A novel method for precise determination of maximum particle loading fraction in highly concentrated suspensions

IF 10.9 1区工程技术 Q1 CONSTRUCTION & BUILDING TECHNOLOGY

Cement and Concrete Research Pub Date : 2024-09-05 DOI:10.1016/j.cemconres.2024.107658

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引用次数: 0

Abstract

Hypothesis

Accurately predicting the maximum particle loading fraction (ϕ_max) of a suspension remains a significant challenge in both theoretical modeling and industrial applications.

Experiments

We present a novel method that surpasses existing approaches by precisely determining ϕ_max through predicting the general suspension viscosity at a constant shear rate as a function of particle volume fraction. Our approach leverages boundary and initial conditions to pinpoint ϕ_max with precision.

Findings

The proposed model flawlessly captures viscosity behavior across the entire range of volume fractions without pre-assumptions or limitations, showcasing its remarkable versatility. We validate the efficacy of our method by comparing its predictions with established theoretical models and diverse experimental data for various suspensions, including nanofluids and yield stress fluids, as reported in the literature. This extends to the evaluation of crucial parameters related to ϕ_max within existing suspension viscosity models. Beyond its immediate applications, this approach opens avenues for exploring relationships between ϕ_max and other suspension properties, potentially leading to broader advancements in understanding or manipulating suspension rheological behavior in material science.

Abstract Image

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精确测定高浓度悬浮液中最大颗粒装载量的新方法

实验我们提出了一种超越现有方法的新方法，即通过预测恒定剪切速率下的一般悬浮液粘度作为颗粒体积分数的函数来精确确定ϕmax。我们的方法利用边界条件和初始条件来精确定位 ϕmax。研究结果所提出的模型能够完美地捕捉整个体积分数范围内的粘度行为，没有预先假设或限制，展示了其非凡的多功能性。我们将该方法的预测结果与已建立的理论模型以及文献中报道的各种悬浮液（包括纳米流体和屈服应力流体）的各种实验数据进行了比较，从而验证了该方法的有效性。这扩展到评估现有悬浮液粘度模型中与ϕmax 相关的关键参数。除了直接应用之外，这种方法还为探索 ϕmax 与其他悬浮液特性之间的关系开辟了途径，从而有可能在理解或操纵材料科学中的悬浮液流变行为方面取得更广泛的进展。

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来源期刊

Cement and Concrete Research 工程技术-材料科学：综合

CiteScore

20.90

自引率

12.30%

发文量

318

审稿时长

53 days

期刊介绍： Cement and Concrete Research is dedicated to publishing top-notch research on the materials science and engineering of cement, cement composites, mortars, concrete, and related materials incorporating cement or other mineral binders. The journal prioritizes reporting significant findings in research on the properties and performance of cementitious materials. It also covers novel experimental techniques, the latest analytical and modeling methods, examination and diagnosis of actual cement and concrete structures, and the exploration of potential improvements in materials.

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