PSI - Issue 2_B

N. Selyutina et al. / Procedia Structural Integrity 2 (2016) 438–445 Author name / Structural Integrity Procedia 00 (2016) 000 – 000

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 The increase of static strength under influence of water or fiber contain in concrete is related with behaviour of the incubation time as a sensitive parameter to inner structure concrete.  The influence of changes in inner structure of the material by the fracture stress under dynamic loading is appeared bigger than under quasi-static loading.  The modification of strength characteristics of concrete can achieved applying scale level concept.  Additional experimental results are necessary for interpretation of phenomena related with the increment of strength properties of concrete.

Acknowledgements

The research was supported by the Russian Foundation for Basic Research (Grants Nos. 14-01-00814, 16-51 53077 and 16-31-00254), by the Saint-Petersburg State University (grant 6.38.243.2014), by Maria Curie Foundation TAMER No.610547.

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