从古代技术到现代解决方案:用于砂岩保护的C-S-H在现场合成
Mengjun Jia1,2, Huimin Yan2,3, Qingqing Xu4
1Department of History of Science and Scientific Archaeology, University of Science and Technology of China, Hefei, 230026, China.
概括
这项研究开发了一种由古罗马技术启发的液压-酸盐-酸盐 (C-S-H) 接材料. 优化的C-S-H砂显示出与砂岩的良好兼容性,为保护贝山山洞提供了一个有前途的解决方案.
科学领域:
- 材料科学 材料科学 材料科学
- 遗产保护 遗产保护 遗产保护
- 地质化学 地质化学
背景情况:
- 液压-酸盐-酸盐 (C-S-H) 是历史性砂和现代水泥中的重要粘合剂.
- 古罗马建筑技术为开发先进的保护材料提供了洞察力.
- 水引起的侵蚀对像北山山洞这样的文化遗产构成重大威胁.
研究的目的:
- 开发基于C-S-H的新型接材料,用于遗产保护.
- 为了研究C-S-H砂和砂岩之间的界面相互作用.
- 优化C-S-H砂的性能,以便在贝山山洞中有效地应用.
主要方法:
- 分子动力学模拟来分析C-S-H/砂岩界面相互作用.
- 在现场合成C-S-H,其网状结构来自Ca(OH) 2 /二氧化烟.
- 系统地调查不同与二氧化 (C/S) 和水与粘合剂的比例.
- 实验室规模的实验,以评估材料的兼容性和性能.
主要成果:
- 在C-S-H/矿物界面的结对粘附至关重要.
- 通过0.8的C/S比率,2.0的水/粘合剂比率,1:3的粘合剂/聚合物比率和4重%的聚碳酸超塑化剂,实现了最佳的C-S-H砂性能.
- 证明了开发的C-S-H砂与砂岩的良好兼容性.
结论:
- 开发的C-S-H接材料是对贝山洞穴中水引起的损坏的潜在有效解决方案.
- 对于成功的遗产保护干预,物质兼容性至关重要.
- 材料设计,合成和分析的综合方法为开发量身定制的结合剂提供了一个框架.
相关概念视频
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01:29Strength and Heat of Hydration
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01:29Sulfate Attack on Concrete
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01:25Deleterious Substances in Aggregate
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