含有再生HDPE的水泥复合材料的机械行为和预测建模
Omer Fatih Sancak1, Muhammet Zeki Ozyurt2
1Department of Construction Technology, Dogus University, Istanbul 34722, Turkey.
Polymers
|January 10, 2026
概括
本研究探讨在混凝土中使用高密度聚乙烯 (HDPE) 来回收塑料废物. 虽然HDPE降低了混凝土的强度和密度,但新的预测模型准确地估计了它对机械性能的影响.
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:
- 塑料废物,特别是高密度聚乙烯 (HDPE),是一个重大的环境挑战.
- 将塑料垃圾回收成建筑材料为废物管理提供了一个可持续的解决方案.
- 将回收材料纳入混凝土需要了解它们对机械性能的影响.
研究的目的:
- 调查使用HDPE颗粒作为混凝土中细聚合物的替代品的可行性.
- 量化不同HDPE替代率对混凝土物理和机械性能的影响.
- 开发和验证用于评估HDPE对水泥复合材料的影响的预测模型.
主要方法:
- 使用高密度聚乙烯 (HDPE) 颗粒来取代混凝土中的细聚合物,其体积分为10%,20%和30%.
- 进行了标准测试,以评估沉降,密度,压力强度,拉伸强度,屈曲强度,弹性模量和应变.
- 为模型开发创建了一个综合数据库,将实验结果与现有文献数据结合起来.
主要成果:
- 增加HDPE替代率导致压力强度 (12-34%),拉力强度 (7-23%),屈曲强度 (6-21%),弹性模量 (15-34%) 的降低.
- 轴向和侧向拉伸值增加了4-44%,而密度 (3-9%) 和沉降 (4-19%) 随着HDPE含量增加而下降.
- 开发的指数方程准确地预测了机械性能,在统计评估中表现优于现有模型.
结论:
- HDPE可以用作混凝土中的细聚合物替代品,有助于塑料废物回收利用.
- 虽然HDPE的加入对混凝土的机械强度有负面影响,但它对延展能力的影响是积极的.
- 提出的预测模型提供了一个可靠的工具,用于评估HDPE改性水泥复合材料的机械性能.
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