Composite cement admixture
A technology of compound cement and admixture, applied in the field of compound cement admixture, can solve the problems of unstable performance of grinding aid, decrease of cement contribution rate, influence of cement performance, etc. than the effect of science
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Embodiment 1
[0022] A composite cement admixture is prepared from the following raw materials in parts by weight: 20 parts of composite alcohol amine components, 10 parts of isooctanyl phosphate, 4 parts of molasses, 4 parts of emulsifying dispersant, 5 parts of triethylene glycol, 3 parts of promotor and 50 parts of water; The complex alcohol amine component is prepared by the following steps:
[0023] 1) Sodium chloroacetate is completely dissolved in deionized water at 60°C, and kept at a constant temperature;
[0024] 2) Add aqueous sodium hydroxide solution to maintain the pH value of the solution system at 11-12, control the temperature of the solution system to 60°C, then add triethanolamine; the molar ratio of sodium chloroacetate, deionized water, sodium hydroxide and triethanolamine The ratio is 1:3:1:1; stir at 60°C for 1 hour to obtain complex alcohol amine components.
[0025] The concentration of the sodium hydroxide aqueous solution is 25%.
[0026] The adding method of tr...
Embodiment 2
[0035] A composite cement admixture is prepared from the following raw materials in parts by weight: 25 parts of composite alcohol amine components, 13 parts of isooctanyl phosphate, 6 parts of molasses, 6 parts of emulsifying dispersant, 8 parts of triethylene glycol, 4 parts of promotor and 60 parts of water; The complex alcohol amine component is prepared by the following steps:
[0036] 1) Sodium chloroacetate is completely dissolved in deionized water at 60°C, and kept at a constant temperature;
[0037] 2) Add aqueous sodium hydroxide solution to maintain the pH value of the solution system at 11-12, control the temperature of the solution system to 60°C, then add triethanolamine; the molar ratio of sodium chloroacetate, deionized water, sodium hydroxide and triethanolamine The ratio is 1:3:1:1; stir at 60°C for 1 hour to obtain complex alcohol amine components.
[0038] The concentration of the sodium hydroxide aqueous solution is 25%.
[0039] The adding method of tr...
Embodiment 3
[0048] A composite cement admixture is prepared from the following raw materials in parts by weight: 30 parts of composite alcohol amine components, 15 parts of isooctyl alcohol phosphate, 8 parts of molasses, 8 parts of emulsifying dispersant, 10 parts of triethylene glycol, 5 parts of promotor and 70 parts of water; The complex alcohol amine component is prepared by the following steps:
[0049]1) Sodium chloroacetate is completely dissolved in deionized water at 60°C, and kept at a constant temperature;
[0050] 2) Add aqueous sodium hydroxide solution to maintain the pH value of the solution system at 11-12, control the temperature of the solution system to 60°C, then add triethanolamine; the molar ratio of sodium chloroacetate, deionized water, sodium hydroxide and triethanolamine The ratio is 1:3:1:1; stir at 60°C for 1 hour to obtain complex alcohol amine components.
[0051] The concentration of the sodium hydroxide aqueous solution is 25%.
[0052] The adding method...
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