Preformed material for post-tensioned prestressing pipeline vacuum grouting or mudjacking and preparation method thereof
A technology of prestressed pipeline and post-tensioning method, which is applied in the fields of clay preparation equipment, chemical instruments and methods, solid waste management, etc. Full state and other problems, to achieve the effect of good pumpability, low cost and good fluidity
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Embodiment 1
[0021] The following is calculated according to the weight percentage of each component in the prefabricated material:
[0022] Cement 76% U-shaped high-efficiency expansion agent 8%
[0023] Wollastonite 10% (particle size 0.05-60μm) Kaolin 6% (particle size 0.05-60μm)
[0024] Molasses retarder 0.4% Sodium alkylsulfonate air-entraining agent 0.015%
[0025] Calcium Lignosulfonate Rust Inhibitor 0.5% Melamine Water Reducer 0.3%
[0026] Methylcellulose 0.06%
[0027] Mix the above raw materials to obtain the prefabricated material, then put the prefabricated material and water into the mixer according to the water-cement ratio of 0.3 and stir, the speed of the mixer is not lower than 1000r / min, and the linear speed of the paddle is limited within 15m / s , and stirred for 5 minutes to prepare the grouting material.
[0028] The above-mentioned grouting material uses a funnel viscometer to measure the outflow time of 1725mL slurry. The initial fluidity is 18s, and the fluid...
Embodiment 2
[0030] The following is calculated according to the weight percentage of each component in the prefabricated material:
[0031] Cement 90% Sulphoaluminate expansion agent 6%
[0032] 2% blast furnace slag (0.05-60μm particle size) 2% fly ash (0.05-60μm particle size)
[0033] Molasses retarder 0.4% Rosin thermal polymer air-entraining agent 0.015%
[0034] Calcium nitrite rust inhibitor 2% Naphthalene superplasticizer 0.37%
[0035] Methylcellulose 0.06%
[0036] Mix the above raw materials to obtain the prefabricated material, then put the prefabricated material and water into the mixer according to the ratio of water-cement ratio 0.32, the speed of the mixer is not lower than 1000r / min, and the linear speed of the paddle is limited within 15m / s , and stirred for 5 minutes to prepare the grouting material.
[0037] The above-mentioned grouting material uses a funnel viscometer to measure the outflow time of 1725mL slurry. The initial fluidity is 20s, and the 30min fluidi...
Embodiment 3
[0039] The following is calculated according to the weight percentage of each component in the prefabricated material:
[0040] Cement 85% Alunite expansion agent 6%
[0041] Coal gangue 4% (particle size 0.05-60μm) Calcite 5% (particle size 0.05-60μm)
[0042] Hydroxycarboxylic acid and its salt retarder 0.1% Sodium alkylsulfonate air-entraining agent 0.01%
[0043] Amino alcohol rust inhibitor 0.4% Polycarboxylate water reducer 0.4%
[0044] Polyacrylamide 0.03% (molecular weight 0.5 million to 10 million)
[0045] Mix the above raw materials to obtain the prefabricated material, then put the prefabricated material and water into the mixer according to the ratio of water-cement ratio 0.26, the speed of the mixer is not lower than 1000r / min, and the linear speed of the paddle is limited within 15m / s , and stirred for 5 minutes to prepare the grouting material.
[0046] The above-mentioned grouting material uses a funnel viscometer to measure the outflow time of 1725mL slurr...
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