Construction Test of Rapid Hardening Shotcrete in
Wushan Tunnel on ZhengzhouWanzhou Highspeed Railway

ZHAO Shuang, HONG Jinxiang, QIAO Min, WANG Wei, ZENG Luping, ZHAO Bin

doi:10.3973/j.issn.2096-4498.2020.S1.048

Tunnel Construction >

2020 , Vol. 40 >Issue S1: 369 - 373

DOI: https://doi.org/10.3973/j.issn.2096-4498.2020.S1.048

Construction Test of Rapid Hardening Shotcrete in Wushan Tunnel on ZhengzhouWanzhou Highspeed Railway

Expand

(1. Jiangsu Sobute New Materials Co., Ltd., Nanjing 211100, Jiangsu, China; 2. China Railway 18th Bureau Group Co., Ltd., Tianjin 300222, China)

Online published: 2020-09-16

Fold

Abstract

In order to reduce the construction cost, improve the shotcreting quality and support effect, the rapid hardening shotcrete (RHS) is prepared for Wushan Tunnel on ZhengzhouWanzhou Highspeed Railway. The project test is carried out on RHS prepared by earlystrength setting accelerator and nanomineral admixture. The testing results show that: (1) Compared with general shotcrete, the oncesprayed thickness of RHS is 33 mm higher, the rebound rate is 14.5% lower. (2) RMB 27 700 yuan of raw material cost and 24 h of working procedure time can be saved for 30 m long tunnel shotcreting, and the economic benefit is notable.

Key words： highspeed railway tunnel; rapid hardening shotcrete; sprayed thickness; rebound rate; working procedure time

Cite this article

ZHAO Shuang, HONG Jinxiang, QIAO Min, WANG Wei, ZENG Luping, ZHAO Bin . Construction Test of Rapid Hardening Shotcrete in Wushan Tunnel on ZhengzhouWanzhou Highspeed Railway[J]. Tunnel Construction, 2020 , 40(S1) : 369 -373 . DOI: 10.3973/j.issn.2096-4498.2020.S1.048

Options

Outlines

〈

〉

模态框（Modal）标题

Abstract

Cite this article