关于水泥与不同C3A比率和不同减少水的添加剂的相互作用的实验和建模研究 使用op-ANN和各种机器学习方法
Veysel Kobya1, Hasan Tahsin Öztürk2, Kemal Karakuzu3
1Department of Civil Engineering, Bursa Uludag University, 16059 Bursa, Turkey.
Polymers
|March 14, 2026
概括
研究人员利用机器学习优化了聚碳酸减水添加剂 (WRA) 和水泥相互作用. 优化的人工神经网络 (opANN) 与开普勒优化 (KOA) 实现了对具体性能的最高预测准确性.
科学领域:
- 材料科学 材料科学 材料科学
- 化学工程是化学工程的重要组成部分.
- 土木工程 土木工程是指土木工程.
背景情况:
- 聚碳酸基降水添加剂 (WRA) 对混凝土性能至关重要,但面临与波特兰水泥的兼容性问题.
- 诸如初始流量低,出血和暴跌损失等挑战阻碍了WRA的有效性.
- 现有的研究缺乏对输入参数减小和对水泥系统的先进元启发式优化进行重点研究.
研究的目的:
- 为了研究WRAs和CEM I 42.5R波特兰水泥之间的相互作用.
- 通过使用新的元启发算法,优化水泥系统中的输入参数.
- 开发先进的,可解释的机器学习模型来预测WRA与水泥的兼容性.
主要方法:
- 合成了25个WRA来丰富机器学习 (ML) 模型输入.
- 为高级预测模型开发生成了750条条目数据集.
- 实施了三倍分割数据集策略和5倍交叉验证,用于模型验证.
- 评估了10个用于优化人工神经网络 (opANN) 的超参数优化的元启发术.
- 使用Shapley添加式解释 (SHAP) 来实现模型的解释性.
主要成果:
- 优化人工神经网络 (opANN) 在测试数据集上表现出卓越的预测性能.
- 开普勒优化算法 (KOA) 证明在ANN超参数优化中最有效.
- SHAP分析量化证实了酸盐和硫酸盐组的风质贡献.
- 开发的模型实现了WRA-水泥相互作用的高预测精度.
结论:
- 先进的ML模型,特别是使用KOA优化的opANN,显著提高了WRA-cement兼容性预测.
- 该研究为控制混凝土性能的化学相互作用提供了可解释的见解.
- 通过优化添加剂设计,研究结果有助于开发更可靠和可持续的混凝土实践.
更多相关视频
相关概念视频
Hydration of Cement
1.2K
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...
1.2K
Aggregate Cement Ratio
625
The Aggregate Cement ratio refers to the weight of aggregate divided by the weight of cement in a concrete mix. Altering this ratio has profound effects on the concrete's properties. This ratio plays a pivotal role in determining the strength, workability, and durability of concrete. When the Aggregate Cement ratio is higher, the mix is leaner, meaning it has less cement paste to lubricate the aggregate, potentially making the concrete less workable. Such mixes, known as lean, enhance the...
625
Water Cement Ratio
1.3K
The water-cement ratio is pivotal in defining concrete's quality. This ratio, a balance between the weight of water and cement in the mix, shapes the concrete's strength, durability, and resistance to environmental factors. As identified by Abrams’ law, less water in the mix equates to stronger concrete. However, water is essential not only for the chemical process of hydration but also for the concrete's workability and compaction. While hydration chemically binds water and...
1.3K
Types of Cement I
442
Portland cement comes in several types, each with distinct properties and applications based on their chemical composition and hydration characteristics:
Type I (Ordinary Portland Cement) is widely used for general construction where special properties are not required. It has moderate sulfate resistance and heat of hydration.
Type II (Modified Cement) offers moderate resistance to sulfate attack and a lower rate of heat development compared to Type I. It is suitable for structures in...
Type I (Ordinary Portland Cement) is widely used for general construction where special properties are not required. It has moderate sulfate resistance and heat of hydration.
Type II (Modified Cement) offers moderate resistance to sulfate attack and a lower rate of heat development compared to Type I. It is suitable for structures in...
442
Alkali Aggregate Reaction in Concrete
683
The alkali-aggregate reaction in concrete involves natural siliceous minerals in aggregates reacting with alkaline hydroxides derived from cement alkalis. This reaction forms an alkali-silica gel that absorbs water, swells, and increases in volume, which is confined by the surrounding cement paste, creating internal pressures that crack and disrupt the concrete. The extent of expansion and damage can be partly attributed to the alkali-silica reaction's osmotic hydraulic pressure and the...
683
Pozzolans
666
Pozzolans are siliceous or aluminous materials blended with Portland cement. They interact with the calcium hydroxide produced during the hydration of Portland cement and contribute to improved strength and durability of concrete. The pozzolanic activity, a measure of a pozzolan's effectiveness, is typically assessed using the strength activity index, as defined in ASTM C 618-93, which calculates the ratio of the compressive strength of cement mixtures with and without pozzolan.
Fly ash is...
Fly ash is...
666


