Development of the nano-composite cement: Application in regulating grouting in complex ground conditions

Wang, Sheng; Wang, Jingfei; Yuan, Chaopeng; Chen, Liyi; Xu, Shi-Tong; Guo, Kai-bin

doi:10.1007/s11629-017-4729-9

Cited by 14 publications

(3 citation statements)

References 17 publications

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“…In different engineering contexts, the requirements for the physical properties and mechanical properties of the grouting fluid vary greatly [42][43][44]. Therefore, the grouting solution should be designed with modified materials according to the project needs, and if possible, intelligent machine technology should be combined with grouting technology to improve the grouting effect.…”

Section: Discussionmentioning

confidence: 99%

Experimental Study on Performance of Modified Cement-Based Building Materials under High-Water-Pressure Surrounding Rock Environment

et al. 2023

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Traditional cement-based grouting materials have good reinforcement and anti-seepage effects on the surrounding rock under normal conditions, but the grouting effect is not ideal due to problems such as a long setting time, a low stone ratio, and poor crack resistance under high water pressure and in a dynamic water environment. In this study, we aimed to improve the physical properties, chemical properties, and microstructure of a cement-based slurry by forming a hydrogel through its chemical crosslinking with polyvinyl alcohol and boric acid as modifiers for the purpose of improving the permeability resistance of the surrounding rock grouting under high-water-pressure conditions, which can expand the function of traditional building materials. The grouting effect of the modified cementitious material on the surrounding rock was analyzed through indoor tests, the SEM testing of the performance of the modified slurry, the numerical calculation of the seepage field, and the application of the modified slurry in combination with the actual project to verify the water-plugging effect. The research findings demonstrate that (1) the additives boric acid and PVA can significantly speed up the slurry gel time, and the gel time can be controlled within 2–20 min to meet the specification requirements. (2) At a velocity of moving water > 1 m/s, the retention of the solidified modified slurry stone body reaches more than 80%. According to the SEM analysis, the structure of the solidified modified slurry stone body is dense and has good impermeability. (3) According to the numerical calculation analysis, the modified slurry can effectively change the seepage field of the surrounding rock and improve its seepage resistance. The water pressure outside the lining is reduced by 47%, 31%, and 22%, respectively, compared with no slurry, the pure cement slurry, and cement–water-glass grouting, and the indoor test and numerical simulation conclusions are consistent.

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Section: Discussionmentioning

confidence: 99%

Experimental Study on Performance of Modified Cement-Based Building Materials under High-Water-Pressure Surrounding Rock Environment

et al. 2023

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“…High-pressure, water-rich strata OPC, sand, fly ash, silica fume, steel slag, sodium bentonite Better stability [34] Wuhan, Hubei Province, China Under river OPC, steel slag, fly ash, slag, metakaolin, sodium silicate, Better corrosion resistance [35] Nanjing, Jiangsu Province, China Soft soil strata OPC, fly ash, hydrated lime, sand, clay, sodium bentonite, Good workability and corrosion resistance [36] Wuhan, Hubei Province, China Water-rich strata OPC, sand, fly ash, silica fume, SPs, HEC Good flow and strength properties [37] Xi'an, Shaanxi Province, China Loess ground OPC, sand, fly ash, sodium bentonite, micro-expansive agents Higher strength and good workability [38] Beijing, China Water-rich strata OPC, fly ash, slag, sodium silicate, sodium bentonite, retarder agents Better liquidity performance [39] Beijing, China Sulfate-rich environment Cement, fly ash, slag, sodium silicate, sodium bentonite Good flow and strength properties [40] Chengdu, Sichuan Province, China Complex ground OPC, CSA, silica fume, early strength agent High early strength and better durability [41] The potential and suitability of different ISW types in the production of grouting materials were explored by investigating their physical, chemical, and mechanical properties. For instance, waste slag, fly ash, and steel slag have been extensively studied and applied in grouting material preparation; the details are shown in Figure 4 [42][43][44][45][46][47].…”

Section: Introductionmentioning

confidence: 99%

A Review on Development of Industrial Solid Waste in Tunnel Grouting Materials: Feasibility, Performance, and Prospects

Jiang,

Wu,

et al. 2023

Materials

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With rapid infrastructure development worldwide, the generation of industrial solid waste (ISW) has substantially increased, causing resource wastage and environmental pollution. Meanwhile, tunnel engineering requires large quantities of grouting material for ground treatment and consolidation. Using ISW as a component in tunnel grouts provides a sustainable solution to both issues. This paper presented a comprehensive review of the recent advancements in tunnel grouting materials using ISW, focusing on their feasibility, mechanical characteristics, and future development directions. Initially, the concept and classification of ISW were introduced, examining its feasibility and advantages as grouting materials in tunnels. Subsequently, various performances of ISW in tunnel grouting materials were summarized to explore the factors influencing mechanical strength, fluidity, durability, and microstructure characteristics. Simultaneously, this review analyzed current research trends and outlines future development directions. Major challenges, including quality assurance, environmental risks, and lack of standardized specifications, are discussed. Future research directions, including multifunctional grouts, integrated waste utilization, and advanced characterization techniques, are suggested to further advance this field. These findings provided useful insights for the continued development of high-performance and environmentally friendly ISW-based grouting materials.

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“…Wang et al [14] have studied the fluidity of glass fiber cement paste and found that mixing glass fiber with pure cement paste would reduce the fluidity of pure cement paste, and the higher the glass fiber content, the more obvious the effect. Wang et al [15] have developed nanoscale cement materials with delayed setting time and improved fluidity. Kamalakannan et al [16] have studied the density, setting time, mechanical strength, and other parameters of several common cement grout.…”

Section: Introductionmentioning

confidence: 99%

Experimental Research on Performance of New Gas Drainage Borehole Sealing Material with High Fluidity

Guo

Xue

Zheng

et al. 2021

Advances in Materials Science and Engineering

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To ensure the sealing effect of gas extraction borehole in underground coal mine and improve the concentration of gas extraction, a kind of high-flow sealing material which can be injected into the microcracks around borehole was developed. The ultrafine cement as the base material, with water-reducing agent, expansion agent, retarder, the material, and water combined stir, will form a kind of colloid with high fluidity and slightly expansibility. This paper analyzes the differences between the new high-fluidity sealing material and ordinary cement materials in expansion performance, compressive strength, and sealing performance. Scanning electron microscope and mercury intrusion method were used to analyze the differences in microscopic morphology and pore structure of these two materials. The experimental results show that the new high-fluidity sealing material has an excellent fluidity of 295.5 mm with an expansion rate of 60 d being 1.562%. The new high-fluidity sealing material is convenient for grouting with strong material permeability and superior sealing performance. Field test results show that the effect of the new high-fluidity sealing material is better than the ordinary cement materials. The average drainage concentration and flux during the drainage period were 59.07% and 0.243 m3/min, respectively, which showed that the drainage efficiency was significantly improved. This novel sealing material is of great significance for improving the efficiency of drilling and drainage.

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Development of the nano-composite cement: Application in regulating grouting in complex ground conditions

Cited by 14 publications

References 17 publications

Experimental Study on Performance of Modified Cement-Based Building Materials under High-Water-Pressure Surrounding Rock Environment

Experimental Study on Performance of Modified Cement-Based Building Materials under High-Water-Pressure Surrounding Rock Environment

A Review on Development of Industrial Solid Waste in Tunnel Grouting Materials: Feasibility, Performance, and Prospects

Experimental Research on Performance of New Gas Drainage Borehole Sealing Material with High Fluidity

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