竹茎灰作为轻型泡砂中可持续的水泥替代品,增强机械热和微观结构性质
Md Azree Othuman Mydin1, Nurul Zahirah Noor Azman2, Paul O Awoyera3
1School of Housing, Building, and Planning, Universiti Sains Malaysia, 11800, Penang, Malaysia. azree@usm.my.
Scientific reports
|October 6, 2025
概括
竹茎灰 (BSA) 增强了轻型泡砂 (LFM) 的性能,提供了更好的强度和绝热. 最佳的替代品是15%的BSA,平衡可持续建筑材料的性能.
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:
- 传统的补充水泥材料 (SCM),如飞灰和烟,具有局限性.
- 竹茎灰 (BSA) 具有独特的轻量特性和高含量.
- 越来越需要环保建筑材料来减少碳排放.
研究的目的:
- 研究用竹茎灰 (BSA) 部分替代水泥对轻型泡砂 (LFM) 的影响.
- 评估不同含量BSA (0-25%) 的LFM的新鲜,硬化和微尺度特性.
- 确定最佳的BSA替换水平,以平衡机械强度,耐用性和隔热.
主要方法:
- 轻型泡砂 (LFM) 标本用BSA替代普通波特兰水泥 (OPC) 准备,重量为0%,5%,10%,15%,20%和25%.
- 分析了新鲜性质 (可加工性,密度),硬化性质 (压力强度,吸水能力) 和微观结构特征 (SEM).
- 测量了导热率,以评估绝缘能力.
主要成果:
- 对LFM的最佳BSA替换水平被确定为15%,产生8.25MPa的压力强度 (比对照水平高7%).
- 密度降低到960kg/m3在20%BSA,而孔隙性增加到30.2%在25%BSA,增强轻量和绝缘性能.
- 热导率从0.25 W/mK (对照) 显著降低到0.18 W/mK在25%的BSA替换下.
结论:
- 竹茎灰 (BSA) 是一种可行的和环保的部分替代普通波特兰水泥 (OPC) 在轻型泡砂 (LFM).
- 对于要求结构完整性和隔热平衡的应用,建议使用10-15%的BSA替换范围.
- BSA有助于开发可持续的建筑材料,提高能源效率和减少建筑环境的碳足迹.
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