High-toughness and high-cohesiveness C240 ultrahigh-strength hybrid fiber concrete and preparation method thereof
A technology with high cohesiveness and mixed fibers, which is applied in clay preparation devices, chemical instruments and methods, manufacturing tools, etc., can solve problems such as inability to achieve toughening effects, achieve low cost, good gradation, and reduce CO2 emissions Effect
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Embodiment 1
[0103] 1) Add 19.5 parts by mass of water reducer and 42 parts by mass of nano-titanium / graphene oxide dispersion into two-thirds of the total water, which is recorded as mixed solution 1; 14.5 parts of shrinkage reducing agent and 3.2 parts of antifoaming agent are added to the water of one-third of the total water volume, which is recorded as mixed solution 2; 22.3 parts of carboxyl-modified polyvinyl alcohol polymers are prepared for later use; the total water volume is 72 parts; Among them, the nano-titanium / graphene oxide dispersion is composed of 1.2 parts of graphene oxide powder and 0.5 parts of nano-TiO 2 Made; carboxy-modified polyvinyl alcohol polymer is prepared from raw materials according to mass percentage: carboxy-modified polyvinyl alcohol 39%, water 60%, polyacrylate defoamer 1%;
[0104] 2) Mix 7.5 parts of ramie fiber, 850 parts of gravel, 760 parts of sand, 545 parts of cement, 70 parts of fly ash, 103 parts of straw ash, 120 parts of silica fume, 5.3 part...
Embodiment 2
[0113] 1) Add 20 parts by mass of water-reducing agent and 41 parts by mass of nano-titanium / graphene oxide dispersion into two-thirds of the total water, which is recorded as mixed solution 1; 14 parts of shrinkage reducing agent and 3 parts of antifoaming agent are added to the water of one-third of the total water volume, which is recorded as mixed solution 2; 21.8 parts of carboxy-modified polyvinyl alcohol polymers are prepared for later use; the total water volume is 72 parts; Among them, the nano-titanium / graphene oxide dispersion is composed of 1.7 parts of graphene oxide powder and 0.5 parts of nano-TiO 2 Made; carboxy-modified polyvinyl alcohol polymer is prepared from raw materials according to mass percentage: carboxy-modified polyvinyl alcohol 38.7%, water 60%, polyacrylate defoamer 1.3%;
[0114] 2) Mix 7.2 parts of ramie fiber, 850 parts of gravel, 755 parts of sand, 547 parts of cement, 68 parts of fly ash, 102 parts of straw ash, 125 parts of silica fume, 5.4 ...
Embodiment 3
[0122] 1) Add 20 parts by mass of water-reducing agent and 44 parts by mass of nano-titanium / graphene oxide dispersion into two-thirds of the total water, which is recorded as mixed solution 1; 15 parts of shrinkage reducing agent and 2.9 parts of antifoaming agent are added to the water of one-third of the total water volume, which is recorded as mixed solution 2; 21.5 parts of carboxy-modified polyvinyl alcohol polymers are prepared for later use; the total water volume is 74 parts; Among them, the nano-titanium / graphene oxide dispersion is composed of 1.7 parts of graphene oxide powder and 0.4 parts of nano-TiO 2 Made; carboxy-modified polyvinyl alcohol polymer is prepared according to the mass percentage of raw materials: carboxy-modified polyvinyl alcohol 37%, water 62%, polyacrylate defoamer 1%;
[0123] 2) Mix 7.3 parts of ramie fiber, 855 parts of gravel, 760 parts of sand, 547 parts of cement, 73 parts of fly ash, 100 parts of straw ash, 130 parts of silica fume, 5.3 ...
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