ULTRA HIGH RESISTANCE CONCRETE REINFORCED WITH STEEL FIBERS

摘要

Ultra-high strength steel fibre-reinforced concrete. It comprises: €¢ at least one CEM I type Portland cement at a ratio of 600-800 kg/m 3 , with a minimum compressive strength of 52.5 MPa after 28 days; €¢ aggregates at a ratio of 900-1300 kg/m 3 ; €¢ added reinforcement fibres comprising at least one steel fibre at a ratio of 150-210 kg/m 3 ; €¢ fillers at a ratio of 25-45 kg/m 3 , including natural calcium carbonate and nano-silica; and €¢ a polycarboxylate-based superplasticising additive at a ratio of 45-55 kg/m 3 ; and €¢ drinking water for the mixture at a ratio of 125-160 kg/m 3 .