在不同的固化方案下,含有玄武岩的可持续的索兰石水泥的机械性能和光衰减能力不同
Ahmed Abd Al-Aziz1, F I El-Hosiny1, Alaa Mohsen2
1Chemistry Department, Faculty of Science, Ain Shams University, Cairo, Egypt.
Scientific reports
|December 7, 2025
概括
玄武岩粉为混合水泥提供了一个可持续的替代补充水泥材料 (SCM). 最佳的20%的玄武岩含量提高了压力强度,并提供了有效的马射线屏蔽,特别是在热水固化过程中.
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.
- 可持续建筑 可持续建筑
背景情况:
- 传统的补充混凝土材料 (SCM),如二氧化烟雾,渣和飞灰正在面临稀缺.
- 越来越需要在水泥生产中找到可持续和环保的替代品.
研究的目的:
- 调查玄武岩粉作为混合水泥的新型SCM.
- 评估基岩混合水泥的机械性能,新鲜特性和辐射屏蔽能力.
- 评估基岩混合水泥适用于使用热水固化处理的预制应用的适用性.
主要方法:
- 水泥被10%,20%和30%的玄武岩粉末所取代.
- 测量了新鲜性质 (可加工性,定位时间) 和压力强度.
- 在140°C,170°C和200°C进行了3小时的热水固化.
- 使用XRD,TGA/DTGA,SEM/EDX和BET进行了微结构和相位分析.
- 评估了对137Cs的马射线屏蔽性能.
主要成果:
- 加入玄武岩降低了可加工性和延长了定时间.
- 20质量%的玄武岩产生了最佳的压力强度 (在28天内达到69MPa).
- 在170°C下3小时的热水固化产生了与正常固化的强度相当的强度.
- 基岩混凝土水泥表现出增强的马射线屏蔽 (线性衰减系数增加11%,半值层减少10%).
结论:
- 盐粉是一种可行的和可持续的SCM,提高水泥性能.
- 热水固化对于基岩混合水泥的预制应用是有效的.
- 玄武岩混合水泥具有作为可持续的SCM和辐射屏蔽材料的双重功能.
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