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修复砂的性能由硫酸和无形酸组成的修复砂
1Department of Civil Engineering, Kunsan National University, Kunsan 54150, Jeonbuk, Republic of Korea.
Materials (Basel, Switzerland)
|January 28, 2026
概括
无形氨酸盐 (ACA) 水泥在混凝土修复砂中表现优越,与硫氨酸盐 (CSA) 水泥相比. 基于ACA的维修材料为寒冷气候中的结构提供了增强的机械性能和出色的抗解能力.
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.
- 混凝土的耐用性 混凝土的耐用性
背景情况:
- 混凝土的恶化是基础设施的一个重要问题.
- 现有的维修方法缺乏系统的调查,特别是对于响应性材料.
- 基于酸盐的粘合剂为快速修复解决方案提供了潜力.
研究的目的:
- 使用硫氨酸 (CSA) 和无形氨酸 (ACA) 水泥制造和评估修复砂 (RMs).
- 评估这些新型RMS的机械性能和抗解能力.
- 研究粘合剂类型对水化产品和微观结构的影响.
主要方法:
- 用CSA和ACA结合剂和无水化石石膏制备了6个RM混合物.
- 测量了新鲜的RM特性 (流动性,设置时间).
- 硬化RM特性 (压力强度,屈曲强度,UPV) 在1,7和28天被测试.
- 使用ASTM C666.6来评估结解性.
- 进行了水化产品的微观结构分析.
主要成果:
- 与基于CSA的RM相比,基于ACA的RM表现出更高的机械强度和超声波脉冲速度 (UPV).
- 含有ACA的标本表现出明显更好的抗解能力,裂和裂纹最小.
- 含有CSA的标本在结解暴露后出现了相当大的恶化.
- 微观结构分析揭示了不同的水化产品影响材料性能.
结论:
- 无形合金 (ACA) 是快速混凝土修复材料的有希望的粘合剂,特别是在寒冷地区.
- 合金粘合剂的选择 (ACA与CSA) 极大地影响维修砂的机械性能和耐用性.
- 了解水化机制是选择最优修复材料的关键,用于恶化的混凝土结构.
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