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硅酸盐通报 ›› 2021, Vol. 40 ›› Issue (9): 3029-3038.

• 资源综合利用 • 上一篇    下一篇

基于多重响应的钢渣超高性能混凝土组成优化设计研究

冯元1,2, 余睿1, 范定强1,3, 曾敏4,5, 胡方杰4,5, 水中和1, 王思雨1,2, 刘康宁1,2, 谭珺辉2, 王武峰6   

  1. 1.武汉理工大学,硅酸盐建筑材料国家重点实验室,武汉 430070;
    2.武汉理工大学材料科学与工程国际化示范学院,武汉 430070;
    3.武汉理工大学材料科学与工程学院,武汉 430070;
    4.中铁建大桥设计研究院,武汉 430063;
    5.中国铁建股份有限公司桥梁工程实验室,武汉 430063;
    6.中山市武汉理工大学先进工程技术研究院,中山 528400
  • 收稿日期:2021-03-17 修回日期:2021-04-07 出版日期:2021-09-15 发布日期:2021-10-08
  • 通讯作者: 余 睿,博士,研究员。E-mail:r.yu@whut.edu.cn
  • 作者简介:冯 元(2000—),女。主要从事超高性能混凝土的研究。E-mail:2235571847@qq.com
  • 基金资助:
    国家级大学生创新创业训练计划(S202010497007);中山市武汉理工大学先进工程技术研究院开放课题(WUT202004)

Optimized Design of Ultra-High Performance Concrete Incorporating Steel Slag Based on Multiple Response Approach

FENG Yuan1,2, YU Rui1, FAN Dingqiang1,3, ZENG Min4,5, HU Fangjie4,5, SHUI Zhonghe1, WANG Siyu1,2, LIU Kangning1,2, TAN Junhui2, WANG Wufeng6   

  1. 1. State Key Laboratory of Silicate Materials for Architectures, Wuhan 430070, China;
    2. International School of Materials Science and Engineering, Wuhan University of Technology, Wuhan University of Technology, Wuhan 430070, China;
    3. School of Materials Science and Engineering, Wuhan University of Technology, Wuhan 430070, China;
    4. China Railway Construction Bridge Design and Research Branch, Wuhan 430063, China;
    5. China Railway Construction Laboratory of Bridge Engineering, Wuhan 430063, China;
    6. Wuhan University of Technology Advanced Engineering Technology Research Institute of Zhongshan City, Zhongshan 528400, China
  • Received:2021-03-17 Revised:2021-04-07 Online:2021-09-15 Published:2021-10-08

摘要: 为实现生态型超高性能混凝土(UHPC)的组成优化和钢渣利用率的提高,将钢渣粉作为辅助胶凝材料,利用D-最优化设计方法制备生态型UHPC,并建立了UHPC的工作性能与抗压强度预测模型,以进行多重响应分析。最后借助预测模型,以低水泥用量、高钢渣粉利用率设计出了符合要求的生态型UHPC。结果表明:预测模型构建合理且准确度高,在预测模型中减水剂和硅灰对于工作性能影响程度较大,水泥、减水剂以及钢渣的交互作用对工作性能影响明显,钢渣粉的加入可增强工作性能;硅灰和钢渣粉对抗压强度影响显著,水泥和钢渣粉的交互作用对抗压强度的影响较小,随钢渣粉掺量的增加抗压强度存在最优值;优化的生态型UHPC的配比可以实现钢渣粉替代30%(质量分数)水泥,同时保证抗压强度130 MPa以上,工作性能260 mm以上。

关键词: 超高性能混凝土, D-最优化设计方法, 钢渣粉, 多重响应分析, 生态型, 性能预测

Abstract: In order to achieve the composition optimization of eco-type UHPC and the improvement of the utilization rate of steel slag, using steel slag as auxiliary gelled material, the eco-type UHPC was prepared by D-optimal design method and establish the workability prediction model and the compressive strength prediction model to carry out multiple response analysis. With the help of the prediction model, the eco-type UHPC with low cement consumption and high steel slag utilization rate is designed to meet the requirements. The results show that the prediction model is reasonable and accurate. In the prediction model, superplasticizer and silica fume have a great influence on the workability, the interaction of cement, superplasticizer and steel slag have obvious influence on the workability and the addition of steel slag powder enhances the workability. The influences of silica fume and steel slag powder om compressive strength are significant, the interaction of cement and steel slag has little effect on compressive strength and the optimal value of compressive strength exists with the increase of steel slag powder. The optimal ratio of the eco-type UHPC realizes the substitution of steel slag for 30% (mass fraction) cement, and ensure the compressive strength above 130 MPa and the working performance above 260 mm.

Key words: ultra-high performance concrete, D-optimal design method, steel slag powder, multiple response analysis, eco-type, performance prediction

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