PSI - Issue 17

Piotr Smarzewski / Procedia Structural Integrity 17 (2019) 5–12 Piotr Smarzewski / Structural Integrity Procedia 00 (2019) 000 – 000

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The presence of 10% silica fume results in the largest increases in mean tensile splitting strength and modulus of elasticity by about 26% and 5%, respectively. The increase in compressive strength is 14% at 25% SF, but the drop does not exceed 1% in the range of 25 to 10% SF. The mean fracture energy is the highest for the HPC with 5% SF content and it is slightly increases by 2% compared to the HPC with 10% SF. The calculated characteristic length indicates that the HPC with 15% SF content is the most brittle. However, the differences of the characteristic length in the SF content range from 10% to 25% do not exceed 5%. A more pronounced decline in the brittleness of HPC has occurred with 5% SF at a w/b ratio of 0.25.

Acknowledgements

The financial support from the Polish Ministry of Science and Higher Education within statutory research project No. S/15/B/1/2019 is greatly appreciated.

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