Experimental study on mechanical properties of high-titanium heavy slag tunnel shotcrete

Yang He; Chen Wei; Ma Shuangshi; Xie Xiaopeng; Li Fuliang; Guo Junhuai

doi:10.7513/j.issn.1004-7638.2023.03.018

Volume 44 Issue 3

Jun. 2023

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Yang He, Chen Wei, Ma Shuangshi, Xie Xiaopeng, Li Fuliang, Guo Junhuai. Experimental study on mechanical properties of high-titanium heavy slag tunnel shotcrete[J]. IRON STEEL VANADIUM TITANIUM, 2023, 44(3): 118-122. doi: 10.7513/j.issn.1004-7638.2023.03.018

Citation:

Yang He, Chen Wei, Ma Shuangshi, Xie Xiaopeng, Li Fuliang, Guo Junhuai. Experimental study on mechanical properties of high-titanium heavy slag tunnel shotcrete[J]. IRON STEEL VANADIUM TITANIUM, 2023, 44(3): 118-122. doi: 10.7513/j.issn.1004-7638.2023.03.018

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Experimental study on mechanical properties of high-titanium heavy slag tunnel shotcrete

doi: 10.7513/j.issn.1004-7638.2023.03.018

Yang He^{1, 2
,},
Chen Wei^{2
,
,},
Ma Shuangshi³,
Xie Xiaopeng¹,
Li Fuliang¹,
Guo Junhuai¹

1.
China Railway Tunnel Stock Co. ，Ltd., Zhengzhou 450001, Henan, China
2.
School of Civil and Architectural Engineering, Panzhihua University, Panzhihua 617000, Sichuan , China
3.
Gezhouba Group Eco-environmental Protection Co. ,Ltd. ,Wuhan 430030 ,Hubei, China

Received Date: 2022-07-24
Publish Date: 2023-06-30

Abstract

Abstract

Using high-titanium heavy slag as aggregate to make high-titanium heavy slag tunnel shotcrete. Experiments show that when the content of fly ash and steel fiber is constant, within the range of water-binder ratio of 0.34 to 0.4, the suitable water-binder ratio of high titanium heavy slag tunnel shotcrete is 0.38. The addition of wave-shaped steel fibers can enhance the mechanical properties of the high-titanium heavy slag tunnel shotcrete and reduce the rebound rate of the high-titanium heavy slag tunnel shotcrete. High-titanium heavy slag tunnel sprayed concrete spray products are mainly C-S-H gel and ettringite. C-S-H gel and ettringite fill the gap between high-titanium heavy slag crushed stone and high-titanium heavy slag sand, and wrap steel fibers to form The denser whole improves the flexural strength and splitting strength of the high-titanium heavy slag tunnel shotcrete, and reduces the rebound rate of the high-titanium heavy slag tunnel shotcrete.
- high titanium heavy slag,
- tunnel shotcrete,
- mechanical properties,
- rebound rate

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References(14)

References

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