Enzyme-induced carbonate precipitation (EICP) combined with lignin to solidify silt in the Yellow River flood area

Zhang, Jianwei; Wang, Xiaoju; Shi, Lei; Yin, Yue

doi:10.1016/j.conbuildmat.2022.127792

Cited by 17 publications

(2 citation statements)

References 38 publications

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“…Consequently, researchers have attempted various combinations of materials with traditional EICP to enhance the curing effect. Zhang et al [11] found that adding lignin in EICP technology effectively enhances the cohesion and internal friction angle of the soil mass. Almajed et al [12] attempted to improve the compressive strength of sand samples treated with EICP technology by adding an appropriate amount of skim milk powder.…”

Section: Introductionmentioning

confidence: 99%

Enzyme-induced Carbonate Precipitation (EICP) Combined with Lignin to Improve the Unconfined Compression Strength (USC) of Shanghai Clay

2024

SJT

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In order to improve the mechanical properties of high moisture content and low strength of clay particles in Shanghai, the effects of different lignin content on the unconfined compressive strength of EICP-lignin-cured clay were studied by using the method of lignin combined with EICP technology to strengthen the clay by lignin combined with EICP technology. The experimental results showed that EICP-lignin could enhance the unconfined compressive strength of Shanghai clay. With the increase of lignin content, the unconfined compressive strength of clay first increased and then decreased, and there was an optimal content value. The optimal lignin content is 8%.

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Section: Introductionmentioning

confidence: 99%

Enzyme-induced Carbonate Precipitation (EICP) Combined with Lignin to Improve the Unconfined Compression Strength (USC) of Shanghai Clay

2024

SJT

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“…On the one hand, there are many modification methods to improve the long-term durability of sisal fiber (Kiran and Ramakrishna, 2019). On the other hand, sisal fiber in soil can achieve pollution-free degradation (Zhang J. et al, 2022;Mert Tezer and Başaran Bundur, 2022). Correspondingly, synthetic fibers are accompanied by the generation of pollutants in both the production and elimination process (Morán et al, 2008;Frazão et al, 2018;De Castro et al, 2021).…”

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confidence: 99%

Experimental investigation on mechanical behavior of sands treated by enzyme-induced calcium carbonate precipitation with assistance of sisal-fiber nucleation

et al. 2022

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Sisal fibers had obvious advantages of mechanical strength on reinforced enzyme-induced calcium carbonate precipitation (EICP)-cemented loose sands. However, there are few related researches, whose research on strength and toughness is not sufficient, and the analysis on mechanism is lacking. In this article, sisal fiber was used to strengthen EICP-treated sand, and the mechanical properties and underlying mechanism were experimentally explored. The results show that the strength and toughness of EICP-treated sand can be effectively improved by sisal fibers. The optimal sisal fiber length is 10 mm and the optimal fiber content is 0.2%. The wet-dry cycle resistance of the samples is improved simultaneously. Microscopic study showed that the rough surface of sisal fiber provided a large number of nucleation sites for calcium carbonate precipitation and formed an effective “bridge network.” This study reports the potential and the underlying mechanism of sisal fiber on improvement of EICP performance by new test methods and provides new insight into enhancing mechanical behavior of EICP-cemented loose sands with natural fiber.

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Experimental study on the mechanical properties of desert sand improved by the combination of additives and bio-cement

Ye,

Fu,

et al. 2024

Bioprocess Biosyst Eng

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Enzyme-induced carbonate precipitation (EICP) combined with lignin to solidify silt in the Yellow River flood area

Cited by 17 publications

References 38 publications

Enzyme-induced Carbonate Precipitation (EICP) Combined with Lignin to Improve the Unconfined Compression Strength (USC) of Shanghai Clay

Enzyme-induced Carbonate Precipitation (EICP) Combined with Lignin to Improve the Unconfined Compression Strength (USC) of Shanghai Clay

Experimental investigation on mechanical behavior of sands treated by enzyme-induced calcium carbonate precipitation with assistance of sisal-fiber nucleation

Experimental study on the mechanical properties of desert sand improved by the combination of additives and bio-cement

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