Mechanical characteristics of soil-rock mixtures containing macropore structure based on 3D modeling technology

Liu, Yong; Sun, Shanzhong; Wei, Jihong; Song, Jian Li; Yu, Yongxiang; He, Wei; Zhang, Jixing

doi:10.1007/s11629-020-5937-2

Cited by 10 publications

(2 citation statements)

References 25 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…American Society for Testing and Materials (ASTM) adopts 4.75 mm as the boundary particle size of coarse and fine particles [30], however, 5 mm is used as the threshold of soil and rock in many classical literatures [2,5,25]. To align with classical literature and taking into account the experimental scale and recommendations from numerous scholars [31][32][33], a threshold of 5 mm was chosen for differentiating between soil and rock in following works.…”

Section: Experimental Schemementioning

confidence: 99%

Fractal Analysis on the Crushing Characteristics of Soil-Soft Rock Mixtures under Compaction

Hu,

Zhang,

Zhu

et al. 2024

Fractal Fract

View full text Add to dashboard Cite

Soil-rock mixtures (SRM) are extensively utilized as filling materials in engineering slopes and roadbeds. A comprehensive understanding of the crushing characteristics of SRM during compaction is essential for precisely controlling its mechanical properties, particularly when dealing with SRM comprising soft rock blocks. This study conducted heavy compaction and screening tests to investigate the crushing and compaction behaviors of soil-soft rock mixture (SSRM) with varying coarse particle content (P5 content), the primary focus was primarily on analyzing the double fractal characteristics of coarse and fine particles. The research findings are as follows: with the increase of P5 content, the maximum dry density of SSRM initially rises and then declines, reaching its peak when P5 content is 70%. Soft rock blocks in SSRM exhibit extreme fragility during compaction, the crushing index of coarse particles exhibits a linear increase with the rise in P5 content, whereas the crushing index of fine particles displays a “double peak” characteristic. After compaction, a linear positive correlation is observed between the fractal dimension and the crushing index of coarse and fine particles. With the increase in P5 content, the slope of the relationship curve between the fractal dimension and the crushing index of coarse particles remains relatively constant, while the intercept gradually decreases. Moreover, the fractal dimension of fine particles effectively reflects the compaction characteristics of SSRM, and the relationship between the fractal dimension of fine particles and dry density aligns with the compaction curve of SSRM.

show abstract

Section: Experimental Schemementioning

confidence: 99%

Fractal Analysis on the Crushing Characteristics of Soil-Soft Rock Mixtures under Compaction

Hu,

Zhang,

Zhu

et al. 2024

Fractal Fract

View full text Add to dashboard Cite

show abstract

“…It is found that the dry density of the experimental sand affects the internal friction angle and the particle crushing value, and the growth trend of the crushing value shows a power function increase. [15,16] and rock mechanics [17][18][19][20]. According to the soil engineering classification specified in the standard for "Geotechnical Test Methods" [21] GB/T50123-2019 issued by the Ministry of Water Resources of the People's Republic of China, coarse sand is used as the research object in this test.…”

Section: Introductionmentioning

confidence: 99%

Experimental and Numerical Simulation Study on Shear Strength and Secondary Particle Breakage of Coarse Sand with Different Dry Densities

et al. 2022

View full text Add to dashboard Cite

In order to guarantee perpendicularity of rotary cast-in-place pile in Karst areas, filling, like sand, etc., is commonly used between the inner steel casing and the outer steel sleeve; while the outer steel sleeve is pulled out or a vertical load is applied on the top of the pile, the sand will move, contact, and push against each other, which leads to recrushing; therefore, shear characteristics and secondary breakage are a meaningful problem to study with regard to the influence of different sand densities. Through experimental direct shear tests, with different dry densities, shear stress versus shear displacement curves are obtained and internal friction angles are analyzed. The results show that internal friction angles increase along with increment of dry densities; more interesting is that the secondary breakage ratio also increases. A comparative numerical 2D model is set up using PFC2D, with lower porosity used to simulate a large dry density, and similar results are obtained, that is to say, with increase of dry densities, internal friction angles also increase.

show abstract

Mechanical characteristics study of bimrocks with different cementation types from a microstructural perspective

Hu,

Sun,

Sun

et al. 2024

Bull Eng Geol Environ

View full text Add to dashboard Cite

Mechanical characteristics of soil-rock mixtures containing macropore structure based on 3D modeling technology

Cited by 10 publications

References 25 publications

Fractal Analysis on the Crushing Characteristics of Soil-Soft Rock Mixtures under Compaction

Fractal Analysis on the Crushing Characteristics of Soil-Soft Rock Mixtures under Compaction

Experimental and Numerical Simulation Study on Shear Strength and Secondary Particle Breakage of Coarse Sand with Different Dry Densities

Mechanical characteristics study of bimrocks with different cementation types from a microstructural perspective

Contact Info

Product

Resources

About