The Effect of Fibers on the Basic Physical-Mechanical Properties of the Alkali-Activated Systems

Abstract:

Fiber concrete is a specific kind of concrete which is enriched by suitable type of fibers during its manufacturing process. Due to this fact, better physical and mechanical properties are achieved according to the requirements. To achieve the best quality of the concrete it is necessary to choose the most suitable type of fibers and determine their exact dosage. Alkali-activated systems have been significantly developed in recent years. These are composites that could at least partly replace the Portland cement based materials in the future. This paper deals with the determination of the influence of the type of fibers used on the basic physical-mechanical properties of prepared mixtures and their comparison with the reference mixture. In particular, two types of activators of sodium water glass and anhydrous disodium silicate were used as activator in the experiment. In the experiment, a blast furnace slag was used as a binder. Flexural and compressive strengths were tested and the bulk density, deflection and dynamic modulus of elasticity were determined.

• Periodical: Solid State Phenomena (Volume 296)
• Pages: 118-124
• DOI: https://doi.org/10.4028/www.scientific.net/SSP.296.118
• Online since: August 2019
• Authors: Lukáš Prochazka, Jana Boháčová*
• Keywords: Alkali-Activated Material, Blast Furnace Slag, Fibers

References

[1] Boháčová, J. Studium vlivu různých typů plniv na vlastnosti geopolymerních systémů na bázi alkalicky aktivovaných strusek (2008).

[2] Brandštetr, J. Alkalické cementy a betony. SILIKA (2000).

[3] Brandštetr, J., Koloušek, D., Vorel, J., Opravil, T., Bayer, P.: Geopolymery, geopolymerní cementy a betony. SILIKA, vol. 7, pp.208-2011, (2005).

[4] Český lékopis 2009:doplněk 2013, Praha Grada, 2013. ISBN 678-80-247-4679-1.

[5] ČSN 73 1371 Non-destructive testing of concrete – Method of ultrasonic pulse testing of concrete.

[6] ČSN EN 1008 Mixing water for concrete - Specification for sampling, testing and assessing the suitability of water, including water recovered from processes in the concrete industry, as mixing water for concrete.

DOI: 10.3403/02609198

[7] ČSN EN 12390-3 Testing hardened concrete – Part 3: Compressive strength of test specimens [8] ČSN EN 196-1 Methods of testing cement – Part 1: Determination of strength.

DOI: 10.3403/30360097

[9] ČSN EN 196-3 Methods of testing cement - determining standard consistence, setting times and soundness of cements.

[10] http://sklocement.cz/, Sklocement Beneš s.r.o.

[11] http://www.basf-sh.cz/, BASF Stavební hmoty Česká republika s.r.o.

[12] http://www.eurosarm.cz.

[13] http://www.nycon.com/,Nycon Corporation, Nycon Headquarters, USA.

DOI: 10.5406/illinois/9780252036293.003.0005

[14] Procházka, L. Stanovení vlivu použitého typu vláken na základní fyzikálne-mechanické vlastnosti alkalicky aktivovaných systémů (2016).

[15] www.kotouc.cz.