Preparation and properties of calcium silicate sound insulation board from vanadium-titanium iron ore tailings

Wang Changlong; Jing Jianlin; Qi Yang; Zhang Yuewen; Zheng Yongchao; Ma Jintao; Ping Haoyan; Zhai Yuxin; Liu Feng

doi:10.7513/j.issn.1004-7638.2023.03.016

Volume 44 Issue 3

Jun. 2023

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Article Navigation > IRON STEEL VANADIUM TITANIUM > 2023 > 44(3): 105-113

Wang Changlong, Jing Jianlin, Qi Yang, Zhang Yuewen, Zheng Yongchao, Ma Jintao, Ping Haoyan, Zhai Yuxin, Liu Feng. Preparation and properties of calcium silicate sound insulation board from vanadium-titanium iron ore tailings[J]. IRON STEEL VANADIUM TITANIUM, 2023, 44(3): 105-113. doi: 10.7513/j.issn.1004-7638.2023.03.016

Citation:

Wang Changlong, Jing Jianlin, Qi Yang, Zhang Yuewen, Zheng Yongchao, Ma Jintao, Ping Haoyan, Zhai Yuxin, Liu Feng. Preparation and properties of calcium silicate sound insulation board from vanadium-titanium iron ore tailings[J]. IRON STEEL VANADIUM TITANIUM, 2023, 44(3): 105-113. doi: 10.7513/j.issn.1004-7638.2023.03.016

Citation:

Wang Changlong, Jing Jianlin, Qi Yang, Zhang Yuewen, Zheng Yongchao, Ma Jintao, Ping Haoyan, Zhai Yuxin, Liu Feng. Preparation and properties of calcium silicate sound insulation board from vanadium-titanium iron ore tailings[J]. IRON STEEL VANADIUM TITANIUM, 2023, 44(3): 105-113. doi: 10.7513/j.issn.1004-7638.2023.03.016

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Preparation and properties of calcium silicate sound insulation board from vanadium-titanium iron ore tailings

doi: 10.7513/j.issn.1004-7638.2023.03.016

1.
School of Civil Engineering, Hebei University of Engineering, Handan 056038, Hebei, China
2.
State Key Laboratory of Solid Waste Reuse for Building Materials, Beijing Building Materials Academy of Science Research, Beijing 100041, China
3.
China Railway Construction Group Co., Ltd., Beijing 100040, China
4.
Construction Development Co., Ltd., China Railway Construction Group, Baoding 074207, Hebei, China

Received Date: 2022-12-28
Publish Date: 2023-06-30

Abstract

Abstract

In order to promote the comprehensive utilization of vanadium-titanium iron ore tailings (VTIOTs) with weak gelling activity, the preparation of calcium silicate sound insulation board (CSSB) using VTIOTs as the main raw material was investigated. Through particle size analysis, mechanical properties and other testing methods, the grinding characteristics of VTIOTs were studied, then composite cementitious materials (CCM) were prepared with VTIOTs, silica fume and cement, and then CSSB were prepared by steam curing with waste rubber powder and steel fiber as reinforcement materials, and the effects of reinforcement materials and layer structure on the properties of CSSB were explored. The results show that alkali melting can effectively improve the activity of silicon and aluminum in VTIOTs, and the highest concentrations of Si⁴⁺and Al³⁺are 17.27 mg/L and 6.80 mg/L, respectively. When the mix proportion of CCM∶VTIOTs∶cement∶SF = 2∶7∶1, the cement sand ratio = 1∶3, the water cement ratio = 0.5, and the 28-day compressive strength is 39.7 MPa. For the CSSB prepared from VTIOTs, when the volume content of steel fiber or rubber powder in the single layer sound insulation plate is 0.93% or 1%, the flexural strength reaches 8.0 MPa and 8.8 MPa, respectively, while for the dual addition the flexural strength is 6.1 MPa. The maximum flexural strength of multilayer structural plates prepared by pouring slurry with different ingredients in layers is 8.2 MPa. The flexural strength of CSSB prepared from VTIOTs meets the requirements of GB/T 7019-2014 and JC/T 564.1-2018 standard.
- vanadium titanium iron ore tailings,
- calcium silicate sound insulation board,
- composite cementitious materials,
- reinforcing material,
- layer structure

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References(19)

References

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