PSI - Issue 23

Aneta Nowak-Michta et al. / Procedia Structural Integrity 23 (2019) 77–82 Author name / Structural Integrity Procedia 00 (2019) 000 – 000

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4. Conclusions

In the tested concretes with a constant basic composition, along with the increase in SP compressive strength in NAEC increased by 13-14%. AE with a fixed dose of AEA resulted in a decrease in strength from 5 to 17%, which depended on the SP content (liquefaction). SP (liquefaction) caused: a decrease in the effectiveness of AEA (which was confirmed by the decrease in air content - Vp and A), unfavorable change in the structure of porosity ( α , L and A 300 ), as well as a change in density (I D ). As a result of reduced efficiency of AEA compressive strength increased along with the increase of SP content by 1-13%.

Acknowledgements

The paper preparation was supported in part with the funds of the project EMMAT E-mobility and sustainable materials and technologies PPI/APM/2018/1/00027 financed by the Polish National Agency for Academic Exchange (NAWA).

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