Investigation on Modification of Bentonite to Improve Performance for Civil Engineering Mud

ZHANG Ran; SONG Guangyi; LIU Yan; HU Hongjie

doi:10.13779/j.cnki.issn1001-0076.2023.04.010

2023 Vol. 43, No. 4

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Article navigation > Conservation and Utilization of Mineral Resources > 2023 > 43(4): 96-100

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ZHANG Ran, SONG Guangyi, LIU Yan, HU Hongjie. Investigation on Modification of Bentonite to Improve Performance for Civil Engineering Mud[J]. Conservation and Utilization of Mineral Resources, 2023, 43(4): 96-100. doi: 10.13779/j.cnki.issn1001-0076.2023.04.010

Citation:

ZHANG Ran, SONG Guangyi, LIU Yan, HU Hongjie. Investigation on Modification of Bentonite to Improve Performance for Civil Engineering Mud[J]. Conservation and Utilization of Mineral Resources, 2023, 43(4): 96-100. doi: 10.13779/j.cnki.issn1001-0076.2023.04.010

Investigation on Modification of Bentonite to Improve Performance for Civil Engineering Mud

1.
Zhengzhou Institute of Multipurpose Utilization of Mineral Resources, CAGS, Zhengzhou 450006, China
2.
National Engineering Center for Multipurpose Utilization of Non−Metallic Miner al Resources, Zhengzhou 450006, China

More Information

Corresponding author: LIU Yan, lyan_d@mail.cgs.gov.cn

Received Date: 06 February 2023

Publish Date: 25 August 2023

Abstract

Abstract

Two kinds of bentonite with the ethylene blue adsorbed of 35.2 g/100 g and 23.6 g/100 g from Luoyang, Henan Province were Na−modified and mixed with synergists to develop civil engineering mud. The effects of sodium agent and synergists on the mud properties of bentonite were systematically studied. The results showed that the effect of Na−modification on the viscosity of high−grade bentonite with the ethylene blue adsorbed of 35.2 g/100 g was more significant, and the viscosity of high−grade bentonite was increased from 3 mPa·s to 34 mPa·s by 4% Na₂CO₃ semi−dry modification. The high−grade bentonite could reach the specification of high−viscosity bentonite after the Na−modification by addition of 0.75% Na−CMC. It was found that the combination of SPA and different synergists could effectively improve the viscosity and reduce the filtration loss and yield point/plastic viscosity ratio. The low−grade bentonite with the ethylene blue adsorbed of 23.6 g/100 g could reach the specification of medium−viscosity bentonite by addition of 0.2% SPA+1% PAC.
- bentonite /
- mud /
- Na−modification /
- synergist

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References

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