Foaming agent for preparation of Water-retaining foam concrete
A technology of foam concrete and foam agent, which is applied in the field of civil engineering, can solve the problems of unsatisfactory foam stability, uniformity and dispersibility, lack of foam agent for water-retaining foam concrete, and poor cement bonding, so as to ensure the follow-up water Effects of chemicalization, enhanced interaction, and increased mechanical strength
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[0019] The foaming agent for preparing water-retaining foamed concrete of the present invention is composed of:
[0020]
[0021] The anionic surfactants are: alkyl sulfonates, alkyl sulfates, α-alkenyl sulfonates, soaps with carbon chain lengths of 8-20, and carbon chain lengths of 12-18 and EO adduct number Fatty alcohol ether sulfates of 2-9, fatty alcohol ether carboxylates with carbon chain length of 12-15 and EO addition number of 3-9, fatty acid methyl ester sulfonates with carbon chain length of 10-18 One or more of them.
[0022] The foam stabilizer is one or more of triethanolamine, gum arabic, gelatin, and sodium polymethyl cellulose.
[0023] The water retaining agent is: polyvinyl alcohol 1799, polyvinyl alcohol 2488, hydroxypropyl methyl cellulose, polyacrylate, polyacrylamide, sodium polyacrylate, potassium polyacrylate, and ammonium polyacrylate.
[0024] The preparation method of the foaming agent of the present invention is as follows:
[0025] The above-mentioned an...
Example Embodiment
[0029] Example 1:
[0030] The foaming agent of the present invention can be obtained by compounding α-alkenyl sulfonate, sodium lauryl polyoxyethylene ether sulfate, triethanolamine, polyacrylamide, and polyvinyl alcohol 1799, and its weight percentage:
[0031]
[0032] The above-mentioned anionic surfactant, foam stabilizer, water-retaining agent, and water are added to the reaction vessel according to the weight percentages described in Example 1, and the temperature is adjusted to 50-90° C. and the reaction time is 1 to 3 hours to form a uniform transparent liquid.
[0033] Using the foaming agent of this invention to prepare water-retaining foamed concrete, the specific operation is as follows:
[0034] 1) Portland cement is used as a cementing material, mixed with an appropriate amount of fly ash, and mixed and stirred uniformly according to the mass ratio of cement: fly ash: water = 1:0.1-1:0.4-0.6 to prepare cement concrete slurry.
[0035] 2) The foaming agent of the invention...
Example Embodiment
[0036] Example 2:
[0037]
[0038] The above-mentioned anionic surfactant, foam stabilizer, water-retaining agent, and water are added to the reaction vessel according to the weight percentages described in Example 2, and the temperature is adjusted to 50-90°C, and the reaction time is 1 to 3 hours to form a uniform transparent liquid.
[0039] Using the foaming agent of this invention to prepare water-retaining foamed concrete, the specific operation is as follows:
[0040] 1) Portland cement is used as a cementing material, mixed with an appropriate amount of fly ash, and mixed and stirred uniformly according to the mass ratio of cement: fly ash: water = 1:0.1-1:0.4-0.6 to prepare cement concrete slurry.
[0041] 2) The foaming agent of the invention is diluted with water by 50-70 times and then prepared into a foam with a foaming machine. The foam is mixed into the above-mentioned mixed cement concrete slurry, mixed evenly and poured to form a water-retaining foamed concrete.
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