在地表层青混合物中利用由道污泥获得的回收花岩聚合物,通过与玄武岩混合混合
Yuqi Zhou1, Weiwei Liu1, Yanxia Nie1
1China Construction First Group Construction & Development Co., Ltd., Beijing 100102, China.
Materials (Basel, Switzerland)
|October 16, 2025
概括
从道泥中回收的花岩聚合物 (RGA) 可以有效地用于青混合物. 在可持续的道路建设中,建议将RGA与玄武岩聚合物混合,从而节省成本.
科学领域:
- 土木工程 土木工程是指土木工程.
- 材料科学 材料科学 材料科学
- 环境工程 环境工程
背景情况:
- 道建设产生了大量的泥,通常被处置为废物.
- 回收道污泥衍生的聚合物为建筑材料提供了一个可持续的解决方案.
- 使用回收聚合物减少了对原材料的依赖,并降低了对环境的影响.
研究的目的:
- 调查使用从道泥中回收的花岩聚合物 (RGA) 在表面层青混合物中的可行性.
- 为了评估含有与玄武岩聚合物混合的RGA的青混合物的性能.
- 确定青混合物的最佳RGA比例,并评估潜在的成本节约.
主要方法:
- 使用多重清洁技术制备RGA.
- 对RGA和RGA-玄武岩混合聚合物的材料性能的表征.
- 设计和性能评价的青混合物与不同的RGA比例.
- 与仅使用玄武岩聚合物的控制青混合物进行比较.
主要成果:
- 由于高SiO2含量 (70.88%) 导致RGA具有酸性.
- 多重清洁技术有效地减少了RGA中的泥含量.
- 含有40-70%RGA的混合聚合物符合中国的技术规格.
- 带有RGA的青混合物显示矿物聚合物 (VMA) 中空隙增加,表明聚合物结构改变.
结论:
- 将RGA与玄武岩混合是一种有效的策略,用于在青混合物中利用道泥.
- 对于没有额外增强的混合聚合物,建议使用40%的RGA体积比例.
- 当与水泥 (50%的填充体积) 相结合时,更高的RGA率 (70%) 是可行的.
- 对于青路面表面层来说,可以实现显著的成本节约 (≥26.56%),尤其是在长距离运输玄武岩聚合物时.
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