Geopolymer coating material for marine concrete protection
A polymer coating, marine concrete technology, applied in cement production and other directions, can solve the problem of insufficient mitigation effect, and achieve the effects of eliminating air bubbles, improving rheological properties, and enhancing anti-drying shrinkage cracking performance.
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Embodiment 1
[0028] A geopolymer coating material for marine concrete protection comprises the following components by weight fraction: 50 parts of slag (particle size ≤ 325 mesh), 50 parts of fly ash (particle size ≤ 325 mesh), 10 parts of NaOH, natural sand Sand (particle size ≤ 2.36mm, mud content less than 0.5%) 50 parts, ethylene / vinyl acetate copolymer 5 parts, PP fiber (length ≤ 10mm) 0.2 parts, CaO-based expansion agent 3 parts, polycarboxylic acid system 0.5 parts of water reducer, 0.5 parts of sodium bentonite, 0.5 parts of isobutyltriethoxysilane, 0.2 parts of octanol, and 50 parts of water.
[0029] The preparation method is as follows: 1) Add slag, fly ash, CaO-based expansion agent and PP fiber into the high-speed mixer, and stir for 5 minutes (rotation speed 1000rpm) to disperse the fibers evenly; 2) Add water, NaOH, polycarboxylate into the high-speed mixer Acid-based water reducer and sodium bentonite, stirring (speed 600rpm), after the alkali activator, water reducer is d...
Embodiment 2
[0032] A geopolymer coating material for marine concrete protection comprises the following components by weight fraction: 80 parts of slag (particle size≤325 mesh), 20 parts of metakaolin (particle size≤325 mesh), Na 2 O 1.2SiO 2 15 parts, 80 parts of artificial sand (particle size ≤ 2.36mm, mud content less than 0.5%), 8 parts of vinyl acetate / ethylene tertiary carbonic acid copolymer, 0.5 parts of PVA fiber (length ≤ 10mm), 5 parts of MgO-based expansion agent , 2 parts of polycarboxylic acid-based water reducer, 1 part of lithium bentonite, 1 part of isooctyltriethoxysilane, 0.5 parts of octanol, and 30 parts of water.
[0033] The preparation method is as follows: 1) Add slag, metakaolin, MgO-based expansion agent and PVA fiber into a high-speed mixer, and stir for 10 minutes (rotating speed 600rpm) to disperse the fibers evenly; 2) Add water, Na 2 O 1.2SiO 2 , polycarboxylate water-reducer and lithium-based bentonite, stirring (rotating speed 1000rpm), after the alkal...
Embodiment 3
[0036] A geopolymer coating material for marine concrete protection includes the following components by weight fraction: 75 parts of slag (particle size ≤ 325 mesh), 20 parts of metakaolin (particle size ≤ 325 mesh), silicon powder (particle size ≤ 325 mesh) mesh) 5 parts, KOH 15 parts, artificial sand (particle size ≤ 2.36mm, mud content less than 0.5%) 100 parts, polyurethane emulsion 20 parts, PVA fiber (length ≤ 10mm) 0.3 parts, calcium sulfoaluminate base 4 parts of expansion agent, 2 parts of polycarboxylate water reducer, 0.8 part of sodium bentonite, 0.8 part of isooctyltriethoxysilane, 0.3 part of octanol, 40 parts of water.
[0037] The preparation method is as follows: 1) Add slag, metakaolin, silicon powder, calcium sulfoaluminate-based expansion agent and PVA fiber into the high-speed mixer, and stir for 8 minutes (800 rpm) to disperse the fibers evenly; 2) Add to the high-speed mixer Water, KOH, polycarboxylate water reducer and sodium bentonite, stirring (speed...
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