基于海洋疏沉积物的水泥基质矩阵:使用响应表面方法的热处理,物理性能和预测
Houssam Slimanou1, Abderrezak Bouziane2, Nedjima Bouzidi3
1Laboratory of Construction Engineering and Architecture (LGCA), Faculty of Technology, University of Bejaia, 06000, Bejaia, Algeria. houssam.slimanou@univ-bejaia.dz.
Environmental science and pollution research international
|March 10, 2025
概括
这项研究探讨了使用疏港口沉积物作为砂生产中可持续的pozzolanic材料. 烧焦沉积物增强砂增强砂.
科学领域:
- 可持续建筑材料 可持续建筑材料
- 环境工程环境工程
- 地质技术工程地质技术工程
背景情况:
- 疏对于港口维护至关重要,产生大量沉积物.
- 传统的海上疏沉积物的处置给环境带来了担忧.
- 将沉积物作为建筑材料的价值化提供了环境和经济上的好处.
研究的目的:
- 研究在可持续的砂生产中使用天然和烧焦的疏沉积物的潜力.
- 评估沉积物替代对新鲜和硬化的砂属性的影响.
- 为了评估沉积物修饰砂的波佐兰性行为和重金属固定性.
主要方法:
- 波特兰水泥 (CEM I 52.5 N) 被用未化 (S) 和化 (SC) 沉积物取代,其重量分别为10,20,30和40%.
- 使用X射线衍射 (XRD) 来分析沉积物的波佐兰性质.
- 机械性能 (压力和屈曲强度) 和浸出测试是在砂样本上进行的.
主要成果:
- 热处理 (化) 显著改善了沉积物的波佐兰活动.
- 与对照砂相比,使用10%重量%烧焦沉积物的砂表现出优越的机械性能.
- 压力强度为35.14 MPa (7天) 和47.99 MPa (28天) 在10%的SC.
- 在90天的固化过程中,屈曲强度达到9.17MPa.
- 漂水试验证实了砂基体内重金属的固定和稳定.
结论:
- 烧焦的疏沉积物可以有效地被用作砂生产中的可持续的波佐兰材料.
- 通过10%重量%的化沉积物替代,实现最佳性能,增强机械性能.
- 沉积物结合有效地固定重金属,确保环境安全和材料稳定性.
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