Research on sustainable development of fine-grained material cement slurry

Wu, Yue; Qiao, Wei-Guo; Liu, Huini; Li, Yan-zhi; Zhang, Shuai; Xi, Kai

doi:10.1016/j.conbuildmat.2021.124155

Cited by 20 publications

(9 citation statements)

References 30 publications

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“…At this time, ultrafine cement slurry is considered for grouting. Compared with traditional cement slurry, ultrafine cement slurry has the advantages of smaller particles, less sedimentation, a larger surface area, and a smaller particle size [24,25]. Nano-silica sol, created by uniformly dispersing nanoscale silica in water, undergoes gel formation upon mixing with cementitious materials [26].…”

Section: Inorganic Grouting Materialsmentioning

confidence: 99%

A State-of-the-Art Review on the Study of the Diffusion Mechanism of Fissure Grouting

Du,

Li,

Fang

et al. 2024

Applied Sciences

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China is renowned for its extensive underground engineering projects and the complex geological and hydrological conditions it faces. Grouting treatment technology is widely employed in deep-buried mines and tunnels, where grouting parameters such as materials, pressure, volume, and hole arrangement significantly impact the effectiveness of grouting. This review paper comprehensively examines current research on grouting materials, theories, experiments, and numerical simulations. It summarizes the various factors that must be considered during the grouting process of fissures and explores the diffusion mechanisms of grout under their influence. Furthermore, further research is needed on the mechanisms and treatment methods for poor grouting in rock masses, the distribution patterns of fissures, optimization methods for grouting parameters, and grout quality assessment techniques. Future research should focus on developing more efficient experimental methods with higher accuracy levels while advancing grouting technologies. Establishing comprehensive and accurate rock mass models along with improving monitoring capabilities are also crucial aspects to consider. Therefore, studying the diffusion mechanisms of grout in fissured rock masses is of significant importance for the practical operation of underground engineering projects.

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Section: Inorganic Grouting Materialsmentioning

confidence: 99%

A State-of-the-Art Review on the Study of the Diffusion Mechanism of Fissure Grouting

Du,

Li,

Fang

et al. 2024

Applied Sciences

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“…About 40% of the total electricity in the world is produced at coal-fired thermal power plants, of which in the USA, Germany and some other countries -about 70%. It is assumed that the growth in electricity production would occur due to the even more decisive development of coal energy in China, the United States and many other countries at least until 2030 [5][6][7] .…”

Section: Theoretical Overviewmentioning

confidence: 99%

Properties of Fine-Grained Concrete Using Ash of Kazakhstan

Zhakypova,

Uderbayev,

Saktaganova

et al. 2023

Evergreen

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The aim of the work is a study of the physical and mechanical properties of finegrained concrete using ash of Kazakhstan (namely: the influence of dispersion of hydro-removal ash and liquid glass additives on the properties of fine-grained concrete). This study aims to address the issue of improving the environmental impact, which ensures the quality of concrete by saving cement. It was established that ash in concrete contributed to the formation of a denser structure of the intergranular space of aggregates and a less defective contact zone of aggregates with cement stone. The analysis of the obtained results showed that ash-cement concretes hardened slowly under natural conditions. In the period of 7-14 days of hardening, as a rule, the strength of samples of fine-grained concrete with the addition of hydroremoval ash is lower than the strength of reference samples without ash. The increase in the strength of the samples in the period of 60 days was 6.6...7.0%, and in the period of 90 days -15.0...15.5% compared to the strength of 28 days. The experiments on ash absorption of CaO hydro removal from lime mortar were carried out. The degree of hydration in the ash-cement stone of the studied composition of the developed binder was determined. Research has shown that with a decrease in the concentration of calcium hydroxide in the liquid phase, the activity of the ash increases. This can be explained by the high content of the glass phase. The balance of hydrate neoplasms in the ash-cement binder was experimentally determined. The research results indicate the possibility of using ash in the production of crushed stone concrete as part of the following building materials: dense wall blocks, curbs, paving slabs, for pouring floors, for sound insulation, as a brick mortar.

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“…No single material can fully meet all the requirements of a grouting project. Therefore, based on the characteristics of the surrounding rocks, one or more suitable grouts should be selected for grouting the fractured rocks to meet the requirements of green and environmental mining and sustainability (Wu et al, 2021(Wu et al, , 2022a(Wu et al, , 2022b.…”

Section: Additivesmentioning

confidence: 99%

Grouting theories and technologies for the reinforcement of fractured rocks surrounding deep roadways

Kang

Wen-zhou

Gao

et al. 2022

Deep Underground Science and Engineering

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Grouting is an effective method to improve the integrity and stability of fractured rocks that surround deep roadways. After years of research and practice, various theories and a complete set of grouting technologies for deep roadways with fractured rocks have been developed and are widely applied in Chinese coal mining production. This paper systematically summarizes and analyzes the research results concerning the theory, design, materials, processes, and equipment for the grouting and reinforcement of fractured rocks surrounding deep roadways. Specifically, in terms of grouting methods, pregrouting, grouting‐while‐excavation, and postgrouting methods are explored; in terms of grouting theory, backfill grouting, compaction grouting, infiltration grouting, and fracture grouting theories are studied. In addition, this paper also studies grouting borehole arrangement, water‐cement ratio, grouting pressure, grouting volume, grout diffusion radius, and other grouting parameters and their determination methods. On this basis, this paper explores the physical and mechanical properties of organic and organic‐inorganic composite grouting materials, and assess grouting reinforcement quality testing methods and instruments. Taken as the field cases, the application of pregrouting in front of heading faces, grouting‐while‐excavation, and postgrouting in the Kouzidong coal mine are then introduced, and the effects of the grouting reinforcements are evaluated. This paper proposes a development direction for grouting technology based on problems existing in the grouting reinforcement of fractured rocks surrounding deep roadways.

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Research on sustainable development of fine-grained material cement slurry

Cited by 20 publications

References 30 publications

A State-of-the-Art Review on the Study of the Diffusion Mechanism of Fissure Grouting

A State-of-the-Art Review on the Study of the Diffusion Mechanism of Fissure Grouting

Properties of Fine-Grained Concrete Using Ash of Kazakhstan

Grouting theories and technologies for the reinforcement of fractured rocks surrounding deep roadways

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