Engineering Mechanics

Proceedings Vol. 9 (2003)

ENGINEERING MECHANICS 2003

Copyright © 2003 Institute of Theoretical and Applied Mechanics, Academy of Sciences of the Czech Republic, v.v.i., Prague

 

Matesová D., Keršner Z., Rovnaníková P., Drdlová M.
pages 196 - +6p., full text

Presented paper deals with fracture behaviour of carbon fibre reinforced composites on the basis of Portland (PC) and alumina (HC) cement. Carbon fibres can be used for these composites to improve their high temperature resistance and mechanical/fracture properties. For quantification of the resistance against a crack propagation the laboratory specimens 40x40x160 mm were heated with temperatures up to 200, 400, 600, 800 and 1000°C with holding time 1 hr; a set of comparative specimens was made as well. After cooling to the laboratory temperature, the specimens were notched with a diamond saw and subjected to the three point bending test with a notch in a tensile zone. Determined mechanical/fracture parameters served for comparison of suitability of PC and HC composites utilization as protective fire resistant slab structures.

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