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Composite admixture of steel slag, coal ash and copper tailings as well as preparation method and application of composite admixture
The invention discloses a composite admixture of steel slag, fly ash and copper tailings as well as a preparation method and application thereof. 100% of the composite admixture is prepared from the following raw materials: 43-49% of fly ash, 26-31% of steel slag, 23-27% of copper tailings, 0.25-0.53% of anhydrous sodium sulphate, 0.4-0.7% of sodium hydroxide, 1.28-2.67% of water glass, 0.02-0.05%of glycerol, 0.01-0.03% of triethanolamine, 0.01% of polycarboxylate superplasticizer powder, 0.01-0.02% of hydroxypropyl methyl cellulose, 0.02% of EDIPA, wherein the percentages are mass percentages. Hydroxypropyl methyl cellulose is used, so that the hydrophobicity and cohesive force of the copper tailings can be improved, and the compaction characteristic and the structural stability of the doped copper tailing mixture are further improved. Sodium hydroxide is added, so that silicate components in the steel slag, the copper tailings and the coal ash can be excited by alkalinity, and the pavement properties such as strength and durability of the admixture are improved. Alcohol amine is added, so that the early strength and the later strength of the admixture can be improved, and the admixture can be easily ground before use to excite the activity.
本发明公开了一种钢渣、粉煤灰和铜尾渣的复合掺合料及其制备方法和应用，由以下原料制备得到：粉煤灰43～49%，钢渣26~31%，铜尾渣23～27%，元明粉0.25~0.53%，氢氧化钠0.4~0.7%，水玻璃1.28~2.67%，甘油0.02~0.05%，三乙醇胺0.01~0.03%，聚羧酸减水剂粉体0.01%，羟丙基甲基纤维素0.01~0.02%，单乙醇二异丙醇胺0.02%，总量100%；所述百分比均为质量百分比。使用了羟丙基甲基纤维素可以改善铜尾渣的憎水性和粘聚力，进而改善掺杂铜尾渣混合物的压实特性以及结构的稳定性。加入氢氧化钠可以碱性激发钢渣，铜尾渣和粉煤灰里的硅酸盐成分，提高掺合料的强度和耐久性等路用性能。加入醇胺既可以提高掺合料的早期强度和后期强度，还可以使掺合料使用前易磨激发活性。
Composite admixture of steel slag, coal ash and copper tailings as well as preparation method and application of composite admixture
The invention discloses a composite admixture of steel slag, fly ash and copper tailings as well as a preparation method and application thereof. 100% of the composite admixture is prepared from the following raw materials: 43-49% of fly ash, 26-31% of steel slag, 23-27% of copper tailings, 0.25-0.53% of anhydrous sodium sulphate, 0.4-0.7% of sodium hydroxide, 1.28-2.67% of water glass, 0.02-0.05%of glycerol, 0.01-0.03% of triethanolamine, 0.01% of polycarboxylate superplasticizer powder, 0.01-0.02% of hydroxypropyl methyl cellulose, 0.02% of EDIPA, wherein the percentages are mass percentages. Hydroxypropyl methyl cellulose is used, so that the hydrophobicity and cohesive force of the copper tailings can be improved, and the compaction characteristic and the structural stability of the doped copper tailing mixture are further improved. Sodium hydroxide is added, so that silicate components in the steel slag, the copper tailings and the coal ash can be excited by alkalinity, and the pavement properties such as strength and durability of the admixture are improved. Alcohol amine is added, so that the early strength and the later strength of the admixture can be improved, and the admixture can be easily ground before use to excite the activity.
本发明公开了一种钢渣、粉煤灰和铜尾渣的复合掺合料及其制备方法和应用，由以下原料制备得到：粉煤灰43～49%，钢渣26~31%，铜尾渣23～27%，元明粉0.25~0.53%，氢氧化钠0.4~0.7%，水玻璃1.28~2.67%，甘油0.02~0.05%，三乙醇胺0.01~0.03%，聚羧酸减水剂粉体0.01%，羟丙基甲基纤维素0.01~0.02%，单乙醇二异丙醇胺0.02%，总量100%；所述百分比均为质量百分比。使用了羟丙基甲基纤维素可以改善铜尾渣的憎水性和粘聚力，进而改善掺杂铜尾渣混合物的压实特性以及结构的稳定性。加入氢氧化钠可以碱性激发钢渣，铜尾渣和粉煤灰里的硅酸盐成分，提高掺合料的强度和耐久性等路用性能。加入醇胺既可以提高掺合料的早期强度和后期强度，还可以使掺合料使用前易磨激发活性。
Composite admixture of steel slag, coal ash and copper tailings as well as preparation method and application of composite admixture
一种钢渣、粉煤灰和铜尾渣的复合掺合料及其制备方法和应用
LI XIAOJING (author) / XIE HAO (author) / LIU GUOHUA (author) / SUN BO (author)
2021-03-12
Patent
Electronic Resource
Chinese
IPC:
C04B
Kalk
,
LIME
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