A platform for research: civil engineering, architecture and urbanism
A platform for research: civil engineering, architecture and urbanism
Early-strength and long-acting slump-retaining composite functional admixture as well as preparation method and application thereof
The invention belongs to the technical field of building material admixtures, and discloses an early-strength and long-acting slump-retaining composite functional admixture and a preparation method and application thereof.The preparation method comprises the following steps that 1, tricalcium aluminate, an activating agent and a grinding medium are added into water, grinding is conducted after pH is adjusted, the grinding medium is removed after grinding is finished, and a suspension A is obtained; 2) adding the suspension A and a water reducing agent into a reaction kettle, introducing inert gas for protection, and reacting under heating and pressurizing to obtain a suspension B; and (3) stirring and mixing the suspension B, a surfactant and limestone powder, and then carrying out ultrasonic dispersion to obtain the early-strength and long-acting slump-retaining composite functional admixture. When the composite functional admixture is applied to the super sulfate cement, the composite functional admixture not only has excellent early strength performance, but also can realize water reduction and long-acting slump loss resistance, and provides effective technical support for large-scale application of the super sulfate cement.
本发明属于建筑材料外加剂技术领域，公开了一种早强及长效保坍复合功能外加剂及其制备方法和应用，其制备方法包括以下步骤：1)将铝酸三钙、活化剂、研磨介质加入水中，调节pH后进行研磨，研磨结束后除去研磨介质，得到悬浮液A；2)将悬浮液A、减水剂加入到反应釜中，通惰性气体进行保护，加温加压下进行反应，得到悬浮液B；3)将悬浮液B与表面活性剂和石灰石粉先搅拌混合，再超声分散，得到早强及长效保坍复合功能外加剂。本发明复合功能外加剂应用于超硫酸盐水泥中时，不仅具有优异的早强性能，同时可以实现减水以及长效保坍，对超硫酸盐水泥的规模化应用提供了有效的技术支撑。
Early-strength and long-acting slump-retaining composite functional admixture as well as preparation method and application thereof
The invention belongs to the technical field of building material admixtures, and discloses an early-strength and long-acting slump-retaining composite functional admixture and a preparation method and application thereof.The preparation method comprises the following steps that 1, tricalcium aluminate, an activating agent and a grinding medium are added into water, grinding is conducted after pH is adjusted, the grinding medium is removed after grinding is finished, and a suspension A is obtained; 2) adding the suspension A and a water reducing agent into a reaction kettle, introducing inert gas for protection, and reacting under heating and pressurizing to obtain a suspension B; and (3) stirring and mixing the suspension B, a surfactant and limestone powder, and then carrying out ultrasonic dispersion to obtain the early-strength and long-acting slump-retaining composite functional admixture. When the composite functional admixture is applied to the super sulfate cement, the composite functional admixture not only has excellent early strength performance, but also can realize water reduction and long-acting slump loss resistance, and provides effective technical support for large-scale application of the super sulfate cement.
本发明属于建筑材料外加剂技术领域，公开了一种早强及长效保坍复合功能外加剂及其制备方法和应用，其制备方法包括以下步骤：1)将铝酸三钙、活化剂、研磨介质加入水中，调节pH后进行研磨，研磨结束后除去研磨介质，得到悬浮液A；2)将悬浮液A、减水剂加入到反应釜中，通惰性气体进行保护，加温加压下进行反应，得到悬浮液B；3)将悬浮液B与表面活性剂和石灰石粉先搅拌混合，再超声分散，得到早强及长效保坍复合功能外加剂。本发明复合功能外加剂应用于超硫酸盐水泥中时，不仅具有优异的早强性能，同时可以实现减水以及长效保坍，对超硫酸盐水泥的规模化应用提供了有效的技术支撑。
Early-strength and long-acting slump-retaining composite functional admixture as well as preparation method and application thereof
一种早强及长效保坍复合功能外加剂及其制备方法和应用
TAN HONGBO (author) / WANG YIFAN (author) / LEE SANG-KOOK (author) / JIAN SHOUWEI (author) / HUANG JIAN (author) / LYU YANG (author)
2024-11-05
Patent
Electronic Resource
Chinese
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