A kind of ultra-high performance fiber concrete of c210 strength grade 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., can solve the problems of poor deformation resistance and limitations, and achieve increased strength, increased cohesion, and gelation The effect of material particle uniformity
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[0052] A kind of preparation method of the ultra-high-performance fiber concrete of the C210 intensity grade that the present invention contains coarse aggregate, comprises the following steps:
[0053] 1) Add 11 parts of activator and 2.9 parts of antifoaming agent weighed in parts by mass into water with a total water content of 25%, which is recorded as aqueous solution 1, and 15 parts of water reducing agent, 45 parts of hydroxyl modified carbon nanotube Dispersion liquid and 49 parts of graphene oxide dispersion liquids are added into the water of 50% of total water content, 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 532 parts of cement, 78 parts of fly ash, 70 parts of rice husk ash, and 132 parts of s...
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