使用Box-Behnken设计技术优化混合水泥混凝土的强度
Solomon Oyebisi1,2, Mahaad Issa Shammas3, Mohammed Seyam4
1Civil Engineering and Geomatics Department, Durban University of Technology, Durban, South Africa. solomonO@dut.ac.za.
Scientific reports
|July 12, 2025
概括
优化混凝土混凝土设计使用SNA (Shea Nutshell Ash) 提高了强度和可加工性. 这项研究利用响应表面方法来确定混合水泥混凝土的最佳比例,实现了显著的改进.
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:
- 优化混凝土混合设计对于结构完整性和寿命至关重要.
- 调查混合水泥混凝土对混合变化的敏感性至关重要.
- 豆灰 (SNA) 作为波特兰石灰石水泥 (PLC) 的可持续部分替代品具有潜力.
研究的目的:
- 为了优化混凝土混凝土混凝土的倾斜和压力强度,采用SNA.
- 评估SNA作为PLC替代品对混凝土性能的影响.
- 使用响应表面方法来开发混凝土混合设计的预测模型.
主要方法:
- 利用响应表面的Box-Behnken设计方法来进行优化.
- 嵌入式SNA作为PLC的部分替代品,在5-15%重量级的替代水平.
- 研究的C25,C30和C40 MPa混合设计具有不同的粘合剂比率,水与粘合剂比率,粘合剂与聚合物的比率和固化年龄 (7-90天).
主要成果:
- 实现了优化的倾斜和压力强度,显著减少了倾斜 (40-63%) 和压力强度的增加 (约. 10%) 的情况.
- 在优化和实验变量之间显示出强烈的相关性 (R2为落的98.89%,压力强度的98.44%).
- 验证了响应表面模型对混凝土混合设计的预测准确度.
结论:
- 开发的响应模型有效地确定了与SNA混合水泥混凝土的最佳混合设计比例.
- 像SNA这样的再利用废物材料可以被有益地纳入混凝土混合物中.
- 这种方法有助于实现所需的压力强度,同时使用可持续材料.
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