Tool such as open mold for forming composite materials in an organic matrix, comprises a refractory concrete comprising mineral aggregates associated with a hydraulic binder having cement and reinforced with fibers

摘要

The tool comprises a refractory concrete comprising mineral aggregates (60-99 wt.%) associated with a hydraulic binder having cement (2 wt.%) and reinforced with fibers (0.1-10 vol.%), where 50% of the aggregates are made of silicon carbide (85 wt.%). The cement comprises greater than 50% of alumina. The aggregates have a maximum size of 1-10 mm. The fibers are metal fibers, mineral fibers, polymer fibers and natural fibers, and have a length of 5-100 mm and a diameter of less than 2 mm. The refractory concrete is resistant to temperature of up to 500[deg] C.