Experimental Analysis of the Development of Compressive Strength, Modulus of Elasticity and Acoustic Emission Parameters of Alkali-Activated Composites

Abstract:

This paper describes an experiment focused on monitoring the development of the modulus of elasticity and the compressive strength of composites that are based on alkali‑activated slag (AAS) during the first 28 days of ageing. The test specimens were tested at the age of 3 and 28 days using two non-destructive methods (ultrasonic pulse and resonance methods) to determine the value of the dynamic modulus of elasticity. Subsequently, the same specimens were used to determine the static modulus of elasticity using compressive stress test, during which the behaviour of the composite was monitored by equipment for recording the acoustic emission in the material. The result of the experiment is the evaluation of the behaviour of the AAS composite in regard to the development of its modulus of elasticity and compressive strength, as well as in regard to the acoustic emission method during loading.

• Periodical: Key Engineering Materials (Volume 760)
• Pages: 266-271
• DOI: https://doi.org/10.4028/www.scientific.net/KEM.760.266
• Online since: January 2018
• Authors: Dalibor Kocáb*, Libor Topolář, Vlastimil Bílek Jr., Barbara Kucharczyková, Michaela Hoduláková, Romana Halamová
• Keywords: Acoustic Emission, Alkali-Activated Composite, Compressive Strength, Modulus of Elasticity

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