NDT Monitoring of Alkali-activated Material Carbonation

conference paper

English

Production of Portland cement is relatively environmentally demanding (high CO2 emissions, extraction of raw materials for its production). Alkali-activated materials are an alternative to conventional Portland cement in the production of concrete. For alkali-activated binder concretes, their ability to withstand corrosive environments and their ability to protect steel reinforcement must be assessed. It is also necessary to know the suitability of non-destructive methods for monitoring the degradation process of these concretes. The paper deals with the carbonation monitoring of concrete with alkali-activated binder (slag) by the impact-echo method. Slag activated by sodium hydroxide (NaOH) was used as a binder. The specimens were tested by the non-destructive method (Impact-echo, ultrasound velocity). We focused on the shift of the dominant frequency obtained by the Impact-echo method.

Alkali-activated systems, Binder, Slag, Sodium hydroxide, Portland cement, Nondestructive testing, NDT, Impact-echo.

PLŠKOVÁ, I.; MATYSÍK, M.; TOPOLÁŘ, L.; HRUBÝ, P.

31. 10. 2020

Trans Tech Publications Ltd.

Switzerland

9783035736533

Rehabilitation and Reconstruction of Buildings III

Michaela Kostelecká

1013-9826

Key Engineering Materials (print)

868

Swiss Confederation

45

50

6