矿产综合利用2024，Vol.45Issue(2)：46-51,58,7.DOI:10.3969/j.issn.1000-6532.2024.02.008
不同掺量铁尾矿对3D打印混凝土胶凝材料性能的影响
Effect of Iron Tailings with Different Content on the Properties of 3D Printing Concrete Cementitious Materials
张彬 1秦毅2
作者信息
- 1. 内蒙古交通职业技术学院 道路桥梁工程系,内蒙古 赤峰 024005
- 2. 辽东学院土木工程系 辽宁 丹东 118003
- 折叠
摘要
Abstract
This is an article in the field of ceramics and composites.Rheology and microstructure properties of iron-doped tailings 3D printing cementitious materials were studied in this paper.The results show that the particle size of tailings is small and can be used as aggregates for 3D printing materials.In the 3D printing process,it can smoothly pass through the pipeline for conveying the cementitious material.As the content of iron tailings continues to increase,the shear viscosity of 3D printing cementitious materials shows a trend that first decreases and then stabilizes in the region.However,the changing law of shear stress shows an increasing trend as the interval between layers increases.The compressive strength and flexural strength of 3D printing cementitious materials both show a decreasing trend.When the interval between layers is in between 20～30 min,the compressive strength and flexural strength decrease more slowly.As the interval between layers continues to increase,the interlayer bonding strength of 3D printing cementitious materials shows a decreasing trend.The 3D printing cementitious material with 30％iron tailings content is hydrated for 90 days after XRD diffraction test.The main material components of the cementitious material are quartz,ettringite,calcite,albite,perovskite,Ca2SiO4 and seven substances such as calcium silicate hydrate.关键词
陶瓷及复合材料/铁尾矿/3D打印胶凝材料/力学性能/流变性/微观结构性能Key words
Ceramics and composites/Iron tailings/3D printing cementitious materials/Mechanical properties/Rheological properties/Microstructure properties分类
矿业与冶金引用本文复制引用
张彬,秦毅..不同掺量铁尾矿对3D打印混凝土胶凝材料性能的影响[J].矿产综合利用,2024,45(2):46-51,58,7.
