Fiber-reinforced concrete material and preparation method thereof
A fiber reinforced, fiber material technology, applied in the field of fiber reinforced concrete materials and their preparation, can solve the problems of poor impact strength, short service life, poor overall strength, etc., and achieve good impact strength, uniform distribution, and bending strength. added effect
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Embodiment 1
[0022] A fiber-reinforced concrete material in this embodiment is made of the following raw materials in parts by weight: 30 parts of modified bentonite, 10 parts of layered hypophosphite, 40 parts of Portland cement, 15 parts of fiber material, 10 parts of steel fiber, boric acid 5 parts, 5 parts of borax, 2 parts of enhancer, 2 parts of organic thickener, 80 parts of water;
[0023] Wherein, the fiber material is a polypropylene fiber with a length of 3 mm; the preparation method of modified bentonite comprises the following steps: S1, placing 2 parts of bentonite and 160 mL of absolute ethanol in a three-necked flask, and placing the three-necked flask in a 70° C. water bath Stir for 2 hours; S2, dissolve 2 parts of modifiers in deionized water at 60°C and pour them into the three-necked flask in step S1, adjust the pH of the solution to 3 with dilute nitric acid, stir for 5 hours, cool, filter, and then use 45% anhydrous Washing with water ethanol solution and deionized wa...
Embodiment 2
[0027] A fiber-reinforced concrete material in this embodiment is made of the following raw materials in parts by weight: 60 parts of modified bentonite, 26 parts of layered hypophosphite, 80 parts of Portland cement, 30 parts of fiber material, 18 parts of steel fiber, boric acid 10 parts, 10 parts of borax, 5 parts of enhancer, 6 parts of organic thickener, 160 parts of water;
[0028] Wherein, the fiber material is a mixture of polypropylene fiber, glass fiber and polyvinyl alcohol fiber with a length of 10 mm; the preparation method of modified bentonite comprises the following steps: S1, 4 parts of bentonite and 200 mL of absolute ethanol are placed in a three-necked flask , put the three-necked flask in an 85°C water bath and stir for 3 hours; S2, dissolve 6 parts of the modifier in 70°C deionized water and pour it into the three-necked flask in step S1, adjust the pH of the solution to 4 with dilute nitric acid, and then stir 6.5h, cooled, filtered, washed with 45% abso...
Embodiment 3
[0032] A fiber-reinforced concrete material in this embodiment is made of the following raw materials in parts by weight: 45 parts of modified bentonite, 18 parts of layered hypophosphite, 60 parts of Portland cement, 23 parts of fiber material, 14 parts of steel fiber, boric acid 7 parts, 7 parts of borax, 3.5 parts of enhancer, 4 parts of organic thickener, 120 parts of water;
[0033]Wherein, the fiber material is a mixture of polypropylene fiber, glass fiber, polyvinyl alcohol fiber and polyethylene fiber with a length of 6 mm; the preparation method of modified bentonite comprises the following steps: S1, mixing 3 parts of bentonite and 180 mL of absolute ethanol Place in a three-necked flask, and place the three-necked flask in a 78°C water bath to stir for 2.5 hours; S2, dissolve 4 parts of the modifier in 65°C deionized water and pour it into the three-necked flask in step S1, and adjust the pH of the solution with dilute nitric acid 4, then stirred for 6 hours, cooled...
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