部分取代电子废弃物塑料混凝土的新鲜,硬化和耐久性特征的实验调查:采用机器学习方法的可持续概念
Md Hamidul Islam1, Zannatun Noor Prova1, Md Habibur Rahman Sobuz1
1Department of Building Engineering and Construction Management, Khulna University of Engineering & Technology, Khulna, 9203, Bangladesh.
Heliyon
|February 3, 2025
概括
本研究探讨使用电子废物 (电子废物) 作为混凝土中天然粗聚合物的替代品. 15%的替换水平显示出最佳的结果,产生了可持续的建筑材料,具有更好的耐用性.
科学领域:
- 材料科学 材料科学 材料科学
- 土木工程 土木工程是指土木工程.
- 环境科学 环境科学
背景情况:
- 电子废物 (电子废物) 的产生在全球范围内迅速增加,这给环境和健康带来了挑战.
- 需要可持续的解决方案来管理电子垃圾并减轻其负面影响.
- 研究电子废物作为建筑材料为废物价值化提供了潜在的途径.
研究的目的:
- 评估使用加工电子废物作为混凝土中天然粗聚合物的部分替代品的可行性.
- 评估电子废物融入对混凝土新鲜,硬化和耐久性质的影响.
- 利用机器学习模型,用电子废物聚合物预测具体性能.
主要方法:
- 准备了四种混凝土混合物,其中电子废物取代了NCA的质量为0%,10%,15%和20%.
- 测试了机械性能 (压力和裂抗拉强度).
- 通过水透性和电阻测试来评估耐用性.
- 线性回归 (LR) 和随机森林 (RF) 模型用于预测分析.
主要成果:
- 压力和拉力强度在28天内分别下降了13.41%-25.50%和11%-19.26%,电子废物更换率为10%-20%.
- 在300°C时,强度降低范围在15.26%-30.87% (压缩) 和10.52%-19.74% (拉力) 之间.
- 电阻率显著增加 (239.06%-478.82%),水的透性在15%的替换时得到改善.
- 与射频模型相比,LR模型显示出更高的预测准确度 (R2值).
结论:
- 将电子垃圾纳入混凝土中作为NCA的部分替代品是可行的.
- 电子垃圾的15%的替代水平产生了最有利的性能平衡,提高了耐用性.
- 电子垃圾混凝土显示出作为可持续建筑材料的潜力,需要进一步调查.
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