在地质聚合物砂和沙子接口上对剪切行为的实验和数值分析
Furkan Bayındır1, Enes Ekinci2, Talha Sarıcı1
1Department of Civil Engineering, Inonu University, Malatya, Turkey.
Scientific reports
|January 31, 2026
概括
这项研究优化了地质聚合物砂 (GPM) 生产,以提高土壤界面剪切性能. 碎石聚合物和较低的/粘合剂比率显著改善了GPM特性和与沙土的摩擦.
科学领域:
- 地质技术工程 地质技术工程
- 材料科学 材料科学 材料科学
- 可持续建筑 可持续建筑
背景情况:
- 地质聚合物砂 (GPM) 为传统水泥提供了一个可持续的替代品.
- 了解GPM与土壤的接口特性对于其在地质工程项目中的应用至关重要.
- 生产参数显著影响GPM的机械和物理特性.
研究的目的:
- 调查NaOH度,聚合物类型和/粘合物比对GPM特性的影响.
- 为了评估GPM和沙土之间的界面上的切削性能.
- 使用数值建模验证实验发现.
主要方法:
- 地质聚合物砂 (GPM) 样本以不同的NaOH度 (5-15M),聚合物类型 (河流聚合物,碎石,建筑和拆除废物) 和/粘合物比率 (0.5-0.6) 准备.
- 压力强度,水吸收和超声波脉冲速度 (UPV) 测试是在经过固化的GPM样本上进行的.
- 进行了直接切割盒测试,以确定GPM-沙土界面的切割强度.
- 在ABAQUS中使用有限元法 (FEM) 建模来模拟土壤-GPM相互作用.
主要成果:
- 用15M NaOH激活的GPM,使用碎石聚合物和/粘合剂比为0.5,表现出最大的压力强度 (43.6 MPa) 和最小的吸水率 (3.78%).
- 聚合物类型按顺序影响了属性:碎石 > 溪流聚合物 > 建筑和拆除废物.
- 将/粘合剂比率降低到0.5并使用碎石聚合物增强了沙子-GPM摩擦角度.
- UPV与压力强度和水吸收有正相关性.
结论:
- 生产参数,特别是NaOH度,聚合物类型和/粘合物比率,极大地影响了GPM的性能.
- 优化的GPM配方显著提高了土壤界面的剪切性能.
- 经过验证的FEM模型可以可靠地预测土壤-GPM相互作用,以进一步优化设计.
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