酸水泥的机械性质和水合度 酸水泥经过烧结石灰修改而成
Hongguang Zhang1, Wenya Yang2, Qiling Luo3
1State Key Laboratory of Hydraulic Engineering Intelligent Construction and Operation, Tianjin University, Tianjin 300072, China.
Materials (Basel, Switzerland)
|November 14, 2023
概括
河流疏的泥,经常被倾倒,可以增强酸水泥 (MKPC). 高达15%的烧结泥灰 (SSA) 提高了早期的强度和水分,为建筑材料提供了一个环保的替代品.
科学领域:
- 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.
- 环境科学 环境科学
背景情况:
- 河流疏的污泥处理对生态构成威胁.
- 疏泥的低利用率需要可持续的解决方案.
- 酸水泥 (MKPC) 提供快速设置和高早期强度.
研究的目的:
- 调查烧结泥灰 (SSA) 作为MKPC中的矿物添加剂的潜力.
- 评估SSA对MKPC机械性能和水合性的影响.
- 探索对水泥材料的疏泥的环保利用.
主要方法:
- 系统地研究SSA混合MKPC的机械性能和水分.
- 在早期 (1d,3d) 进行压力强度测试.
- 设置时间,X射线衍射 (XRD),扫描电子显微镜 (SEM) 和电阻测量.
主要成果:
- 压力强度随着SSA含量增加到15%,达到11.5% (1d) 和17.2% (3d) 的峰值,高于参考MKPC.
- SSA显著减缓了MKPC的水合,最显著的是10-15%的含量.
- SEM揭示了更密集的微观结构和更丰富的水化产品,添加了SSA (0-15%).
- XRD显示没有新的晶体相,电电阻证实延迟了早期水合.
结论:
- 可以有效地使用SSA作为矿物添加剂来修改MKPC.
- 最佳的SSA含量 (约15%) 提高了早期的压力强度,并加深了水合度.
- 增加SSA延迟了早期的水合,同时促进了更密集的微观结构,为泥利用提供了可持续的方法.
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