Fig. 10
From: Behaviour of Carbon and Basalt Fibres Reinforced Fly Ash Geopolymer at Elevated Temperatures
SEM images of fly ash based geopolymer with carbon and basalt fibre at different elevated temperatures. a Carbon fiber (ambient temperature), b Basalt fiber (ambient temperature), c Carbon fiber (400 °C temperature), d Basalt fiber (400 °C temperature), e Carbon fiber (800 °C temperature), and f Basalt fiber (800 C temperature) [arrows in b, d and f indicate the voids/pores in basalt fibre composite].