The Alkali and Temperature Resistance of Some Fibres
Keywords:
mineral and kaolin wool, carbon and polypropene fibres, autoclave conditions, alkaline corrosion, porous concrete.Abstract
Porous concrete needs to be reinforced to improve its strength, frost-resistance, durability etc. An alkaline media (pH = 12.6) is formed during the production of porous autoclave concrete, so the reinforcing fibres should be stable to alkali and temperature influence (up to 180 °C). The resistance to these factors of four different fibres (mineral and kaolin wool, carbon and polypropene fibres) was investigated using X-ray diffraction and scanning electron microscopy (SEM). It was determined that kaolin wool cannot be recommended for use as a reinforcing agent during the formation of porous concrete. The others investigated fibres might be used for these purposes.
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