基于RSM的建模,用于预测和优化纤维增强后期化自压缩混凝土的流态和机械性能
Sharanabasava Patil1, B Ramesh1, T Sathish2
1Department of Civil Engineering, Saveetha School of Engineering, Saveetha Institute of Medical and Technical Sciences, SIMATS, Chennai, 602 105, India.
Heliyon
|February 23, 2024
概括
本研究探讨了在自压缩混凝土 (SCC) 中使用废弃的后石聚合物 (LA) 和聚烯纤维 (PPF). 最佳的混合设计增强机械性能和耐用性,提供可持续的建筑解决方案.
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:
- 混凝土行业对环境的影响需要可持续的替代方案.
- 废物材料,如后石聚合物 (LA),为资源节约提供了潜力.
- 自压缩混凝土 (SCC) 需要特定的混合设计以获得最佳性能.
研究的目的:
- 调查在自压缩混凝土 (SCC) 中使用废旧石灰岩聚合物 (LA) 和聚烯纤维 (PPF) 的可行性.
- 评估不同LA和PPF含量的SCC的新鲜性,机械性和耐久性特性.
- 优化SCC混合设计,以提高性能和可持续性.
主要方法:
- 使用了响应表面方法 (RSM) 和中央复合设计 (CCD).
- 设计了13种不同LA (0-100%) 和PPF (0-2%) 含量的SCC混合物.
- 测试了新鲜度 (倾斜流量,V道,T500),机械 (压缩,分裂拉伸,曲强度) 和耐用性 (干燥收缩,化物透) 的性能.
主要成果:
- 后期石聚合物的含有线性减少了新鲜混凝土的可加工性.
- 通过特定的LA和PPF组合实现了最佳性能,例如,28%的LA和1.26%的PPF用于流.
- 压力强度在28.5%的LA和1.24%的PPF下增加了12.33%;屈曲强度在31.4%的LA和1.2%的PPF下增加了14.46%.
- 在特定的LA和PPF含量下观察到低干燥收缩和化物进入.
- 开发的模型经过实验验证,误差为<5%.
结论:
- 废弃的后石聚合物和聚烯纤维可以有效地用于自压缩混凝土.
- 优化的混合设计提高了机械性能和耐用性.
- 建议的25%的LA和1%的PPF混合物为可持续建筑提供了最佳的结果.
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