Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
Modified bentonite slurry for ultra-deep underground diaphragm wall and preparation method of modified bentonite slurry
The invention belongs to the technical field of building materials, and particularly relates to modified bentonite slurry for an ultra-deep underground diaphragm wall and a preparation method thereof.The modified bentonite slurry is prepared from, by mass, 5.86%-6.46% of modified sodium bentonite, 0.1%-0.16% of starch, 0.034%-0.04% of sodium carbonate, 0.02%-0.026% of carboxymethylcellulose, 0.024%-0.032% of polyacrylamide, 0.6%-0.8% of barite powder and the balance water. And the balance of mixing water. The microstructure of the bentonite is improved through silane treatment, the dispersing capacity of the bentonite in the slurry is enhanced, the sodium bentonite is subjected to nano-modification through a homogenizer, the synergistic effect of the nano-modified bentonite and other additives is exerted, and the prepared wall protection slurry is more stable in rheological property and higher in stability. The slurry has a certain shear thinning performance, enhances the functions of suspending soil residues by the slurry and carrying the soil residues out of the ground, can effectively avoid a series of problems such as necking or hole collapse and the like in a continuous wall construction grooving process, has a good slurry wall protection effect, and is suitable for underground continuous wall construction under various different soil texture conditions.
本发明属于建筑材料技术领域，尤其涉及一种用于超深地下连续墙的改性膨润土泥浆及其制备方法，按质量百分比计，包括以下组分：改性钠质膨润土5.86％‑6.46％，淀粉0.1‑0.16％，碳酸钠0.034％‑0.04％，羧甲基纤维素0.02‑0.026％，聚丙烯酰胺0.024％‑0.032％，重晶石粉0.6％‑0.8％，余量为拌合水。本发明通过硅烷处理来改善膨润土的微观结构，增强膨润土在泥浆中的分散能力，通过使用均质机对钠质膨润土进行了纳米改性，发挥纳米改性膨润土与其他添加剂的协同作用，制备的护壁泥浆流变特性更稳定，表现出一定的剪切稀化性能，加强了泥浆悬浮土渣和将土渣携带出地面的功能，同时可有效避免连续墙施工成槽过程中发生缩颈或塌孔等一系列问题，具有良好的泥浆护壁效果，适用于各类不同土质条件的地下连续墙施工。
Modified bentonite slurry for ultra-deep underground diaphragm wall and preparation method of modified bentonite slurry
The invention belongs to the technical field of building materials, and particularly relates to modified bentonite slurry for an ultra-deep underground diaphragm wall and a preparation method thereof.The modified bentonite slurry is prepared from, by mass, 5.86%-6.46% of modified sodium bentonite, 0.1%-0.16% of starch, 0.034%-0.04% of sodium carbonate, 0.02%-0.026% of carboxymethylcellulose, 0.024%-0.032% of polyacrylamide, 0.6%-0.8% of barite powder and the balance water. And the balance of mixing water. The microstructure of the bentonite is improved through silane treatment, the dispersing capacity of the bentonite in the slurry is enhanced, the sodium bentonite is subjected to nano-modification through a homogenizer, the synergistic effect of the nano-modified bentonite and other additives is exerted, and the prepared wall protection slurry is more stable in rheological property and higher in stability. The slurry has a certain shear thinning performance, enhances the functions of suspending soil residues by the slurry and carrying the soil residues out of the ground, can effectively avoid a series of problems such as necking or hole collapse and the like in a continuous wall construction grooving process, has a good slurry wall protection effect, and is suitable for underground continuous wall construction under various different soil texture conditions.
本发明属于建筑材料技术领域，尤其涉及一种用于超深地下连续墙的改性膨润土泥浆及其制备方法，按质量百分比计，包括以下组分：改性钠质膨润土5.86％‑6.46％，淀粉0.1‑0.16％，碳酸钠0.034％‑0.04％，羧甲基纤维素0.02‑0.026％，聚丙烯酰胺0.024％‑0.032％，重晶石粉0.6％‑0.8％，余量为拌合水。本发明通过硅烷处理来改善膨润土的微观结构，增强膨润土在泥浆中的分散能力，通过使用均质机对钠质膨润土进行了纳米改性，发挥纳米改性膨润土与其他添加剂的协同作用，制备的护壁泥浆流变特性更稳定，表现出一定的剪切稀化性能，加强了泥浆悬浮土渣和将土渣携带出地面的功能，同时可有效避免连续墙施工成槽过程中发生缩颈或塌孔等一系列问题，具有良好的泥浆护壁效果，适用于各类不同土质条件的地下连续墙施工。
Modified bentonite slurry for ultra-deep underground diaphragm wall and preparation method of modified bentonite slurry
一种用于超深地下连续墙的改性膨润土泥浆及其制备方法
ZHAO YUN (Autor:in) / LIU XIAOMIN (Autor:in) / ZHOU JUNLONG (Autor:in) / JIA JIANWEI (Autor:in) / XU YUNLONG (Autor:in) / BAI QIANGQIANG (Autor:in)
23.02.2024
Patent
Elektronische Ressource
Chinesisch
IPC:
C04B
Kalk
,
LIME
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