Nuclear magnetic resonance analysis of the failure and damage model of rock masses during freeze‒thaw cycles

Liu, Taoying; Cui, Mengyuan; Zhang, Chaoyang; Zhou, Keping; Shi, Wenchao; Cao, Ping

doi:10.1007/s10064-022-02944-0

Cited by 14 publications

(3 citation statements)

References 43 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…However, with the increase of age, the hydration products in the stabilized soil increase, which reduces the trend of pore increase, and the performance is more superior. According to the relevant literature, the rock freeze-thaw deterioration model was improved [3,33,34]. Based on the porosity variation of the CS-CG stabilized soil, a freezethaw cycle deterioration model of CS-CG stabilized soil was proposed, and the hypothesis derivation and verification of the model were carried out.…”

Section: Sem Test Results and Analysis Of The Cs-cg Stabilized Soil U...mentioning

confidence: 99%

Frost Resistance and Shrinkage Characteristics of Soil Stabilized by Carbide Slag and Coal Gangue Powder

Zhao

Liu

et al. 2023

Sustainability

View full text Add to dashboard Cite

show abstract

Section: Sem Test Results and Analysis Of The Cs-cg Stabilized Soil U...mentioning

confidence: 99%

Frost Resistance and Shrinkage Characteristics of Soil Stabilized by Carbide Slag and Coal Gangue Powder

Zhao

Liu

et al. 2023

Sustainability

View full text Add to dashboard Cite

show abstract

“…The Nuclear Magnetic Resonance (NMR) of the core samples was employed to study pore size, fluid distribution and fracture direction [19,20]. The MesoMR23 NMR instrument (Shanghai Eletronic Technology CO., Ltd. Shanghai, China), operating at a frequency of 23 MHz and a field strength of 0.5 T, was utilized to measure pore information.…”

Section: Methodsmentioning

confidence: 99%

The Classification and Evaluation of an Interlayer Shale Oil Reservoir Based on the Fractal Characteristics of Pore Systems: A Case Study in the HSN Area, China

Lu,

Wang,

et al. 2024

Fractal Fract

View full text Add to dashboard Cite

The evaluation of shale reservoir quality is of great significance for the exploration and development of shale oil. To more effectively study the distribution characteristics of shale reservoir quality, thin-section observation, scanning electron microscopy and pressure-controlled porosimetry were used to obtain the pore structure characteristics of shale in Chang 7, including pore types, pore size distribution, etc. In addition, the fractal dimensions of the shale samples were calculated based on pressure-controlled porosimetry data. The results show that residual interparticle pores, dissolution pores and clay-dominated pores were the main pore types. The overall pore size was mainly distributed between 3 nm and 50 μm. The pore system was divided into four types using fractal features, and the shale reservoir was divided into four types based on the proportion of different types of pore system. In different types of reservoirs, the production capacity of exploration wells varies significantly, as does the production capacity of horizontal wells. The classification of shale reservoirs using mercury intrusion fractal analysis proved to be suited for the efficient development of Chang 7 shale oil reservoirs.

show abstract

“…In terms of freeze–thaw microstructure, Xue et al 20 investigated the influence of service load and dry and wet freeze–thaw environment on the initial damage of concrete, and found that with the increase of dry and wet freeze–thaw cycles, micro and small holes in concrete evolved into medium and large holes. Liu et al 21 conducted several freeze–thaw cycle tests on sandstone samples and revealed the evolution law of microscopic damage during the freeze–thaw cycle using NMR .…”

Section: Introductionmentioning

confidence: 99%

Study on pore structure and the mechanical properties of sandstone-concrete binary under freeze–thaw environment

Hu,

Xue,

Shang

et al. 2023

Sci Rep

View full text Add to dashboard Cite

In China's cold region water conservancy and hydropower projects, the contact interface between the dam and the reservoir bank rock is prone to cracking under external loading and freeze–thaw action, which may lead to dam-bank failure and damage and cause engineering disasters. The NMR (Nuclear Magnetic Resonance) tests and uniaxial compression tests of concrete, sandstone, and sandstone-concrete composite after different numbers of freeze–thaw cycles were carried out to analyze the pore structure development and uniaxial compression mechanical properties of the three types of specimens under different numbers of freeze–thaw cycles. The results show that freeze–thaw cycling promotes the development of pores in sandstone and concrete, and sandstone is more sensitive to low-temperature freeze–thaw than concrete. The UCS (uniaxial compressive strength) of the sandstone-concrete binary changed in a V-shaped with the increase of the dip angle of the cemented interface, and the angle had no obvious effect on the microscopic pores. The freeze–thaw effect on the deterioration of the microscopic pore structure and mechanical properties of the sandstone-concrete binary has a similar effect pattern, in which the deterioration rate of porosity and compressive strength is faster in the early freeze–thaw period, slower in the middle period, and increases in the later period compared with the middle period, but the increase is smaller than that in the early period of freeze–thaw. In addition, the relationship between the porosity and UCS of the sandstone-concrete binary under the freeze–thaw cycle environment is a quadratic parabola.

show abstract

Nuclear magnetic resonance analysis of the failure and damage model of rock masses during freeze‒thaw cycles

Cited by 14 publications

References 43 publications

Frost Resistance and Shrinkage Characteristics of Soil Stabilized by Carbide Slag and Coal Gangue Powder

Frost Resistance and Shrinkage Characteristics of Soil Stabilized by Carbide Slag and Coal Gangue Powder

The Classification and Evaluation of an Interlayer Shale Oil Reservoir Based on the Fractal Characteristics of Pore Systems: A Case Study in the HSN Area, China

Study on pore structure and the mechanical properties of sandstone-concrete binary under freeze–thaw environment

Contact Info

Product

Resources

About