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FRANTÍK, P. ROVNANÍKOVÁ, P. KERŠNER, Z.
Originální název
Strength of AAAS Composites with Ceramic Precursor over Time
Typ
článek ve sborníku ve WoS nebo Scopus
Jazyk
angličtina
Originální abstrakt
The paper deals with the approximation of the time evolution of the strengths of selected alkali-activated aluminosilicate (AAAS) composites based on ceramic precursors. Composites made of brick dust as a precursor and an alkaline activator with a silicate modulus of Ms = 0.8, 1.0, 1.2, 1.4, and 1.6 were investigated. The filler consisted of standard quartz sand in one case, and crushed brick in the other. The test specimens had nominal dimensions of 40 × 40 × 160 mm and were tested in three-point bending after 7, 28, 90, and 300 days of maturation. From each composite, 3 specimens were tested and the compressive strength was determined from the 6 specimen parts that remained after the bending tests. The obtained flexural and compressive strength values for the abovementioned 4 composite ages were approximated by the exponential function , where the coefficient a represents a horizontal asymptote to the approximation curve, i.e. the theoretical strength of the composite at time t = ∞; the exponential term of the approximation with the coefficients b and c expresses the degree of the time-dependent change of the respective compressive strength in the interval t = (0, ∞). The approximation was performed with the least squares method using genetic algorithms implemented in the Java GA package with open source code.
Klíčová slova
Alkali-Activated Aluminosilicate, Ceramic Precursor, Compressive Strength, Flexure Strength, Time Approximation
Autoři
FRANTÍK, P.; ROVNANÍKOVÁ, P.; KERŠNER, Z.
Vydáno
9. 8. 2021
Nakladatel
Trans Tech Publications Ltd
Místo
Switzerland
ISBN
9783035737554
Kniha
The 27th International Conference Concrete Days
ISSN
1012-0394
Periodikum
Solid State Phenomena
Ročník
322
Stát
Švýcarská konfederace
Strany od
60
Strany do
65
Strany počet
6
BibTex
@inproceedings{BUT176248, author="Petr {Frantík} and Pavla {Rovnaníková} and Zbyněk {Keršner}", title="Strength of AAAS Composites with Ceramic Precursor over Time", booktitle="The 27th International Conference Concrete Days", year="2021", journal="Solid State Phenomena", volume="322", pages="60--65", publisher="Trans Tech Publications Ltd", address="Switzerland", doi="10.4028/www.scientific.net/SSP.322.60", isbn="9783035737554", issn="1012-0394" }