression is obtained. Moreover, the numerical results for concrete are found to be in good agreement with those for the critical strain energy release rate. The discrepancy between the numerical results of the traditional fracture energy and the critical strain energy release rate can be explained reasonably, which implies that the ubiquitiformal fracture energy should be taken as an available fracture parameter of materials. Finally, it is numerically found for some concrete that there is not size effect for the ubiquitiformal fracture energy.

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Section: Numerical Results and Discussionmentioning

confidence: 99%

“…To investigate numerically the properties of the ubiquitiform fracture energy, concrete materials presented in Swartz and Kan (1992) as well as by Saouma et al (1990Saouma et al ( , 1991 and Saouma and Barton (1994) are used. The corresponding material properties as well as the calculated values of δ min from Eq.…”

Section: Numerical Results and Discussionmentioning

confidence: 99%

Ubiquitiformal fracture energy

Yang

et al. 2017

jtam

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“…The average values reported in these tables for G lc computed by the direct energy method are for beams with a ratio of crack length divided by height of beam less than or equal to 0.65. Tables B-3 Saouma, Broz, Bruhwiler, and Boggs (1991) study were used in this study. One of the unique aspects of this testing program is that concrete specimens with maximum size aggregate consistent with the size used in some dams and locks were included in the testing program.…”

Section: B3 Refai and Swartz (1988) Three-point Beam Bending Test Rementioning

confidence: 99%

Smeared and Discrete Crack Evaluations of a Lock Exhibiting Earth Pressure-Induced Cracking

Ebeling¹,

Patev²,

Riveros³

2001

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“…While standard Hopkinson bars with a diameter in the range of 10-20 mm are sufficient for dynamic testing of fine-grained materials, like steel, larger bars are needed to load concrete specimens of meaningful size. In fact, the specimen size for concrete should be larger than four times the maximum aggregate size (as a rule-of-thumb), in order for a representative volume of material to be tested [18]. The material and the dimension of the bar have also to satisfy the appropriate conditions in order for the one-dimensional theory of wave propagation to be applicable.…”

Section: Introductionmentioning

confidence: 99%

Compressive behaviour of dam concrete at higher strain rates

Caverzan

Peroni

Solomos

2016

Eur. Phys. J. Spec. Top.

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Abstract. The mechanical behaviour of concrete when subjected to impact or blast has still many aspects requiring further study. Dam concrete is characterized by large coarse aggregates, hence large specimen sizes are needed in order to study a representative volume of the material. Exploiting an innovative equipment, based on Hopkinson bar techniques, the dynamic behaviour of concrete of 64 mm maximum aggregate size has been investigated. Direct dynamic compression tests have been performed on medium and large size cylindrical samples. Full stress-strain curves have been obtained, which have allowed the estimation of fracturing energies and of the relevant dynamic increase factor. The experimental campaign has also included a reference standard concrete in order to highlight the peculiarity of the dam concrete at high strain rates and to validate the transition of this type of testing to very large specimens.

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Effect of Aggregate and Specimen Size on Fracture Properties of Dam Concrete

Cited by 103 publications

References 11 publications

Ubiquitiformal fracture energy

Ubiquitiformal fracture energy

Smeared and Discrete Crack Evaluations of a Lock Exhibiting Earth Pressure-Induced Cracking

Compressive behaviour of dam concrete at higher strain rates

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