ULTRA-HIGH-STRENGTH CONCRETE REINFORCED WITH STEEL FIBRES

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 .