Refractory Cement Composite Reinforced by Various Types of Fibers

Abstract:

Following article deals with experimental investigation of elevated temperatures influence on mechanical properties of refractory cement composite, which seems to be very progressive and interesting field of material science. Specimens 40 x 40 x 160 mm³ were exposed to 600 °C and 1000 °C for three hours. Using of aluminous cement, in this case Secar®71 with70 % of Al₂O₃, means the basic premise for refractory composites. Natural crushed basalt aggregate of two fractions 0-4 mm and 2-5 mm works as filler. Metakaolin MefistoL05 in amount 225 kg/m³ represents the fine filler, commonly used in refractory concrete production. Ceramic fibers or combination of two lengths of basalt fibers significantly improve the flexural characteristics. The goal of this research is to quantified influence of basalt fibers and ceramic fibers on flexural strength, compressive strength and bulk density of cement composite in high temperature conditions.

• Periodical: Materials Science Forum (Volume 824)
• Pages: 173-177
• DOI: https://doi.org/10.4028/www.scientific.net/MSF.824.173
• Online since: July 2015
• Authors: Ondřej Holčapek, Pavel Reiterman, Marcel Jogl*
• Keywords: Aluminous Cement, Basalt Aggregate, Basalt Fibers, Basic Properties, Ceramic Fibers, High Temperatures, Mechanical Properties

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