关于基石酶诱导碳酸盐沉 (EICP) 固化的可行性的实验研究
Tao Dang1,2, Yuanzhu Ji3, Yuanquan Guo4
1School of Highways, Chang'an University, Xi'an, 710064, Shaanxi, China.
Scientific reports
|August 13, 2025
概括
石增强了酶诱导的沉 (EICP) 固化,提高了其强度和水稳定性. 用1.0%的石膏获得最佳效果,强度增加了19.7%.
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
- 生物技术是生物技术.
背景情况:
- 由于其机械性能差以及对水的敏感性,土在施工中存在挑战.
- 酶诱导沉 (EICP) 是一种生物水泥化技术,使用微生物过程沉碳酸,加强土壤.
- 基石是一种肥料生产的副产品,具有作为土壤修正物的潜力,但需要仔细的整合.
研究的目的:
- 为了研究石对EICP固化的增强效应.
- 在EICP过程中确定尿素,化和的最佳比例.
- 为了阐明化石对EICP处理的的增强背后的微机制.
主要方法:
- 机械测试,包括未受限制的压力强度 (UCS),水稳定性和剪切强度测量.
- 显微镜分析,以检查固化的微观结构和毛孔填充特征.
- 系统地改变尿素,化和的度,以确定最佳的混合比例.
主要成果:
- 基石显著改善了EICP固化的UCS,水稳定性,剪切强度和压缩特性.
- 发现,合稳定最佳的合石含量为1.0%,与单独EICP相比,UCS增加了19.7%.
- 微观结构分析显示,碳酸晶体填充了土壤毛孔,减少了多孔性,而合石膏水化增强了颗粒凝固.
结论:
- 将合石膏纳入EICP生物水泥中是一种有效的策略,可以增强土的土壤特性.
- 联合EICP-合石膏处理为提供了优越的强度和耐久性改善.
- 该研究提供了一种使用工业副产品可持续改善土壤的有希望的方法.
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