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Experimental on Unconfined Compressive Strength of Lignin Fiber-Cement Modified Soil
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Tao DAI1, 2, Xiao-yi JIANG2, Qing-rui LU1, 2, *, Shi-jun CHEN2
Science Technology and Engineering | 2025, 25(14) : 5999 - 6008
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Science Technology and Engineering | 2025, 25(14): 5999-6008
• Papers·Architectural Science •
Experimental on Unconfined Compressive Strength of Lignin Fiber-Cement Modified Soil
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Tao DAI1, 2, Xiao-yi JIANG2, Qing-rui LU1, 2, *, Shi-jun CHEN2
Affiliations
  • 1. State Key Laboratory of Nuclear Resources and Environment, East China University of Technology, Nanchang 330013, China
  • 2. East China University of Technology, Nanchang 330013, China
Published: 2025-05-18 doi: 10.12404/j.issn.1671-1815.2405160
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Due to the negative impact of abandoned powdered clay on land waste and pollution, it is beneficial to improve the powdered clay and use it for backfill in engineering construction.The effects of lignin fiber content and cement content on the unconfined compressive strength of silty clay excavated from a tunnel along the Yangtze River in Hangzhou,Zhejiang Province were studied. The formation mechanism of the compressive strength was analyzed. Finally,the pore microstructure of the sample was quantitatively analyzed by SEM experiment. The results show that the compressive strength reached the maximum value when the lignin fiber content is 4%,and the unconfined compressive strength was greater than that when the lignin fiber content is 2%, 6% and 8%. No matter how much lignin fiber content is,the unconfined compressive strength q'u increases gradually with the increase of cement content. With the addition of lignin fiber,the average diameter of pores gradually concentrated in the range of particle size less than 1 μm,and the proportion of pores 1~2 μm and 2~4 μm increased with the increase of cement content. With the increase of lignin fiber and cement content,pore abundance mainly concentrated in the range of 0.2~0.5.With the addition of lignin fiber,the particle abundance mainly concentrated in the range of 0.1~0.6,and the particle distribution showed a “mountain” pattern with the addition of cement.

lignin fiber  /  improved soil  /  microstructure  /  compressive strength
Tao DAI, Xiao-yi JIANG, Qing-rui LU, Shi-jun CHEN. Experimental on Unconfined Compressive Strength of Lignin Fiber-Cement Modified Soil[J]. Science Technology and Engineering, 2025 , 25 (14) : 5999 -6008 . DOI: 10.12404/j.issn.1671-1815.2405160
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Year 2025 volume 25 Issue 14
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Article Info
doi: 10.12404/j.issn.1671-1815.2405160
  • Receive Date：2024-07-10
  • Online Date：2025-07-09
  • Published：2025-05-18
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  • Received：2024-07-10
  • Revised：2025-02-27
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    1. State Key Laboratory of Nuclear Resources and Environment, East China University of Technology, Nanchang 330013, China
    2. East China University of Technology, Nanchang 330013, China
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表12种不同金属材料的力学参数
科
Family		 属数
Number of
genus		 种数
Number of
species		 占总种数比例
Percentage of
total species (%)		 属
Genus		 种数
Number of
species		 占总种数比例
Percentage of total
species (%)
鹅膏菌科Amanitaceae 2 11 5.26 鹅膏菌属 Amanita 10 4.78
小菇科 Mycenaceae 2 12 5.74 丝盖伞属 Inocybe 5 2.39
多孔菌科 Polyporaceae 8 14 6.70 蜡蘑属 Laccaria 5 2.39
红菇科 Russulaceae 3 23 11.00 小皮伞属 Marasmius 6 2.87
小菇属 Mycena 11 5.26
光柄菇属 Pluteus 5 2.39
红菇属 Russula 17 8.13
栓菌属 Trametes 5 2.39
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