实验研究对基乙烯纤维素对压力降低性能的效果,在管道接施工中Thixotropic泥的试验研究
Xiao Yu1, Yajun Cao1, Fubing Tian1
1Key Laboratory of Ministry of Education for Geomechanics and Embankment Engineering, Hohai University, Nanjing 210024, China.
Materials (Basel, Switzerland)
|July 12, 2025
概括
基乙烯纤维素 (HEC) 增强了管道提升中的厚性泥性能. 这种新型添加剂提高粘度,减少流体损失,在充满挑战的环境中提供卓越的稳定性.
科学领域:
- 土木工程 土木工程是指土木工程.
- 地质技术工程 地质技术工程
- 材料科学 材料科学 材料科学
背景情况:
- 锡热对于滑,减少摩擦和在管道提升中提供地面支至关重要.
- 使用本托尼特和碳甲基纤维素 (CMC) 的传统配方在具有挑战性的条件下具有性能限制.
研究的目的:
- 根据六个关键参数来评估克索特洛普泥的性能.
- 引入和评估基乙纤维素 (HEC) 作为一种用于改善泥性能的新增剂.
- 研究HEC对泥性能的影响及其在苛刻的地质环境中的有效性.
主要方法:
- 进行了直角实验,以优化本托尼特,CMC和碳酸的比例.
- 比较实验评估了HEC与CMC的性能,重点是特定重量 (SG),pH,流体损失 (FL),水分离率 (WSR),过蛋糕厚度 (FCT) 和漏斗粘度 (FV).
- 使用界面摩擦特性和扫描电子显微镜 (SEM) 来分析泥性能和微观结构.
主要成果:
- 最佳的传统配方是10%的重量百分比的托尼特,0.3%的重量百分比的CMC和0.4%的重量百分比的Na2CO3.
- HEC显著增加了漏斗粘度 (FV) 和减少了流体损失 (FL),同时保持了可接受的SG,FCT和WSR.
- 与CMC相比,HEC表现出优越的pH稳定性,以及与泥矩阵的良好兼容性,由SEM证实.
结论:
- 酸是一种有前途的添加剂,用于管道提升中的粗类泥,特别是在高盐度和可变pH条件下.
- 该研究量化证明了依赖粘度的摩擦降低,突出显示了HEC的有效性.
- 在苛刻的地质环境中,HEC为提高泥性能提供了可行的替代方案.
更多相关视频
10:28Experimental Measurement of Settling Velocity of Spherical Particles in Unconfined and Confined Surfactant-based Shear Thinning Viscoelastic Fluids
Published on: January 3, 2014
13.8K
13:57Preparation and Friction Force Microscopy Measurements of Immiscible, Opposing Polymer Brushes
Published on: December 24, 2014
14.1K
相关概念视频
Superplasticizers
122
Superplasticizers are advanced admixtures that enhance the workability of concrete by lowering the water content without compromising the strength of the material. These substances are highly effective water reducers, improving concrete flow, making it easier to work with, and enabling concrete to reach inaccessible areas or densely reinforced sections without mechanical vibration. The key components in superplasticizers are either sulfonated melamine or naphthalene formaldehyde condensates,...
122
Design Example: Deciding Thickness of Lubricating Fluid in a Shaft
156
Effective lubrication between a rotating shaft and its bearing housing is essential in rotating machinery to minimize friction, wear, and energy loss. With carefully controlled thickness and viscosity, the lubricant layer prevents metal-to-metal contact, ensuring smooth operation.
To calculate the required thickness of the lubricant layer, the tangential velocity at the shaft's surface must first be determined. This velocity is calculated by converting the rotational speed to angular...
To calculate the required thickness of the lubricant layer, the tangential velocity at the shaft's surface must first be determined. This velocity is calculated by converting the rotational speed to angular...
156
Plasticizers
116
Water-reducers, or plasticizers, are chemical admixtures used in concrete to improve strength and workability. These additives reduce the water-cement ratio without compromising workability, lower the cement content while maintaining the same workability, or increase workability to assist concrete placement in inaccessible areas.
Plasticizers function by using surface-active agents to create repulsive electrostatic forces between cement particles. This dispersion enhances the concrete's...
Plasticizers function by using surface-active agents to create repulsive electrostatic forces between cement particles. This dispersion enhances the concrete's...
116
Types of Fluids
498
Fluids can be classified into Newtonian and non-Newtonian fluids based on their response to shear stress. Newtonian fluids have a linear relationship between shear stress and the shear strain rate, following Newton's law of viscosity. Their viscosity remains constant regardless of the shear rate, making their behavior predictable and easier to analyze. Common examples include water, air, oil, and gasoline.
In contrast, non-Newtonian fluids do not follow Newton's law of viscosity, and...
In contrast, non-Newtonian fluids do not follow Newton's law of viscosity, and...
498
Hydration of Cement
387
Hydration of cement is a chemical reaction between cement particles and water. This process occurs primarily through two mechanisms: through-solution and topochemical. In the through-solution process, anhydrous compounds dissolve into their constituents, hydrates form in the solution, and then precipitate from the supersaturated solution. The topochemical process involves solid-state reactions at the cement particle surface. The through-solution process dominates the topochemical process at the...
387
Dry Friction
468
Dry friction occurs between two solid surfaces in contact as they attempt to move relative to one another. In daily life, dry friction is encountered in various forms, such as when walking on the ground, sliding an object across a table, or rubbing hands together. Despite its ubiquity, the underlying mechanisms behind dry friction are not readily visible.
To illustrate this concept, imagine a wooden crate resting on a rough, non-uniform horizontal surface. When an external force is applied to...
To illustrate this concept, imagine a wooden crate resting on a rough, non-uniform horizontal surface. When an external force is applied to...
468
