Magnetized cement grinding aid mother liquor for building
A cement grinding aid, a technology for construction, applied in the field of construction processing aids, can solve the problems of unsatisfactory cement setting time and compressive strength, poor stability, reduced strength of cement concrete, etc., to achieve excellent flow performance, improve Product stability and the effect of improving compressive strength
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Embodiment 1
[0024] Make cement grinding aid based on following proportioning by weight:
[0025] First put 20 parts of polyols, 3 parts of calcium lignosulfonate and 1 part of 50% hydrochloric acid solution with a pH of 2 to 3 into the reactor for mixing, then add 3 parts of alkaline lignin into the reactor, Adjust the pH value of the mixture to 6, then add 3 parts of hydroxyethyl methyl cellulose ether and 3 parts of hydroxyethyl acrylate to the reaction kettle, and let it stand for 2 hours, and finally import the mixture after standing still from the reaction kettle for stirring tank, add 120 parts of magnetized water and 5 parts of sucrose monoester and stir. After stirring for 1 hour, the cement grinding aid mother liquor is prepared.
Embodiment 2
[0027] Make cement grinding aid based on following proportioning by weight:
[0028] First put 80 parts of polyols, 7 parts of calcium lignosulfonate and 4 parts of 50% sulfuric acid solution with a pH of 2 to 3 into the reactor for mixing, then add 7 parts of alkaline lignin into the reactor, Adjust the pH value of the mixture to 8, then add 7 parts of hydroxyethyl methyl cellulose ether and 7 parts of hydroxyethyl acrylate to the reaction kettle, and let it stand for 3 hours, and finally import the mixture after standing still from the reaction kettle for stirring tank, add 200 parts of magnetized water and 10 parts of sucrose monoester and stir, after stirring for 1.5 hours, the cement grinding aid is prepared.
Embodiment 3
[0030] Make cement grinding aid based on following proportioning by weight:
[0031] First put 50 parts of polyol, 5 parts of calcium lignosulfonate and 3 parts of 50% hydrochloric acid solution with a pH of 2 to 3 into the reactor for mixing, then add 4 parts of alkaline lignin into the reactor, Adjust the pH value of the mixture to 7, then add 4 parts of hydroxyethyl methyl cellulose ether and 5 parts of hydroxyethyl acrylate to the reactor, and let it stand for 2.5 hours, and finally import the mixture after standing Stir tank, add 160 parts of magnetized water and 8 parts of sucrose monoester and stir, after stirring for 1 hour, cement grinding aid is prepared.
[0032] The cement grinding aids prepared by equal weight embodiment 1, embodiment 2 and embodiment 3 are marked as the first group, the second group and the third group respectively, and the existing commercially available grinding aids of equal weight are marked as The fourth group, its formula is by mass ratio ...
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