实验研究了沙漠沙子的机械性能,通过添加剂和生物水泥的组合来改进
Wan-Jun Ye1, Xiao Fu2, Yun-Tao Wu1
1School of Architecture and Civil Engineering, Xi'an University of Science and Technology, Xi'an, 710054, Shaanxi, China.
Bioprocess and biosystems engineering
|July 8, 2024
概括
这项研究使用生物水泥 (酶诱导碳酸沉-EICP) 与添加剂增强沙漠沙子. 结果显示,强度和透性显著改善,为沙地区的建筑提供了可持续的解决方案.
科学领域:
- 土木工程 土木工程是指土木工程.
- 地质技术工程 地质技术工程
- 生物技术是生物技术.
背景情况:
- 生物水泥,特别是酶诱导碳酸沉 (EICP),是一种可持续的建筑材料.
- 沙漠沙子需要稳定,以便在建筑和地质技术应用中有效使用.
- 现有的沙子改善方法可能缺乏环境或经济可行性.
研究的目的:
- 研究EICP与添加剂相结合的疗效,以改善沙漠沙子的特性.
- 评估自来水在生物水泥化过程中作为溶剂的使用情况.
- 在生物水泥沙漠沙中确定添加剂和自来水的最佳比例.
主要方法:
- 使用EICP与各种添加剂对沙漠沙子样本的应用.
- 测试机械性能,包括不受限制的压力强度和剪切强度.
- 对碳酸沉和透性的分析.
- 显微镜检查以了解添加剂的作用.
主要成果:
- 显著增加了不受限制的压力强度 (高达130倍) 和剪切强度 (27.09%).
- 碳酸沉的明显改善 (4.39x) 和透率 (93.72x) 的大幅降低.
- 添加剂提供核化地点,提高EICP的效率;脱脂奶粉增加了强度,但影响了成本.
结论:
- 与添加剂相结合的EICP提供了一种高效的方法来改善沙漠沙子的特性.
- 龙头水适合生物水泥化,已确定最佳比例.
- 这种跨学科的方法为在富含沙子的环境中进行建筑提供了可持续的解决方案.
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