关于含有木灰,烟,飞灰和塑料废物的绿色混凝土特性的实验研究
Hamza Shams1, Yanjun Qiu1, Hamid Abdrhman1
1Highway Engineering Key Lab of Sichuan Province, School of Civil Engineering, Southwest Jiaotong University. Chengdu, P R of China.
Science progress
|May 2, 2025
概括
这项研究探讨了利用木灰,烟和飞灰等废物材料来制造可持续混凝土. 这些对水泥和聚合物的环保替代品为环境带来了显著的好处.
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.
- 环境科学 环境科学
背景情况:
- 越来越多的人对混凝土的需求使自然资源受到压力.
- 废物材料带来了处置挑战和环境问题.
研究的目的:
- 调查利用废物 (木灰,烟,飞灰,塑料聚合物) 作为混凝土生产中部分替代水泥和聚合物的可行性.
- 评估这些更换对普通水泥混凝土 (NCC),自压缩混凝土 (SCC) 和轻质自压缩混凝土 (LWSCC) 的机械性能和流动性的影响.
主要方法:
- 开发了20个不同的混凝土混合设计,包含不同百分比的木灰 (WA),烟 (SF),飞 (FA) 和废塑料聚合物.
- 评估了所有测试的混凝土混合物的流动性和机械性能 (压力,分裂拉力和屈曲强度).
- 结果与既定行业标准进行比较,例如EFNARC对SCC和LWSCC的指导方针.
主要成果:
- 在NCC中,10%的二氧化烟雾替换优化了机械强度. 适度添加飞灰和木灰导致可接受的强度降低.
- 与10%的SF,20%的FA和高达15%的WA混合的SCC显示强度略有下降,但在EFNARC限制内保持流动性.
- 包含25-100%塑料粉,5%WA,10%SF,20%FA和30%塑料聚合物的LWSCC显示强度,流动性和密度降低,但仍保持在可接受的参数范围内.
结论:
- 废物可以有效地被用作各种混凝土类型 (NCC,SCC,LWSCC) 的水泥和聚合物的部分替代品.
- 这种方法大大减少了水泥和自然资源的消耗,有助于更可持续的建筑实践.
- 该研究强调了将废弃材料纳入混凝土配方的重大环境益处.
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