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ŠIMONOVÁ, H. ZAHÁLKOVÁ, J. ROVNANÍKOVÁ, P. KERŠNER, Z. SCHMID, P.
Original Title
Effect of Amorphous Silicon Dioxide Amount on the Mechanical Fracture Parameters of Cement Mortars
Type
conference paper
Language
English
Original Abstract
This paper presents selected results from a study concerning mechanical fracture parameters related to the formation of the solid structure of cement mortars. The tested mixtures were composed of an invariable quantity of cement (type CEM I 42.5 R) and an increasing amount of amorphous SiO2 (marked with a P), or a variable quantity of cement replaced by varied quantities of amorphous SiO2 (marked with an N). It was decided that the consistencies of the fresh mixtures should be identical: to ensure this, the water-cement ratio was increased as necessary. Quantification of the mechanical fracture parameters of the studied composites (fracture toughness, fracture energy, compressive strength, modulus of elasticity) was performed via the evaluation of fracture tests performed on beam specimens with an initial stress concentrator loaded in three-point bending. Subsequently, the results of the experiments in the form of load versus displacement diagrams were processed using the effective crack fracture model and the work of fracture method.
Keywords
Cement mortar, amorphous SiO2, fracture test, fracture parameters.
Authors
ŠIMONOVÁ, H.; ZAHÁLKOVÁ, J.; ROVNANÍKOVÁ, P.; KERŠNER, Z.; SCHMID, P.
Released
25. 4. 2016
Publisher
Trans Tech Publications
Location
Switzerland
ISBN
978-3-0383-5675-2
Book
Solid State Phenomena
Edition number
249
1012-0394
Periodical
Number
State
Swiss Confederation
Pages from
147
Pages to
151
Pages count
5
URL
https://www.scientific.net/SSP.249.147
BibTex
@inproceedings{BUT124281, author="Hana {Šimonová} and Jana {Břicháčková} and Pavla {Rovnaníková} and Zbyněk {Keršner} and Pavel {Schmid}", title="Effect of Amorphous Silicon Dioxide Amount on the Mechanical Fracture Parameters of Cement Mortars", booktitle="Solid State Phenomena", year="2016", journal="Solid State Phenomena", number="249", pages="147--151", publisher="Trans Tech Publications", address="Switzerland", doi="10.4028/www.scientific.net/SSP.249.147", isbn="978-3-0383-5675-2", issn="1012-0394", url="https://www.scientific.net/SSP.249.147" }