CYCLIC TEMPERATURE LOADING RESIDUAL FLEXURAL STRENGHT OF REFRACTORY SLABS

Acta Polytechnica

Petr Konvalinka¹  Ondřej Holčapek¹  Pavel Reiterman¹ 

[1] Czech Technical University in PragueFaculty of Civil EngineeringExperimental Centre;

关键词: refractory slabs;    fibre composite;    bending test;    flexural strength;    high aluminous cement;    natural aggregate;    cyclic thermal load;   

DOI  :  10.14311/AP.2017.57.0097

来源: DOAJ

【 摘 要 】

This paper describes the effect of cyclic elevated temperature loading on refractory slabs made from high performance, fibre reinforced cement composite. Slabs were produced from aluminous cement-based composites, reinforced by different dosages of basalt fibres. The composite investigated in this study had self-compacting characteristics. The slabs used were exposed to different thermal loading – 600 °C, 1000 °C, six times applied 600 °C and 1000 °C. Then, flexural strength was investigated in all groups of slabs, including group reference slabs with no thermal loading. The results show that the appropriate combination of aluminous cement, natural basalt aggregate, fine filler and basalt fibres in dosage 1.00% of volume is able to successfully resist to cyclic temperature loading. Tensile strength in bending of these slabs (after cyclic temperature loading at 600 °C) achieved 6.0 MPa. It was demonstrated that it is possible to use this composite for high extensive conditions in real industrial conditions.

【 授权许可】

Unknown