探索利用PHC堆废混凝土作为填充剂在青杆中的利用
Botao Tu1, Xinkui Yang2, Shi Xu3,4
1Guangdong Hongye Building Materials Technology Co., Ltd., Yunfu 527121, China.
Materials (Basel, Switzerland)
|November 25, 2023
概括
PHC堆废混凝土 (PPWC) 可以取代石灰石填充剂在青混合物中,为道路建设提供可持续的解决方案. 虽然提高了高温稳定性,但PPWC青杆显示了低温破裂阻力降低.
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.
- 环境工程 环境工程
背景情况:
- 通过利用固体废物代替石灰石填充剂在青混凝土中,可以降低道路建设成本.
- 这种方法提高了固体废物材料的回收率.
研究的目的:
- 调查使用PHC堆废混凝土 (PPWC) 作为石灰石填充剂在青混合物中的替代品的可行性.
- 评估PPWC对青杆的物理和风质性质的影响.
主要方法:
- PPWC被加工成填充剂颗粒 (<0.075毫米).
- 对PPWC和石灰石填料的物理性质,颗粒特征和化学成分进行比较分析.
- 青柱以不同的填料-青体积比率 (20%,30%,40%) 准备.
- 测试物理性质,高温风湿性行为和低温破裂性.
主要成果:
- 与石灰石填充剂相比,PPWC填充剂表现出更粗的表面,更低的密度和更小的颗粒大小.
- 使用PPWC填充剂的青杆显示透率和可塑性较低,软化点更高.
- PPWC填充青杆显示了增强的高温稳定性,但降低了低温破裂阻力.
- 发现PPWC填充青杆的粘度对温度变化更敏感.
结论:
- 在青混合物中,PHC堆废混凝土 (PPWC) 是石灰石填充物的可行替代品.
- 在青中使用PPWC有助于通过重新利用废物材料来建设环保的道路.
- 可能需要进一步的研究来优化PPWC的使用,以提高低温性能.
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