SiO2气凝和矿对泡混凝土性能的影响
Wanying Qu1,2, Kailu Liu1,3, Haoyang Zeng1,3
1School of Urban Construction, Wuhan University of Science and Technology, Wuhan, Hubei Province 430065, China.
Scientific reports
|March 30, 2025
概括
这项研究比较了纳米SiO2气凝泡混凝土 (NSAFC) 和扩展矿泡混凝土 (EPFC),发现NSAFC提供了优越的绝热和耐火性. 这两种添加剂都提高了机械强度,NSAFC显示出更均的孔结构.
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.
- 建筑材料 建筑材料
背景情况:
- 泡混凝土需要增强绝缘,强度和耐火性,以提高建筑性能.
- 纳米气凝 (NSA) 和扩展矿 (EP) 正在作为潜在的添加剂进行研究.
- 了解它们对泡混凝土性能的影响对于开发先进建筑材料至关重要.
研究的目的:
- 调查纳入NSA和EP对泡混凝土性能的影响.
- 为了比较纳米SiO2气凝泡混凝土 (NSAFC) 和扩展矿泡混凝土 (EPFC) 的性能.
- 分析干燥密度,吸水,机械性能,导热率,耐火性和微观结构的变化.
主要方法:
- 制备和测试含有不同百分比NSA和EP的泡混凝土.
- 对物理,机械,热和耐火性能进行全面分析.
- 使用扫描电子显微镜 (SEM) 进行微结构检查.
主要成果:
- 加入NSA增加了水的吸收,而EP显示了最初的增加,然后下降.
- 无论是NSA (10%) 还是EP (10%) 都降低了干燥密度.
- EP (6%) 和NSA (6%) 显著改善了28d曲和压力强度.
- 与EPFC相比,NSAFC表现出优越的绝热和耐火性能.
- 在NSAFC中,SEM揭示了更均的孔隙结构.
结论:
- 无论是NSA还是EP都可以提高泡混凝土的机械性能.
- NSAFC表现出优越的绝热性能和耐火性能.
- NSAFC的孔隙结构更加均,有助于其增强的特性.
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