Impermeable concrete and preparation method thereof
A technology of impermeable concrete and mixed solution, which is applied in the field of concrete, and can solve problems such as adverse effects on concrete strength and poor foam stability, and achieve the effects of improved impermeability, low strength, and high impermeability
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[0044] Preparation Example 1
[0045] The air-entraining agent of Preparation Example 1, the raw materials and the amounts of the raw materials are as shown in Table 1, and the preparation steps are:
[0046] 1) Add diethanolamine to DMF, stir evenly, then add maleic anhydride with the same molar amount as diethanolamine, stir and react for 5h at 20°C to obtain mixed solution A;
[0047] 2) Add triethanolamine to mixed solution A, then add toluenesulfonic acid and toluene, and stir and react for 8h at 110°C to obtain mixed solution B;
[0048] 3) After heating the rosin to 100°C, stir for 5h;
[0049] 4) Add the heat-treated rosin in step 3) to the mixed solution B, and then stir and react for 9 hours at a temperature of 100°C to obtain the mixed solution C;
[0050] 5) Distill the mixture C under reduced pressure to obtain the air-entraining agent used in this application.
[0051] Table 1 The reactants of the air-entraining agents of Preparation Examples 1-3 and their dosage (kg)
[0052...
Example Embodiment
[0053] Preparation Example 2
[0054] For the air-entraining agent of Preparation Example 2, the raw materials and the amounts of the raw materials are as shown in Table 1. The preparation steps are:
[0055] 1) Add diethanolamine to DMF, stir evenly, then add maleic anhydride with the same molar amount as diethanolamine, stir and react for 4h at 25°C to obtain mixed solution A;
[0056] 2) Add triethanolamine to the mixture A, then add toluenesulfonic acid and toluene, and stir and react for 7 hours at 115°C to obtain the mixture B;
[0057] 3) After heating the rosin to 110°C, stir for 5h;
[0058] 4) Add the heat-treated rosin in step 3) to the mixed solution B, and then stir and react for 8 hours at a temperature of 110°C to obtain the mixed solution C;
[0059] 5) Distill the mixture C under reduced pressure to obtain the air-entraining agent used in this application.
Example Embodiment
[0060] Preparation Example 3
[0061] For the air-entraining agent of Preparation Example 3, the raw materials and the amounts of the raw materials are as shown in Table 1. The preparation steps are:
[0062] 1) Add diethanolamine to DMF, stir evenly, then add maleic anhydride with the same molar amount as diethanolamine, stir and react for 3h at 30°C to obtain mixed solution A;
[0063] 2) Add triethanolamine to mixed solution A, then add toluenesulfonic acid and toluene, and stir and react for 6h at 120°C to obtain mixed solution B;
[0064] 3) After heating the rosin to 120°C, stir for 4h;
[0065] 4) Add the heat-treated rosin in step 3) to the mixed solution B, and then stir and react for 7 hours at a temperature of 120°C to obtain the mixed solution C;
[0066] 5) Distill the mixture C under reduced pressure to obtain the air-entraining agent used in this application.
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