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Formula and preparation method of self-compacting concrete admixture
The invention discloses a formula and a preparation method of a self-compacting concrete admixture. The self-compacting concrete admixture comprises the following components in percentage by mass: 5-7% of a polycarboxylate superplasticizer 001, 6-8% of a polycarboxylate superplasticizer 002, 24-28% of a polycarboxylate superplasticizer 004, 0.5-2.5% of anhydrous sodium sulphate, 0.5-2.5% of sodiumhexametaphosphate, 0.5-2.5% of borax, 0.1-0.5% of caustic soda and 0.05-0.1% of a water-retaining agent. According to the invention, compared with other common admixtures, the admixture of the invention has the advantages that the concrete subjected to trial mixing is smooth in surface and free of honeycombs and pitted surfaces, the viscosity of the concrete is reduced, the workability of the concrete is enhanced, the slump time-dependent loss of the concrete is basically avoided, the concrete is good in self-compaction, high in flowability and free of vibration, and the excellent effects ofhigh-layer pouring, no requirement of steam curing, smooth concrete structure surface, no pore on the concrete surface, high strength and the like can be achieved.
本发明公开了一种自密实混凝土外加剂配方及其制备方法，该自密实混凝土外加剂配方及其制备方法包括以下质量百分数组分：聚羧酸减水剂001为5％～7％，聚羧酸减水剂002为6％～8％，聚羧酸减水剂004为24％～28％，元明粉为0.5％～2.5％，六偏磷酸钠为0.5％～2.5％，硼砂0.5％～2.5％，烧碱0.1％～0.5％，保水剂0.05％～0.1％；此外加剂较其它普通外加剂而言，试拌的混凝土表面光滑，无蜂窝和麻面，还降低了混凝土的粘性，增强和易性，而且基本没有塌落度经时损失；另外该加剂使得混凝土自密实性好，流动性大，免振动，可以实现更高层浇筑，免蒸养护，混凝土结构表面光滑无气孔，强度高等优良效果。
Formula and preparation method of self-compacting concrete admixture
The invention discloses a formula and a preparation method of a self-compacting concrete admixture. The self-compacting concrete admixture comprises the following components in percentage by mass: 5-7% of a polycarboxylate superplasticizer 001, 6-8% of a polycarboxylate superplasticizer 002, 24-28% of a polycarboxylate superplasticizer 004, 0.5-2.5% of anhydrous sodium sulphate, 0.5-2.5% of sodiumhexametaphosphate, 0.5-2.5% of borax, 0.1-0.5% of caustic soda and 0.05-0.1% of a water-retaining agent. According to the invention, compared with other common admixtures, the admixture of the invention has the advantages that the concrete subjected to trial mixing is smooth in surface and free of honeycombs and pitted surfaces, the viscosity of the concrete is reduced, the workability of the concrete is enhanced, the slump time-dependent loss of the concrete is basically avoided, the concrete is good in self-compaction, high in flowability and free of vibration, and the excellent effects ofhigh-layer pouring, no requirement of steam curing, smooth concrete structure surface, no pore on the concrete surface, high strength and the like can be achieved.
本发明公开了一种自密实混凝土外加剂配方及其制备方法，该自密实混凝土外加剂配方及其制备方法包括以下质量百分数组分：聚羧酸减水剂001为5％～7％，聚羧酸减水剂002为6％～8％，聚羧酸减水剂004为24％～28％，元明粉为0.5％～2.5％，六偏磷酸钠为0.5％～2.5％，硼砂0.5％～2.5％，烧碱0.1％～0.5％，保水剂0.05％～0.1％；此外加剂较其它普通外加剂而言，试拌的混凝土表面光滑，无蜂窝和麻面，还降低了混凝土的粘性，增强和易性，而且基本没有塌落度经时损失；另外该加剂使得混凝土自密实性好，流动性大，免振动，可以实现更高层浇筑，免蒸养护，混凝土结构表面光滑无气孔，强度高等优良效果。
Formula and preparation method of self-compacting concrete admixture
一种自密实混凝土外加剂配方及其制备方法
CHEN MAOYIN (author) / LI JINTAO (author) / LIU HUIYIN (author) / ZHANG YIZHI (author) / LI RUI (author) / YANG CAILAN (author)
2020-04-17
Patent
Electronic Resource
Chinese
IPC:
C04B
Kalk
,
LIME
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