实施修改的三重混合技术,以增强混凝土中使用M砂的回收聚合物的微结构
Balaji Sethupathi Sekar1, Prakash Chandar Sekaran2, Ravichandran Panruti Thangaraj2
1Department of Civil Engineering, College of Engineering and Technology, SRM Institute of Science and Technology, Kattankulathur, Tamil, Nadu-603203, India. bs3668@srmist.edu.in.
Environmental science and pollution research international
|April 27, 2025
概括
这项研究使用三重混合的补充水泥材料来增强回收聚合混凝土 (RAC). 修改后的RAC显示了强度和微观结构的改善,这表明使用25%至50%的回收混凝土聚合物的可持续建筑潜力.
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:
- 使用再生聚合混凝土 (RAC) 对于可持续建筑至关重要.
- 提高RAC属性需要有效的混合设计策略.
- M-sand,飞灰,GGBS和Alccofine提供了混凝土改造的潜力.
研究的目的:
- 为了研究RAC的机械性能和微观结构,使用三重混合物 (飞灰,GGBS,Alccofine) 与M-Sand.
- 评估不同回收混凝土聚合物 (RCA) 百分比 (25-100%) 对混凝土性能的影响.
- 评估使用RCA和补充水泥材料 (SCM) 生产可持续结构混凝土的潜力.
主要方法:
- 用不同的RCA百分比 (25-100%) 制造的混凝土样本.
- 三重混合添加剂 (飞灰,GGBS,Alccofine) 用作60%的水泥替代品.
- 进行了强度测试 (压力,拉力,曲,冲击,粘合) 和非破坏性测试.
- 进行了微结构和相组合分析 (SEM-EDX,XRD,FTIR).
主要成果:
- 增加的RCA含量减少了压力强度,因为粘合力较弱.
- 三重混合修改通过改善水合和粘合减轻了强度的降低.
- 微观结构分析揭示了修改后的RAC.中精细的孔隙结构和有利的形态.
- 经过特殊处理的回收聚合混凝土 (SRAC) 与原始RAC相比表现出优越的强度,并且在28天内与常规混凝土 (CC) 具有相似的强度.
结论:
- 将水泥部分替换为三重混合的SCM有效地提高了RAC性能.
- 优化RCA与SCM的整合 (25-50%) 为结构混凝土提供了一条可持续的路线.
- 修改后的三重混合方法提高了在建筑中使用RCA的可行性.
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