高性能混凝土具有高度反应性的米灰和烟雾
Andres Salas Montoya1, Chul-Woo Chung2, Ji-Hyun Kim3
1Civil Engineering Department, Engineering and Architecture Faculty, Universidad Nacional de Colombia, Manizales 170003, Colombia.
Materials (Basel, Switzerland)
|June 10, 2023
概括
从农业废物中获得的高反应性大米灰 (TRHA) 显著提高了混凝土的强度和耐用性. 对于高性能混凝土应用,TRHA的性能与烟相美,为其提供经济和环境的好处.
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:
- 研究人员长期以来一直在寻找高性能混凝土的可持续,高质量的非晶体二氧化来源.
- 米灰 (RHA) 是一种从丰富的农业废物中提取的有前途的pozzolanic材料.
- 化学预处理和受控燃烧增强了RHA的反应性和无形结构.
研究的目的:
- 准备和评估一种高反应性大米灰 (TRHA),作为高性能混凝土中波特兰水泥的部分替代品.
- 为了比较TRHA与传统的米灰 (RHA) 和烟 (SF) 的性能.
主要方法:
- 通过化学洗和对大米的控制燃烧来制备TRHA.
- 加入RHA和TRHA作为高性能混凝土混合物的水泥替代品.
- 通过压力强度,屈曲强度和离子透测试来评估混凝土性能.
主要成果:
- 与对照混凝土相比,TRHA显著提高了混凝土的压力强度 (超过20%) 和屈曲强度 (46%).
- 在强度和离子透度方面,TRHA的性能与二氧化烟相美.
- 在TRHA和SF混凝土中使用聚乙烯-聚烯纤维增强物观察到协同效应.
结论:
- 准备好的TRHA是一种高效的高性能混凝土的高效波佐兰材料.
- TRHA提供了一种可持续且经济可行的替代烟的替代方案.
- 使用农业废物,如大米来生产混凝土,可以带来显著的环境效益.
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