在不同加载速度下对改性石的机械性能进行实验研究
Bo Zhang1,2,3, Chaohua Xu4,5,6, Qin Wu4,5,6
1School of Civil Engineering and Architecture, Guizhou Minzu University, Guiyang, 550025, China. zhangbo_dzs@126.com.
Scientific reports
|December 31, 2024
概括
改性石 (MG) 在不同的负载率下表现出独特的机械行为,从爬行到准静态条件的过渡. 增加加载率提高了强度特性,为其在工程应用中的使用提供了洞察力.
科学领域:
- 材料科学 材料科学 材料科学
- 地质技术工程 地质技术工程
- 环境工程 环境工程
背景情况:
- 石 (PG) 是酸生产的主要工业固体废物.
- 改性 (MG) 显示了环境可持续性和工程应用的潜力.
- 了解MG在不同负载条件下的机械性能对于其利用至关重要.
研究的目的:
- 为了研究在各种单轴压缩负载率下修改的 (MG) 的机械性能.
- 分析负载率对MG的应力,应变和能量特征的影响.
- 为工程应用MG作为建筑材料提供理论基础.
主要方法:
- 单轴压缩测试是在修饰的基石膏 (MG) 上进行的.
- 应用了四种不同的负载率:0.03,0.06,0.12和0.6mm/min.
- 分析了机械反应,包括压力-应变行为和能量演变.
主要成果:
- MG表现出0.03毫米/分钟的爬行,0.12-0.6毫米/分钟的准静态负载,以及0.06毫米/分钟的过渡行为.
- 裂纹启动应力,损伤应力和峰值强度随着负载率的增加而增加,幅度的减少.
- 弹性应变能量稳步增加,而总和消耗性应变能量呈现下降,随后随着负载率上升而缓慢增加.
结论:
- MG的机械性能受到负载率的显著影响,决定了它的变形行为.
- 该研究提供了不同负载场景下MG强度和能量特征的关键数据.
- 这些发现支持改性石作为可持续建筑材料的可行工程应用.
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