A high-permeability micro-expansion type semi-rigid base curing agent and its preparation method
A semi-rigid base and micro-expansion technology, which is applied in the field of semi-rigid base curing agent, high-permeability micro-expansion semi-rigid base curing agent and its preparation, can solve the problem of uncontrollable internal cracks, stable development of strength, homogeneity of semi-rigid base In order to achieve the effects of good film formation and water retention, stable development of strength in the later stage, and prevention of water evaporation loss
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Embodiment 1
[0037] This embodiment provides a high-permeability micro-expansion type semi-rigid base curing agent, which consists of the following raw materials in terms of weight fraction: 0.2% polyacrylamide, 25% rice husk ash, 6% hydrotalcite-like, 3% water-based Swelling agent, 1% penetrating agent, 5% sodium methyl siliconate, 1% nano calcium carbonate, 3% ethyl acetate, 3% polysiloxane, and the balance is 52.8% water. The penetrating agent is fatty alcohol polyoxyethylene ether.
[0038] The preparation method of the above-mentioned highly permeable micro-expansion type semi-rigid base curing agent comprises the following steps:
[0039] Step 1, taking the above-mentioned raw materials by mass;
[0040] Step 2, mix nano-calcium carbonate, sodium methyl siliconate and penetrating agent in a beaker, and stir evenly with a glass rod to obtain mixture A; stir and mix polyacrylamide and 50% of the water in the formula in a beaker to obtain Mixture B; miscible polysiloxane and ethyl ace...
Embodiment 2
[0048] This example provides a high-permeability micro-expansion type semi-rigid base curing agent, which consists of the following raw materials in terms of weight fraction: 0.8% polyacrylamide, 17% rice husk ash, 8% hydrotalcite-like, 2% water-based expansion agent, 1.5% penetrant, 2% sodium methyl siliconate, 4% nano calcium carbonate, 5% ethyl acetate, 1.5% polysiloxane, and the balance is 58.2% water. The penetrating agent is fatty alcohol polyoxyethylene ether.
[0049] The preparation method of the curing agent of this embodiment is the same as the steps of Example 1.
[0050] The effective water retention rate and semi-rigid Unconfined compressive strength test of base. Among them, the spraying (smearing) amount of curing agent is 200g / m 2 . After testing, the water retention rate of the curing agent is 92%, the 7d unconfined compressive strength of the semi-rigid base is 110% of the reference strength, and the 28d unconfined compressive strength is 119% of the ref...
Embodiment 3
[0052] This example provides a high-permeability micro-expansion type semi-rigid base curing agent, which consists of the following raw materials in terms of weight fraction: 0.5% polyacrylamide, 20% rice husk ash, 7% hydrotalcite-like, 2.5% water-based swelling agent, 1.3% penetrant, 3% sodium methyl siliconate, 2% nano calcium carbonate, 4% ethyl acetate, 2.5% polysiloxane, and the balance is 57.2% water. The penetrating agent is fatty alcohol polyoxyethylene ether.
[0053] The preparation method of the curing agent of this embodiment is the same as the steps of Example 1.
[0054] The effective water retention rate and semi-rigid Unconfined compressive strength test of base. Among them, the spraying (smearing) amount of curing agent is 200g / m 2 . After testing, the water retention rate of the curing agent is 96%, the 7d unconfined compressive strength of the semi-rigid base is 115% of the reference strength, and the 28d unconfined compressive strength is 127% of the re...
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