Development and testing of fast curing, mineral-impregnated carbon fiber (MCF) reinforcements based on metakaolin-made geopolymers

Mineral-impregnated, carbon ?ber composites (MCF) are a promising alternative to conventional concrete reinforcements. For the efficient industrial production of MCF, sufficient processing time for impregnation suspension must be ensured. In present investigation, metakaolin-made geopolymer (GP) has been developed and tested this purpose. The carbon-fiber yarns was performed continuously automated. Subsequently, MCF were heat-treated at 75 °C accelerate reaction processes. mechanical performance gradually increased in advancement curing process from 2 8 h, which is attributed greater extent geopolymerization. such extended curing, thermogravimetric microscopic analysis showed indeed more “reacted” microstructure but also higher content voids. After heating tensile strength Young's modulus reached 2960 MPa 259 GPa, respectively, when related yarn cross-sectional area.