Influence of a Shrinkage-Reducing Admixture on the Damage to the Internal Structure of Alkali-Activated Composites during Testing of the Modulus of Elasticity


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This article deals with an experimental determination of the static modulus of elasticity in compression on fine-grained composites based on alkali-activated slag. This experiment included an alkali-activated composite without a shrinkage-reducing admixture and the same composite with a shrinkage-reducing admixture. The test specimens were subjected to testing of the dynamic modulus of elasticity using the ultrasonic pulse velocity test and the resonance method as well as of the static modulus of elasticity in compression. The static modulus of elasticity test was accompanied by the measurement of the acoustic activity of the material using the acoustic emission method, whose advantages is the possibility to detect early formation and propagation of cracks in the internal structure of the material. The output of the described experiment is a detailed evaluation of the differences in the behaviour of the tested alkali-activated composites based on the observed values of the modulus of elasticity and the recorded acoustic activity of the material during loading.



Solid State Phenomena (Volume 272)

Edited by:

Šárka Nenadálová, Petra Johová and Tereza Sajdlova




D. Kocáb et al., "Influence of a Shrinkage-Reducing Admixture on the Damage to the Internal Structure of Alkali-Activated Composites during Testing of the Modulus of Elasticity", Solid State Phenomena, Vol. 272, pp. 28-33, 2018

Online since:

February 2018




* - Corresponding Author

[1] V. Bílek Jr., L. Pařízek, L. Kalina, Effect of the by-pass cement-kiln dust and fluidized-bed-combustion fly ash on the properties of fine-grained alkali-activated slag-based composites, Mater. Technol. 49 (2015) 4, 549–552.

[2] M. Palacios, F. Puertas, Effectiveness of Mixing Time on Hardened Properties of Waterglass-Activated Slag Pastes and Mortars, ACI Materials Journal, 108 (2011), 73–78.

[3] V. Bílek Jr., L. Kalina, J. Koplík, M. Mončeková, R. Novotný, Effect of a combination of fly ash and shrinkage-reducing additives on the properties of alkali-activated slag-based mortars, Mater. Technol. 50 (2016) 5, 813–817.

[4] J. L. Vilaplana, F. J. Baeza, O. Galao, E. G. Alcocel, E. Zornoza, P. Garcés, Mechanical properties of alkali activated blast furnace slag pastes reinforced with carbon fibers, Constr. Build. Mater. 116 (2016) 63-71.

[5] P. Rovnaník, H. Šimonová, L. Topolář, P. Bayer, P. Schmid, Z. Keršner, Carbon nanotubereinforced alkali-activated slag mortars, Constr. Build. Mater. 119 (2016) 223-229.

[6] B. Kucharczyková, V. Bílek Jr., D. Kocáb, O. Karel, Shrinkage of Fine-Grained Composites Based on Alkali- Activated Slag, Non-traditional Cement & Concrete, Brno, 2017, 20-21.

[7] D. Kocáb, M. Králíková, P. Cikrle, P. Misák, B. Kucharczyková, Experimental analysis of the influence of concrete curing on the development of its elastic modulus over time, Mater. Technol. 51 (2017) 4, 657-665.

[8] ČSN ISO 1920-10 Zkoušení betonu - Část 10: Stanovení statického modulu pružnosti v tlaku, Praha, ÚNMZ, (2016).

[9] ZD Rpety-DAKEL: Diagnostická metoda akustické emise a její perspektivy, TECHMagazín, 3 (2011) 1-2.

[10] V. Malhorta, A. N. Carino, Handbook on nondestructive testing of concrete, 2. ed., CRC Press, Boca Raton, (2004).

[11] L. Topolář, L. Pazdera, B. Kucharczyková, J. Smutný, K. Mikulášek, Using acoustic emission methods to monitor cement composites during setting and hardening, Appl. Sci. 7 (2017) 5, 451.

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