A water-retaining and viscosity-increasing admixture for wet shotcrete
A wet sprayed concrete and admixture technology, applied in the field of building materials, can solve the problems that the wet sprayed concrete cannot meet the high water retention and high viscosity, the effect of concrete mechanical properties is not significant, and the mechanical properties of concrete are affected, so as to achieve stable spraying quality, The effect of ensuring health and safety and improving mechanical properties
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Embodiment 1
[0028] A water-retaining and viscosity-increasing admixture for wet shotcrete, which consists of the following components by weight: 35 parts of sodium polyacrylate, 55 parts of hydroxypropyl methylcellulose, and 5 parts of polyvinyl alcohol. When stirring the cement slurry, the tackifier is directly introduced into the cement slurry and stirred evenly together. Tackifier accounts for 5% by weight of cement in concrete.
Embodiment 2
[0030] A water-retaining and viscosity-increasing admixture for wet shotcrete, which consists of the following components by weight: 45 parts of sodium polyacrylate, 45 parts of hydroxypropyl methylcellulose, and 12 parts of polyvinyl alcohol. When stirring the cement slurry, the tackifier is directly introduced into the cement slurry and stirred evenly together. Tackifier accounts for 2% by weight of cement in concrete.
Embodiment 3
[0032] A water-retaining and viscosity-increasing admixture for wet shotcrete, consisting of the following components by weight: sodium polyacrylate: 42 parts, hydroxypropyl methylcellulose 50 parts, polyvinyl alcohol 9 parts, sodium carbonate 4 parts Parts, 2 parts of calcium carbonate. When stirring the cement slurry, the tackifier is directly introduced into the cement slurry and stirred evenly together. Tackifier accounts for 6% by weight of cement in concrete.
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