Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
Water reducing agent for sprayed concrete as well as preparation method and application of water reducing agent
The invention belongs to the technical field of building materials, and discloses a water reducing agent for sprayed concrete, which comprises the following components in percentage by mass: 16-24% of polycarboxylic acid water reducing agent mother liquor, 15-25% of polycarboxylic acid slump retaining agent mother liquor, 2-4% of viscosity modifier, 1-3% of concrete retarder, 1-3% of coagulant, 1-3% of early strength agent, 1-5% of gas content regulator and the balance of water. The preparation method comprises the following steps: S1, weighing the components in percentage by mass; s2, putting water into a reaction kettle, adding a concrete retarder and a coagulant, and stirring until a clear solution is obtained; s3, adding a polycarboxylic acid water reducing agent mother solution and a polycarboxylic acid slump retaining agent mother solution, and stirring for 10 minutes; s4, adding a viscosity modifier and an early strength agent, and stirring for 10 minutes at the speed of 200r/min; s5, adding a gas content regulator, and stirring for 5 minutes; the water reducing agent for the sprayed concrete can improve the working performance of the sprayed concrete, improve the setting performance of the sprayed concrete and reduce the use amount of a cementing material and the use amount of an alkali-free accelerator of the sprayed concrete.
本发明属于建筑材料技术领域，公开了一种用于喷射混凝土的减水剂，按质量百分比的组分为：聚羧酸减水剂母液16～24％、聚羧酸保坍剂母液15～25％、粘度改性剂2～4％、混凝土缓凝剂1～3％、促凝剂1～3％、早强剂1～3％、含气量调节剂1～5％，其余的为水。其制备方法，包括S1、按质量百分比称取各组分；S2、将水置于反应釜中，加入混凝土缓凝剂和促凝剂，搅拌至澄清溶液；S3、加入聚羧酸减水剂母液和聚羧酸保坍剂母液，搅拌10min；S4、加入粘度改性剂和早强剂，以200r/min的速率搅拌10min；S5、加入含气量调节剂，搅拌5min；本发明提供的用于喷射混凝土的减水剂可以改善喷射混凝土工作性能，提升喷射混凝土凝结性能，降低喷射混凝土的胶凝材料用量和无碱速凝剂用量。
Water reducing agent for sprayed concrete as well as preparation method and application of water reducing agent
The invention belongs to the technical field of building materials, and discloses a water reducing agent for sprayed concrete, which comprises the following components in percentage by mass: 16-24% of polycarboxylic acid water reducing agent mother liquor, 15-25% of polycarboxylic acid slump retaining agent mother liquor, 2-4% of viscosity modifier, 1-3% of concrete retarder, 1-3% of coagulant, 1-3% of early strength agent, 1-5% of gas content regulator and the balance of water. The preparation method comprises the following steps: S1, weighing the components in percentage by mass; s2, putting water into a reaction kettle, adding a concrete retarder and a coagulant, and stirring until a clear solution is obtained; s3, adding a polycarboxylic acid water reducing agent mother solution and a polycarboxylic acid slump retaining agent mother solution, and stirring for 10 minutes; s4, adding a viscosity modifier and an early strength agent, and stirring for 10 minutes at the speed of 200r/min; s5, adding a gas content regulator, and stirring for 5 minutes; the water reducing agent for the sprayed concrete can improve the working performance of the sprayed concrete, improve the setting performance of the sprayed concrete and reduce the use amount of a cementing material and the use amount of an alkali-free accelerator of the sprayed concrete.
本发明属于建筑材料技术领域，公开了一种用于喷射混凝土的减水剂，按质量百分比的组分为：聚羧酸减水剂母液16～24％、聚羧酸保坍剂母液15～25％、粘度改性剂2～4％、混凝土缓凝剂1～3％、促凝剂1～3％、早强剂1～3％、含气量调节剂1～5％，其余的为水。其制备方法，包括S1、按质量百分比称取各组分；S2、将水置于反应釜中，加入混凝土缓凝剂和促凝剂，搅拌至澄清溶液；S3、加入聚羧酸减水剂母液和聚羧酸保坍剂母液，搅拌10min；S4、加入粘度改性剂和早强剂，以200r/min的速率搅拌10min；S5、加入含气量调节剂，搅拌5min；本发明提供的用于喷射混凝土的减水剂可以改善喷射混凝土工作性能，提升喷射混凝土凝结性能，降低喷射混凝土的胶凝材料用量和无碱速凝剂用量。
Water reducing agent for sprayed concrete as well as preparation method and application of water reducing agent
一种用于喷射混凝土的减水剂、制备方法及应用
LI TAISHAN (Autor:in) / DENG YIXUAN (Autor:in) / LIU YUAN (Autor:in) / LI ZHENMING (Autor:in) / LI JIAN (Autor:in)
07.03.2023
Patent
Elektronische Ressource
Chinesisch
IPC:
C04B
Kalk
,
LIME
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