Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
The invention discloses an additive for inhibiting cement mortar efflorescence and a preparation method thereof, and belongs to the field of cement additives. The additive has an efficient water reducing property, can reduce carriers serving as soluble alkali and soluble salt, improve the saltpetering degree of the cement mortar, reduce the porosity of the hardened cement mortar and reduce a saltpetering migration channel, and-COO-reacts with Ca < 2 + > to form a complex, so that the concentration of Ca < 2 + > in a solution is reduced, Ca (OH) 2 is delayed to form crystals, and the stability of the cement mortar is improved. The formation of C-H-S gel is reduced, so that the generation of saltpetering is inhibited; by introducing various functional groups and various functional groups, the water reducing property of the additive is greatly improved, and the additive is endowed with certain retarding, slump retaining, anti-cracking properties and compatibility and has important application significance.
本发明公开了一种抑制水泥砂浆泛碱的添加剂及制备方法，属于水泥添加剂领域。添加剂有高效的减水性，能使得作为可溶性碱和可溶性盐的载体减少，改善水泥砂浆的泛碱程度，还可以减少水泥砂浆硬化后的孔隙率，减少泛碱的迁移通道，并且‑COO‑与Ca2+作用形成络合物，降低了溶液中的Ca2+浓度，延缓Ca(OH)2形成结晶，减少C‑H‑S凝胶的形成，从而抑制泛碱的产生；通过引入各种官能团通过引入多种官能团，极大的提高了添加剂的减水性，并赋予添加剂一定缓凝、保坍、抗裂性能、相容性，具备重要的应用意义。
The invention discloses an additive for inhibiting cement mortar efflorescence and a preparation method thereof, and belongs to the field of cement additives. The additive has an efficient water reducing property, can reduce carriers serving as soluble alkali and soluble salt, improve the saltpetering degree of the cement mortar, reduce the porosity of the hardened cement mortar and reduce a saltpetering migration channel, and-COO-reacts with Ca < 2 + > to form a complex, so that the concentration of Ca < 2 + > in a solution is reduced, Ca (OH) 2 is delayed to form crystals, and the stability of the cement mortar is improved. The formation of C-H-S gel is reduced, so that the generation of saltpetering is inhibited; by introducing various functional groups and various functional groups, the water reducing property of the additive is greatly improved, and the additive is endowed with certain retarding, slump retaining, anti-cracking properties and compatibility and has important application significance.
本发明公开了一种抑制水泥砂浆泛碱的添加剂及制备方法，属于水泥添加剂领域。添加剂有高效的减水性，能使得作为可溶性碱和可溶性盐的载体减少，改善水泥砂浆的泛碱程度，还可以减少水泥砂浆硬化后的孔隙率，减少泛碱的迁移通道，并且‑COO‑与Ca2+作用形成络合物，降低了溶液中的Ca2+浓度，延缓Ca(OH)2形成结晶，减少C‑H‑S凝胶的形成，从而抑制泛碱的产生；通过引入各种官能团通过引入多种官能团，极大的提高了添加剂的减水性，并赋予添加剂一定缓凝、保坍、抗裂性能、相容性，具备重要的应用意义。
Additive for inhibiting cement mortar efflorescence and preparation method thereof
一种抑制水泥砂浆泛碱的添加剂及制备方法
LIU LIHUA (Autor:in)
03.11.2023
Patent
Elektronische Ressource
Chinesisch
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