回收编织塑料袋废料和PET瓶废料作为再生骨料 混凝土中的纤维：一项实验研究

高桥 智明¹, 日本 大学¹, ²
1、日本大学院环境研究科
2、

摘要

本研究的目的是研究再生 PET瓶废料（RPET）和再生编织塑料袋废料（RWS）纤维增强再生骨料混凝土
（RAC）的潜在工程。目前，建筑和拆除垃圾（CDW）和塑料垃圾的数量正在迅速增加，并成为许多国家的负担。
目前的研究是努力减少固体废物的数量，作为废物管理和保护环境的良好解决方案。基于混凝土的力学性能和耐久
性评估RWS和RPET纤维对RAC的影响，实验结果表明，RPET和RWS纤维在碱性环境中具有很高的耐碱性，并
且在 90天后在RAC中没有表现出可检测到的降解。与不含纤维的RAC样品相比，硅灰（SF）和RPET纤维的组合
使RAC的抗压强度提高了 3.6-9%，弹性模量提高了 16.9-21.5%，劈裂拉伸强度提高了 11.8-20.3%，剪切强度提高
了 7-15%，而RWS纤维增强型RAC中的这些值较低。RWS和RPET纤维增强了RAC的后开裂行为。RPET对改善
RAC性能的贡献优于RWS纤维，尽管RWS纤维比RPET纤维具有更高的拉伸强度。此外，SF和所提出的混合技术
提高了 100%粗RCA的RAC的性能，并补偿了RPET和RWS纤维造成的抗压强度损失。

关键词

机械性能；再生 PET瓶纤维；再生骨料混凝土；再生编织塑料袋纤维

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