Geo-polymer based marine concrete protective coating material and preparation method thereof
A protective coating and geopolymer technology, which is applied in the field of geopolymer-based marine concrete protective coating materials and its preparation, can solve the problems of residual stress cracking and long curing time of the coating, and achieve improved performance and constructability , short curing time and cost reduction effect
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[0028] Another aspect of the present invention provides a method for preparing the above-mentioned geopolymer-based marine concrete protective coating material, the preparation method comprising:
[0029] NaOH and Na with a solid content of 30-40% 2 SiO 3 Mix the aqueous solution evenly and control the Na 2 SiO 3 The modulus of the aqueous solution is 1.2-1.5M, and the A component is obtained;
[0030] Grinding and mixing calcined metakaolin, silica fume, ordinary Portland cement, nano-magnesia and rice husk ash to obtain a premix; mixing the premix, sisal fiber and modified waste natural rubber evenly, and then Mix well with silane coupling agent, silicone acrylic emulsion, water reducer and water to get component B.
[0031] As a preferred version, the grinding time is 10-20min; the time for mixing the premix, sisal fiber and modified waste natural rubber is 1-2min; The time is 1-2min.
[0032] As a preferred solution, during construction of the polymer-based marine co...
Embodiment 1
[0037] This embodiment provides a geopolymer-based marine concrete protective coating material, the specific preparation method is as follows:
[0038] NaOH and Na with a solid content of 35% 2 SiO 3 Mix the aqueous solution evenly and control the Na 2 SiO 3 The modulus of the aqueous solution is 1.2M to obtain a compound base activator; take 15 parts of the compound base activator as component A;
[0039] 45 parts of calcined metakaolin calcined at 650°C for 4 hours, 0.1 part of silica fume, 1 part of No. 32.5 ordinary Portland cement, 0.1 part of nano-magnesium oxide and 1 part of rice husk ash were ground in a planetary ball mill for 15 minutes to obtain a premixed material, spare; add premix, 0.1 part of sisal fiber and 0.3 part of modified waste natural rubber into the concrete mixer and stir for 60 seconds, then add 0.5 part of silane coupling agent KH550, 5 parts of silicone acrylic emulsion, 0.1 part of Aqua and 2 parts of water, continue to stir for 120s to obtain...
Embodiment 2
[0042] This embodiment provides a geopolymer-based marine concrete protective coating material, the specific preparation method is as follows:
[0043] NaOH and Na with a solid content of 35% 2 SiO 3 Mix the aqueous solution evenly and control the Na 2 SiO 3 The modulus of the aqueous solution is 1.5M to obtain a compound base activator; take 20 parts of the compound base activator as component A;
[0044] 45 parts of calcined metakaolin calcined at 650°C for 4 hours, 0.1 part of silica fume, 1 part of No. 32.5 ordinary Portland cement, 0.3 part of nano-magnesium oxide and 1 part of rice husk ash were ground in a planetary ball mill for 15 minutes to obtain a premixed material, spare; add premix, 0.1 part of sisal fiber and 0.3 part of modified waste natural rubber into the concrete mixer and stir for 60 seconds, then add 0.5 part of silane coupling agent KH550, 8 parts of silicone acrylic emulsion, 0.1 part of Aqua and 2 parts of water, continue to stir for 120s to obtain...
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