| 摘要 |
Composite concrete of the type comprising a hydraulic binder, aggregates, water, adjuvants and metal fibres, characterised in that it comprises, in parts by weight per 100 parts of hydraulic binder: - a hydraulic binder consisting of cement (100 parts); - aggregates of high hardness and particular, either round or angular, geometry (120 to 200 parts); - very fine aggregates (40 to 65 parts); - microsilica (3 to 15 parts); - water (25 to 35 parts); - adjuvants consisting of plasticisers (1.5 to 5 parts) and an antifoam (0 to 0.5 part); - metal fibres in a proportion of 6 to 15 % by weight relative to the matrix. This concrete is suitable for limiting the entry of projectiles.
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