木质水泥复合材料的耐用性,其成分因石灰岩和稳定性杉碎片而改变
Tomáš Melichar1, Amos Dufka1, Karel Dvořák1
1Institute of Technology of Building Materials and Components, Faculty of Civil Engineering, Brno University of Technology, 602 00 Brno, Czech Republic.
Materials (Basel, Switzerland)
|January 8, 2025
概括
这项研究探讨了使用石灰岩 (LS) 和杉 (SC) 在木质水泥颗粒板 (CBP) 中. 结果表明,LS改善了微观结构和密度,而SC则增强了湿透性质,有利于长期CBP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.
- 木材科学 木材科学 木材科学
背景情况:
- 木混凝土复合材料 (WCC) 提供了可持续建筑材料的潜力.
- 在WCC中使用石灰石 (LS) 和稳定二次杉片 (SC) 的研究仍然不足.
- 了解长期材料的行为对于WCC应用至关重要.
研究的目的:
- 评估用LS和SCs修改的水泥粘合颗粒板 (CBPs) 的长期性能.
- 调查LS和SC对CBP属性的影响,包括密度,强度和湿度.
- 分析CBP随时间的推移而发生的微观结构和矿物学变化.
主要方法:
- 在碎片板配方中,水泥部分被10%的LS取代,而杉被7%的SC取代.
- 试验样本被暴露在实验室和外部环境中长达2年.
- 评估的属性包括密度,弹性模量,抗拉强度,湿度,矿物学和微观结构.
主要成果:
- 2年后,CBPs表现出更紧和更密集的微观结构,具有显著的碳化改善特性.
- 石灰岩 (LS) 对矩阵微观结构的发展产生了积极的影响,作为活性成分和惰性微填充剂.
- 稳定二级杉 (SCs) 改善了湿透性能,但拉伸强度略有降低.
结论:
- 石灰岩 (LS) 增强了水泥粘合颗粒板 (CBPs) 的微观结构和长期耐用性.
- 稳定二级杉 (SCs) 提高了CBPs的抗潮性,尽管在拉伸强度上有很小的权衡.
- 结合使用LS和SC,为开发先进的木质水泥复合材料提供了一个有前途的途径.
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