Duct grouting slurry with low water-binder ratio and preparation method thereof
A technology for grouting and grouting of ducts, applied in the field of grouting and its preparation, can solve the problems of cement instability affecting project quality, difficulty in meeting standard requirements, affecting construction period, etc., and achieving filling degree and volume stability. Good, the effect of improving the strength guarantee rate and reducing labor costs
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[0024] According to CN201110433678.5, the preparation method of this high-performance water reducing agent HL-8010 comprises the following steps:
[0025] (1) add deionized water to the reactor, then add 63~82 parts by weight, preferably 70~80 parts by weight ether macromonomers, be mixed with the solution of 55~65 % by weight, be warming up to 50~80 °C, preferably 60-70 °C, generally at 60 °C to make it completely dissolved;
[0026] (2) after all the materials in the reaction kettle are dissolved, add 2-10% of the total monomer weight, preferably 4-6% of the aqueous peroxide solution in the reaction kettle, and the aqueous peroxide solution is a concentration of 2% of hydrogen peroxide;
[0027] (3) 6-15 parts by weight, preferably 9-11 parts by weight of small molecular monomers and chain transfer agent are prepared into a solution of 20-30% by weight with deionized water as material A, wherein the chain transfer agent is the small molecular weight 3 to 5% of the weight o...
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[0048] Example 1 (ordinary channel press slurry)
[0049] The parts by weight of each component are as follows:
[0050]
[0051]
Example Embodiment
[0052] Example 2 (plastic-preserving channel press slurry)
[0053] The parts by weight of each component are as follows:
[0054]
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