通过利用塑料废物和玄武岩纤维,对环保塑料砂铺路块进行实验研究
Bawar Iftikhar1,2, Sophia C Alih3, Mohammadreza Vafaei1
1School of Civil Engineering, Universiti Teknologi Malaysia, 81310, Johor Bahru Johor, Malaysia.
Heliyon
|July 24, 2023
概括
回收的低密度聚乙烯塑料和沙子制造出环保的铺路板,减少废物和二氧化碳排放. 添加玄武岩纤维增强了强度,并降低了可持续建筑材料的吸水率.
科学领域:
- 材料科学 材料科学 材料科学
- 环境工程 环境工程
- 可持续建筑 可持续建筑
背景情况:
- 塑料废物由于其高生产率而对环境构成重大危害.
- 水泥生产约占全球二氧化碳排放量的8%.
- 回收塑料废弃物作为替代水泥材料提供了减少废弃物和减少碳足迹的战略.
研究的目的:
- 开发使用回收塑料废物 (低密度聚乙烯) 和沙子的无水泥,环保的铺路块.
- 为了研究玄武岩纤维对这些新型铺路板的性能的影响.
- 为了满足ASTM C902-15标准的轻型交通应用.
主要方法:
- 低密度聚乙烯 (LDPE) 废塑料被化并与沙子混合,以生产铺路板.
- 研究了LDPE与沙子的比率,玄武岩纤维含量和沙子颗粒大小的变化.
- 铺石块的压力强度,吸水能力和在不同温度 (060°C) 的性能进行了测试.
主要成果:
- 最佳的混合物包括30:70的LDPE与沙子的比率,最细的沙子产生了最高的压力强度.
- 包括0.5%的玄武岩纤维 (4毫米长) 增加了20.5%的压力强度,并减少了50.5%的吸水率.
- 铺石块在60°C时压力强度下降了20%,显示出热稳定性.
结论:
- 由回收的LDPE塑料和沙子制成的无水泥铺路块是一个可行的环保替代品.
- 添加玄武岩纤维显著改善了机械性能和耐用性.
- 这项创新通过减少塑料垃圾,降低二氧化碳排放,为低流量地区提供具有成本效益的建筑材料,为可持续发展做出了贡献.
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