A kind of reinforced silica fume concrete and preparation method thereof
A concrete and reinforced technology, applied in the field of building materials, can solve the problems of complex and simple reinforced silica fume concrete of concrete materials, and achieve the effects of good pumpability, improved strength, and reduced production costs
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[0063] Synthesis Example Preparation of Admixture
[0064] The first step of material preparation: 0.75kg of L-ascorbic acid and 156kg of water are fully stirred to prepare solution A; 12.25kg of maleic anhydride, 29kg of hydroxyethyl acrylate, 12.5kg of polyethylene glycol diester, dimethyl diallyl Ammonium chloride 10.10kg, mercaptopropionic acid 0.66kg and water 156kg were fully stirred to prepare solution B.
[0065] The second step of polymerization: Add 75kg of isobutenol polyoxyethylene ether, 75kg of isopentenol polyoxyethylene ether and 200kg of water into a glass reactor with a thermometer and an electric stirrer, stir until all are dissolved, and add 30% super Hydrogen oxide 1.07kg, stir evenly, control the initial temperature between 20-30°C and start adding material A and B dropwise; add material A dropwise for 2h, add material B dropwise for 1.5h, keep warm for 1.5h after the dropwise addition, and finally use hydrogen The potassium oxide aqueous solution adjust...
Embodiment 1
[0067] (1) Prepare the concrete raw materials of the following raw materials for use:
[0068] 300 parts of cement, 30 parts of silica fume, 50 parts of fiber powder, 700 parts of sand, 1000 parts of stone, 150 parts of water, and 1.6 parts of admixture, wherein the fiber powder is a monofilament with a weight ratio of 2:15:1 and a diameter of 6μm non-alkali glass fiber is a mixture of glass fiber, high-strength-high-modulus carbon fiber and polycarbonate fiber with a single filament diameter of 18μm, and the gradation of the sand is 5-2.5mm sieve 13.5, 2.5-1.25mm sieve Sieve 12.8, 1.25-0.63mm sieve 26.8, 0.63-0.315mm sieve 19.4, 0.315-0.16mm sieve 21.4, 0.16-0.08mm sieve 4.2, sieve bottom 1.9; River sand and artificial sand are mixed. According to the formula calculation, it can be seen that the fineness modulus of the sand is 3.2;
[0069] (2) Add the admixture to the water and stir evenly to obtain the admixture mixture, put sand, stone, 3 / 4 admixture mixture into the mixe...
Embodiment 2
[0072] (1) Prepare the concrete raw materials of the following raw materials for use:
[0073] 300 parts of cement, 30 parts of silica fume, 50 parts of fiber powder, 700 parts of sand, 1000 parts of stone, 150 parts of water, and 1.6 parts of admixture, wherein the fiber powder is a monofilament with a weight ratio of 3:15:2 and a diameter of 6μm non-alkali glass fiber is a mixture of glass fiber, high-strength-high-modulus carbon fiber and polycarbonate fiber with a single diameter of 18μm, and the gradation of the sand is 5-2.5mm sub-meter sieve 14.8, 2.5-1.25mm sub-meter Sieve 12.6, 1.25-0.63mm sieve 28.1, 0.63-0.315mm sieve 26.5, 0.315-0.16mm sieve 13.2, 0.16-0.08mm sieve 3.2, sieve bottom 1.6; River sand and artificial sand are mixed, and the fineness modulus of the sand is 3.3;
[0074] (2) Add the admixture to the water and stir evenly to obtain the admixture mixture, put sand, stone, 3 / 4 admixture mixture into the mixer and stir for 1 min, then put in cement, silica ...
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