Concrete retarder and preparation method thereof
A concrete and retarder technology, which is applied in the field of building materials, can solve the problems of small reduction, lower reaction heat, and affect the anti-scouring performance of concrete, and achieve the effects of inhibiting hydration, improving compatibility, and good strength
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Embodiment 1
[0024] A concrete retarder, made of the following raw materials: 3 parts of modified microcrystalline cellulose, 3 parts of acrylic acid, 6 parts of modified glass fiber, 10 parts of borax, 6 parts of polyvinyl chloride resin, 4 parts of anhydrous sodium sulfate , 3 parts of quartz sand, 12 parts of sodium tripolyphosphate, 1 part of carboxymethyl cellulose.
[0025] The preparation of the modified microcrystalline cellulose is as follows: adding the microcrystalline cellulose to an 80% ethanol solution whose mass is 10 times that of the microcrystalline cellulose, adding sodium hydroxide with 10% mass of the microcrystalline cellulose and stirring at 45-50°C for 6 hours After cooling, add 20% carboxymethyl cellulose of microcrystalline cellulose, and stir at 30-35°C for 2 hours to obtain a modified coarse material; dry the modified coarse material to obtain a modified microcrystalline Crystalline cellulose.
[0026] The preparation of the modified glass fiber is as follows: ...
Embodiment 2
[0034] A concrete retarder, made from the following raw materials: 5 parts of modified microcrystalline cellulose, 2 parts of acrylic acid, 6.5 parts of modified glass fiber, 6 parts of borax, 8 parts of polyvinyl chloride resin, 3 parts of anhydrous sodium sulfate , 4 parts of quartz sand, 10 parts of sodium tripolyphosphate, 1 part of carboxymethyl cellulose.
[0035] The preparation of the modified microcrystalline cellulose is as follows: adding the microcrystalline cellulose to an 80% ethanol solution whose mass is 10 times that of the microcrystalline cellulose, adding sodium hydroxide with 10% mass of the microcrystalline cellulose and stirring at 45-50°C for 6 hours After cooling, add 20% carboxymethyl cellulose of microcrystalline cellulose, and stir at 30-35°C for 2 hours to obtain a modified coarse material; dry the modified coarse material to obtain a modified microcrystalline Crystalline cellulose.
[0036] The preparation of the modified glass fiber is as follow...
Embodiment 3
[0044] A concrete retarder, made of the following raw materials: 6 parts of modified microcrystalline cellulose, 1 part of acrylic acid, 8 parts of modified glass fiber, 5 parts of borax, 10 parts of polyvinyl chloride resin, 2 parts of anhydrous sodium sulfate , 5 parts of quartz sand, 8 parts of sodium tripolyphosphate, 3 parts of carboxymethyl cellulose.
[0045] The preparation of the modified microcrystalline cellulose is as follows: adding the microcrystalline cellulose to an 80% ethanol solution whose mass is 10 times that of the microcrystalline cellulose, adding sodium hydroxide with 10% mass of the microcrystalline cellulose and stirring at 45-50°C for 6 hours After cooling, add 20% carboxymethyl cellulose of microcrystalline cellulose, and stir at 30-35°C for 2 hours to obtain a modified coarse material; dry the modified coarse material to obtain a modified microcrystalline Crystalline cellulose.
[0046] The preparation of the modified glass fiber is as follows: m...
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