改性超精细水泥料 (MUCG) 的整体性能优化和水化机制分析
Junxia Zhou1,2, Lanchang Zha2, Shiyu Meng2
1Ordos Institute of Liaoning Technical University, Ordos, China.
PloS one
|October 3, 2024
概括
一种改性超细水泥 (MUCG) 已被开发用于微裂岩质量. 最佳的MUCG混合物通过特定的微观结构发展增强了早期的强度和长期的稳定性,改善了岩石质量的强化.
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
- 土木工程 土木工程是指土木工程.
背景情况:
- 将粘合剂注入到微裂纹岩层中,带来了重大挑战.
- 开发先进的接材料对于有效的岩石质量增强至关重要.
研究的目的:
- 开发和优化改造的超细水泥料材料 (MUCG) 用于微裂岩质量.
- 研究优化MUCG的微观结构演变和机械性能随着时间的推移.
主要方法:
- 使用极端差异和多重线性回归分析的组成部分优化.
- 通过X射线衍射 (XRD),富里埃变换红外光谱 (FTIR),布鲁纳乌尔埃梅特泰勒 (BET) 和扫描电子显微镜 (SEM) 进行微结构性表征.
- 评估各种固化年龄的流动性和机械性能.
主要成果:
- 确定了一种最佳的MUCG混合物,包括超细水泥,PVA纤维,超塑化剂,二氧化烟雾,本托尼特和设置加速器.
- 早期的强度发展归因于C-(A) S-H凝,CH和AFt阶段的形成.
- 微观结构分析显示,随着时间的推移,孔隙性和特定表面积的减少,中孔孔进化显示出最初的增加,随后的减少.
- 由于微裂的形成,在第3天和第7天之间发生了轻微的强度下降,随后在第28天强度增加了10.66%.
结论:
- 开发的MUCG表现出有利的早期强度和长期稳定性,用于微裂纹岩石质量接.
- 微观结构的演变,包括阶段形成和孔隙结构的变化,决定了的机械性能.
- 这些发现为在具有挑战性的地质条件下地强化的机制提供了宝贵的见解.
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