Chlorine-free type high-strength high-performance sprayed concrete accelerator
A sprayed concrete, high-performance technology, applied in the field of building materials, can solve the problems of uneven addition of powder accelerator and large dust
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[0024] Example 1
[0025] High-strength, high-performance, chlorine-free liquid accelerator is based on sodium aluminate 10.0% (weight percentage, the same below), potassium hydroxide 7.0%, potassium carbonate 12.0%, triethanolamine 2.5%, hydroxypropyl methylcellulose 0.001%, water 68.499% formulated. Adding 6.5% of the cement weight of the accelerator can make the initial setting time of the cement paste with a water-cement ratio of 0.4 be 3min and the final setting time of 7min, which can make the compressive strength of 1:2.5 cement mortar reach 16.5MPa, the 28-day compressive strength ratio exceeds 80%.
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[0026] Example 2
[0027] High-strength, high-performance, chlorine-free liquid accelerator is based on sodium aluminate 10.0% (weight percentage, the same below), sodium hydroxide 5.0%, potassium carbonate 8.0%, triethanolamine 4.0%, hydroxypropyl methylcellulose 0.002%, water 72.998% formulated. Adding 7.5% of the cement weight of this accelerator can make the initial setting time of the cement paste with a water-cement ratio of 0.4 be 2min, and the final setting time is 5min, and the compressive strength of 1:2.5 cement mortar can reach 15.3MPa, the 28-day compressive strength ratio exceeds 80%.
Example Embodiment
[0028] Example 3
[0029] High-strength, high-performance, chlorine-free liquid quick-setting agent is based on sodium aluminate 10.0% (weight percentage, the same below), sodium hydroxide 5.0%, potassium carbonate 5.0%, sodium carbonate 2.0%, triethanolamine 4.0%, hydroxypropyl methyl fiber It is formulated with 0.002% vegetarian and 73.998% water. The addition of 7.0% of the cement weight of the accelerator can make the initial setting time of the cement paste with a water-cement ratio of 0.4 be 3min, and the final setting time is 6min, and the compressive strength of 1:2.5 cement mortar can reach 15.7MPa, the 28-day compressive strength ratio exceeds 80%.
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