使用从高密度聚乙烯和聚烯塑料废弃物中获得的颗粒状材料作为在水泥系统中的聚合物进行调查
Şemsi Yazıcı1, Göksu Pılsım1, Hatice Gizem Şahin2
1Civil Engineering Department, Ege University, İzmir 35100, Türkiye.
Polymers
|February 27, 2026
概括
回收的高密度聚乙烯 (HDPE) 和聚烯 (PP) 塑料聚合物提高了砂的可加工性,但降低了强度. 对于可持续的建筑材料来说,10%的替代水平是最佳的.
科学领域:
- 材料科学 材料科学 材料科学
- 环境科学 环境科学
- 土木工程 土木工程是指土木工程.
背景情况:
- 塑料垃圾的积累构成了全球环境威胁.
- 在建筑中再利用塑料垃圾提供了一个可持续的解决方案.
- 回收塑料有可能取代建筑材料中的传统聚合物.
研究的目的:
- 调查使用回收高密度聚乙烯 (HDPE) 和聚烯 (PP) 作为砂中部分聚合物的替代品的可行性.
- 为了评估这些塑料聚合物的对砂物理和机械性能的影响.
- 为了确定最佳的更换百分比,以提高性能.
主要方法:
- 准备了七种砂混合物,其中10%,20%和30%的石灰岩聚合物用HDPE和PP进行体积替换.
- 评估的属性包括流量值,单位重量,吸水率,孔径,压力强度,屈曲强度和毛细血管吸水率.
- 结果与没有塑料聚合物的对照混合物进行了比较.
主要成果:
- 塑料聚合物显著提高了砂的可加工性 (流量增加了9%-13%),并减少了单位重量 (15%-15.3%).
- 压力和屈曲强度随着塑料含量增加而大幅下降 (分别为48%30%和46%54%)
- 随着HDPE和PP聚合物的添加,水吸收和孔径值增加.
结论:
- 将再生HDPE和PP作为砂中部分聚合物的替代品,提高了可加工性,降低了密度.
- 虽然对可加工性有好处,但塑料聚合物对机械强度有负面影响,并增加吸水率.
- 10%的替代水平被确定为可持续砂应用中平衡性能特征的最佳水平.
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