A kind of C230 strength grade ultra-high performance fiber concrete containing coarse aggregate and its preparation method
A technology of fiber-reinforced concrete and strength grades, applied in the direction of climate sustainability, sustainable waste treatment, solid waste management, etc. The effect of the process
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[0052] A kind of preparation method of the C230 strength class ultra-high performance fiber concrete containing coarse aggregate of the present invention, comprises the following steps:
[0053] 1) Add 11 parts of activator and 2.9 parts of defoamer into water with a total water content of 25% in parts by mass, which is recorded as aqueous solution 1, and disperse 16 parts of water reducing agent and 50 parts of hydroxyl modified carbon nanotubes Liquid and 52 parts of graphene oxide dispersions were added to 50% water, which was denoted as aqueous solution 2;
[0054] 2) 780 parts of fine aggregate (the mass ratio of river sand and quartz sand is 6:4), 900 parts of gravel, 1.7 parts of cellulose fiber and 78 parts of copper-coated microwire steel fiber were added to the mixer in sequence, Stir evenly for 3-5 minutes;
[0055] 3) Then, add 560 parts of cement, 75 parts of fly ash, 63 parts of rice husk ash, and 145 parts of silica fume in sequence, and add the aqueous solutio...
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