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Composite early strength admixture as well as preparation method and application thereof
The invention discloses a composite early strength admixture and a preparation method thereof. The composite early strength admixture is prepared from the following raw materials in parts by mass: 20-30 parts of a polycarboxylate superplasticizer, 10-20 parts of an early strength agent, 1-5 parts of nano silicon dioxide, 1-5 parts of nano microcrystalline cellulose and 5-10 parts of a pH regulator. Wherein the early strength agent is composed of soluble inorganic salt and soluble alcohol amine, and the ratio of the soluble inorganic salt to the soluble alcohol amine is 97: 3-95: 5. The composite early strength admixture can accelerate the cement hydration reaction process, improve the concrete compactness, solve the problem of slow development of the early strength of concrete in a negative temperature environment, ensure the later strength of concrete, and avoid the problems of easy later strength shrinkage and the like of the traditional early strength admixture.
本发明公开了一种复合型早强外加剂及其制备方法，由以下质量份的原料组成：聚羧酸减水剂20～30份，早强剂10～20份，纳米二氧化硅1～5份，纳米微晶纤维素1～5份，pH调节剂5～10份；其中，早强剂由可溶性无机盐与可溶性醇胺构成，可溶性无机盐与可溶性醇胺的比例为97:3～95:5。所述复合型早强外加剂可加速水泥水化反应进程，提升混凝土密实性，在解决混凝土负温环境下早期强度发展缓慢问题的同时，能够保障混凝土后期强度，避免了传统早强剂易出现的后期强度倒缩等问题。
Composite early strength admixture as well as preparation method and application thereof
The invention discloses a composite early strength admixture and a preparation method thereof. The composite early strength admixture is prepared from the following raw materials in parts by mass: 20-30 parts of a polycarboxylate superplasticizer, 10-20 parts of an early strength agent, 1-5 parts of nano silicon dioxide, 1-5 parts of nano microcrystalline cellulose and 5-10 parts of a pH regulator. Wherein the early strength agent is composed of soluble inorganic salt and soluble alcohol amine, and the ratio of the soluble inorganic salt to the soluble alcohol amine is 97: 3-95: 5. The composite early strength admixture can accelerate the cement hydration reaction process, improve the concrete compactness, solve the problem of slow development of the early strength of concrete in a negative temperature environment, ensure the later strength of concrete, and avoid the problems of easy later strength shrinkage and the like of the traditional early strength admixture.
本发明公开了一种复合型早强外加剂及其制备方法，由以下质量份的原料组成：聚羧酸减水剂20～30份，早强剂10～20份，纳米二氧化硅1～5份，纳米微晶纤维素1～5份，pH调节剂5～10份；其中，早强剂由可溶性无机盐与可溶性醇胺构成，可溶性无机盐与可溶性醇胺的比例为97:3～95:5。所述复合型早强外加剂可加速水泥水化反应进程，提升混凝土密实性，在解决混凝土负温环境下早期强度发展缓慢问题的同时，能够保障混凝土后期强度，避免了传统早强剂易出现的后期强度倒缩等问题。
Composite early strength admixture as well as preparation method and application thereof
一种复合型早强外加剂及其制备方法和应用
YANG WEN (author) / WANG JUN (author) / GAO YUXIN (author) / LIU MING (author) / ZHANG YI (author) / ZHANG LEI (author) / ZENG CHAO (author) / WANG FUTAO (author) / YAN SONGLING (author) / ZHAO XIAO (author)
2023-11-10
Patent
Electronic Resource
Chinese
IPC:
C04B
Kalk
,
LIME
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