A platform for research: civil engineering, architecture and urbanism
A platform for research: civil engineering, architecture and urbanism
Low-viscosity ultrahigh-performance grouting material for steel bar sleeve and preparation method of grouting material
The invention provides a low-viscosity ultrahigh-performance grouting material for a steel bar sleeve and a preparation method of the grouting material. The grouting material is composed of grouting dry powder and water; the grouting dry powder comprises a cementing material, fine aggregate and an additive; the cementing material comprises, by weight, Portland cement, silica fume, mineral powder and fine limestone powder; the sum of the cementing material and the fine aggregate is equal to 100%; and the additive comprises the following components of: a plastic expanding agent, a polycarboxylic acid superplasticizer, a middle-and later-stage expanding agent and a defoaming agent. The method comprises the following steps of: uniformly mixing and stirring the raw materials according to a mixing ratio to obtain grouting material dry powder; adding 9-12 parts of water into 100 parts of the dry powder; and fully stirring the obtained mixture by a mortar stirrer to obtain the grouting material. The grouting material has the advantages of low viscosity, high fluidity, ultrahigh strength, early-stage micro-expansibility, no shrinkage in the middle and later stages and the like, so that grouting construction is easier to operate, grouting defects are not generated in the grouting process, and stable and reliable connection is formed between prefabricated parts.
本发明提供一种低粘超高性能钢筋套筒用灌浆料及其制备方法。灌浆料由灌浆干粉和水组成，灌浆料干粉包括胶凝材料、细骨料和外加剂，其中，以重量百分比计，胶凝材料包括：硅酸盐水泥、硅灰、矿粉和细石灰石粉。胶凝材料和细骨料之和等于100％。外加剂的组分为：塑性膨胀剂、聚羧酸高效减水剂、中后期膨胀剂、消泡剂。该方法为：按配合比取原料混合搅拌均匀即可得到灌浆料干粉，取该干粉100份，加入9‑12份水，经过砂浆搅拌机充分搅拌，得到所述灌浆料。该灌浆料具有低粘高流动度、超高强度、早期微膨胀性、中后期无收缩等优点，使灌浆施工更容易操作，灌浆过程不产生灌浆缺陷，使预制构件之间形成稳定可靠的连接。
Low-viscosity ultrahigh-performance grouting material for steel bar sleeve and preparation method of grouting material
The invention provides a low-viscosity ultrahigh-performance grouting material for a steel bar sleeve and a preparation method of the grouting material. The grouting material is composed of grouting dry powder and water; the grouting dry powder comprises a cementing material, fine aggregate and an additive; the cementing material comprises, by weight, Portland cement, silica fume, mineral powder and fine limestone powder; the sum of the cementing material and the fine aggregate is equal to 100%; and the additive comprises the following components of: a plastic expanding agent, a polycarboxylic acid superplasticizer, a middle-and later-stage expanding agent and a defoaming agent. The method comprises the following steps of: uniformly mixing and stirring the raw materials according to a mixing ratio to obtain grouting material dry powder; adding 9-12 parts of water into 100 parts of the dry powder; and fully stirring the obtained mixture by a mortar stirrer to obtain the grouting material. The grouting material has the advantages of low viscosity, high fluidity, ultrahigh strength, early-stage micro-expansibility, no shrinkage in the middle and later stages and the like, so that grouting construction is easier to operate, grouting defects are not generated in the grouting process, and stable and reliable connection is formed between prefabricated parts.
本发明提供一种低粘超高性能钢筋套筒用灌浆料及其制备方法。灌浆料由灌浆干粉和水组成，灌浆料干粉包括胶凝材料、细骨料和外加剂，其中，以重量百分比计，胶凝材料包括：硅酸盐水泥、硅灰、矿粉和细石灰石粉。胶凝材料和细骨料之和等于100％。外加剂的组分为：塑性膨胀剂、聚羧酸高效减水剂、中后期膨胀剂、消泡剂。该方法为：按配合比取原料混合搅拌均匀即可得到灌浆料干粉，取该干粉100份，加入9‑12份水，经过砂浆搅拌机充分搅拌，得到所述灌浆料。该灌浆料具有低粘高流动度、超高强度、早期微膨胀性、中后期无收缩等优点，使灌浆施工更容易操作，灌浆过程不产生灌浆缺陷，使预制构件之间形成稳定可靠的连接。
Low-viscosity ultrahigh-performance grouting material for steel bar sleeve and preparation method of grouting material
一种低粘超高性能钢筋套筒用灌浆料及其制备方法
WEI JIANGXIONG (author) / YANG FANGQI (author) / HUANG HAOLIANG (author) / GAO PENG (author) / YU QIJUN (author)
2021-07-30
Patent
Electronic Resource
Chinese
IPC:
C04B
Kalk
,
LIME
| European Patent Office | 2021
| European Patent Office | 2022
Slurry grouting material and sleeve valve pipe grouting process
| European Patent Office | 2024