Method for homogeneously modifying pulverized coal ash by vapor deposition process
A vapor deposition method and homogeneous modification technology, which is applied in the direction of climate sustainability, sustainable waste treatment, solid waste management, etc., can solve the problems of poorly improved concrete work performance, decreased concrete durability, and fly ash Problems such as the weakening of the ball effect, to avoid the increase in water demand, improve efficiency, and avoid the effect of early strength reduction
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Embodiment 1
[0018] Take the preparation of 100kg functionalized homogeneously modified fly ash as an example. Weigh each raw material: fly ash 100kg, compound grinding aid triisopropanolamine 0.02kg, compound grinding aid molasses 0.01kg, dissolve the two grinding aids in 0.07kg water, and deposit on the powder naturally after atomization. Grind the coal ash surface for 15 minutes with a ball mill until the specific surface area is 550-700m 2 / kg. Weigh 0.75 kg of high-efficiency dispersing components and 0.25 kg of reinforcing components, dissolve them evenly in 1 kg of water, put them into an atomizing sprayer, and naturally deposit them on the pulverized fly ash after atomization, and then weigh the retarded Add 0.2kg of the slump-preserving component into the surface-modified fly ash, and mix evenly with a mixer.
[0019] The high-efficiency dispersing component is a powdery polycarboxylic acid-based high-efficiency water reducer; the reinforcing component is a chemically pure reage...
Embodiment 2
[0022] Take the preparation of 100kg functionalized homogeneously modified fly ash as an example. Weigh each raw material: fly ash 100kg, compound grinding aid triisopropanolamine 0.02kg, compound grinding aid molasses 0.01kg, dissolve the two grinding aids in 0.07kg water, and deposit on the powder naturally after atomization. Grind the coal ash surface for 15 minutes with a ball mill until the specific surface area is 550-700m 2 / kg. Weigh 1 kg of high-efficiency dispersing components and 0.5 kg of reinforcing components, dissolve them evenly in 1.5 kg of water, put them into an atomizing sprayer, and deposit them naturally on the pulverized fly ash after atomization, and then weigh the retarded Add 0.2kg of the slump-preserving component into the surface-modified fly ash, and mix evenly with a mixer.
[0023] The high-efficiency dispersing component is a powdery polycarboxylic acid-based high-efficiency water reducer; the reinforcing component is a chemically pure reagent...
Embodiment 3
[0026] Take the preparation of 100kg functionalized homogeneously modified fly ash as an example. Weigh each raw material: 100kg of fly ash, 0.04kg of compound grinding aid triisopropanolamine, 0.02kg of compound grinding aid molasses, dissolve the two grinding aids in 0.14kg of water, and naturally deposit on the powder after atomization. Grind the coal ash surface for 15 minutes with a ball mill until the specific surface area is 550-700m 2 / kg. Weigh 1 kg of high-efficiency dispersing components and 0.5 kg of reinforcing components, dissolve them evenly in 1.5 kg of water, put them into an atomizing sprayer, and deposit them naturally on the pulverized fly ash after atomization, and then weigh the retarded Add 0.2kg of the slump-preserving component into the surface-modified fly ash, and mix evenly with a mixer.
[0027] The high-efficiency dispersing component is a powdery polycarboxylic acid-based high-efficiency water reducer; the reinforcing component is a chemically ...
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