Internal curing material of high-performance concrete and preparation method thereof
A technology of high-performance concrete and super-absorbent materials, applied in the field of building materials, to achieve the effect of strong applicability, no impact on strength and durability, and convenient use
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Embodiment 1
[0056] A high-performance concrete internal curing material, the internal curing material includes the following components and contents (parts by mass):
[0057] Expander 100;
[0058] Organic super absorbent material 1.25;
[0059] Inorganic water-absorbing material 10;
[0060] Water retaining agent 0.25;
[0061] Filler 10.
[0062] A method for preparing a high-performance concrete interior curing material, the method comprising the following steps:
[0063] (1) Add 6wt% acrylic acid to the three-necked flask under ice-water bath conditions, and drop 30wt% mass concentration of 25% sodium hydroxide solution under stirring, after that, add 18wt% acrylamide and 20wt% mass concentration of 0.1 % N, N'-methylenebisacrylamide, stir evenly, put the mixed solution in a constant temperature water bath at 35°C, keep it under nitrogen for 2min, add 26wt% ammonium persulfate-sodium sulfite with a mass concentration of 0.5%, and stir After reacting for a period of time, the reac...
Embodiment 2
[0066] A high-performance concrete internal curing material, the internal curing material includes the following components and contents (parts by mass):
[0067] Expander 100;
[0068] Organic superabsorbent material 2.5;
[0069] Inorganic water-absorbing material 10;
[0070] Water retaining agent 0.25;
[0071] Filler 10.
[0072] A method for preparing a high-performance concrete interior curing material, the method comprising the following steps:
[0073] (1) Add 6wt% acrylic acid to the three-necked flask under ice-water bath conditions, and drop 30wt% mass concentration of 25% sodium hydroxide solution under stirring, after that, add 18wt% acrylamide and 20wt% mass concentration of 0.1 % N, N'-methylenebisacrylamide, stir evenly, put the mixed solution in a constant temperature water bath at 35°C, keep it under nitrogen for 2min, add 26wt% ammonium persulfate-sodium sulfite with a mass concentration of 0.5%, and stir After reacting for a period of time, the reacti...
Embodiment 3
[0076] A high-performance concrete internal curing material, the internal curing material includes the following components and contents (parts by mass):
[0077] Expander 100;
[0078] Organic superabsorbent material 2.5;
[0079] Inorganic water-absorbing material 10;
[0080] Water retaining agent 0.375;
[0081] Filler 10.
[0082] A method for preparing a high-performance concrete interior curing material, the method comprising the following steps:
[0083] (1) Add 6wt% acrylic acid to the three-necked flask under ice-water bath conditions, and drop 30wt% mass concentration of 25% sodium hydroxide solution under stirring, after that, add 18wt% acrylamide and 20wt% mass concentration of 0.1 % N, N'-methylenebisacrylamide, stir evenly, put the mixed solution in a constant temperature water bath at 35°C, keep it under nitrogen for 2min, add 26wt% ammonium persulfate-sodium sulfite with a mass concentration of 0.5%, and stir After reacting for a period of time, the react...
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