Experimental study on the strength, collapsibility, and microstructure of cement and micro-silica-stabilized saline soil under freeze-thaw cycles

Li, Shengang; Zhang, Chaozhe; Zhang, Tianbiao; Li, Wentao; Jia, Pengjiao

doi:10.1016/j.cscm.2023.e02518

Cited by 5 publications

(2 citation statements)

References 44 publications

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“…Li et al showed that both cement and micro-silica can improve the strength and durability of saline soil. Micro-silica, in particular, provides better freeze–thaw cycle durability [ 15 ]. Mixtures of cement and micro-silica achieve superior performance compared to cement or micro-silica alone.…”

Section: Introductionmentioning

confidence: 99%

Freeze–Thaw Damage Characterization of Cement-Stabilized Crushed Stone Base with Skeleton Dense Gradation

Xiao,

An,

et al. 2024

Materials

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The skeleton dense graded cement-stabilized crushed stone base is a widely used material for road construction. However, this material is susceptible to freeze–thaw damage, which can lead to degradation and failure, for which there is still a lack of an in-depth understanding of the freeze–thaw damage characteristics. This study aims to assess the mechanical performance and the freeze–thaw damage characteristics of the cement-stabilized crushed stone base with skeleton dense gradation based on a mechanical test and acoustic technology in a laboratory. There is a gradually increasing trend in the mass loss rate of the base material with an increase in freeze–thaw cycles. The curve steepens significantly after 15 cycles, following a parabola-fitting pattern relationship. The compressive strength of the cement-stabilized crushed stone base also decreased with a parabola-fitting pattern, and the decrease rate may accelerate as the freeze–thaw cycles increase. The resilience modulus of the base material decreased with increasing freeze–thaw cycles, following a parabolic trend. This suggests that the material’s resistance to freeze–thaw damage decreases with increasing cycles. The ultrasonic wave velocity decreased with increasing freeze–thaw cycles, exhibiting a parabolic trend. This decline can be attributed to microcracks and defects developing within the material, offering insights for monitoring and predicting its service life. The damage progression of the cement-stabilized crushed stone base was found to occur in three stages: initial, stationary, and failure. The duration of stage I increased with freeze–thaw cycles, while the duration of stage III decreased. The findings provide valuable insights into the mechanisms and processes of freeze–thaw damage in a cement-stabilized crushed stone base with skeleton dense gradation.

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Section: Introductionmentioning

confidence: 99%

Freeze–Thaw Damage Characterization of Cement-Stabilized Crushed Stone Base with Skeleton Dense Gradation

Xiao,

An,

et al. 2024

Materials

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“…Notably, micro-silica exhibits superior resilience to freeze-thaw cycles. [15]. In comparison to the use of cement or micro-silica solely, blends incorporating both cement and micro-silica exhibit superior operation.…”

Section: Introductionmentioning

confidence: 99%

Performance Evaluation and Degradation Analysis of Suspended Dense Broken Stone Road Foundation Stabilized by Cement under Conditions of Freezing and Thawing

Deng,

Huang,

et al. 2024

Buildings

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A suspended dense graded broken stone road foundation stabilized by cement is a commonly employed material in roadworks, which is vulnerable to harm caused by freezing and thawing processes. This investigation intends to evaluate the laboratory behavior and the characteristics of freezing and thawing process-induced deterioration in a broken stone road foundation stabilized by cement with suspended dense grading, employing mechanical examinations and acoustical methods. The rate of mass loss in the broken stone road foundation stabilized by cement progressively rises, and the rate of decline in the compressive strength could potentially intensify as freezing and thawing processes augment. The modulus of resilience diminishes as freezing and thawing processes progress, and ultrasonic wave velocity also decreases. The patterns of mass loss, compressive strength decline, resilience modulus reduction, and ultrasonic wave velocity alteration adhere to a parabolic fitting relationship with freeze–thaw cycles, with an R2 above 0.95. The curves depicting the relationship of mass, compressive strength, resilience modulus, and ultrasonic wave velocity exhibit a steeper trend significantly after 10–15 cycles, which can be ascribed to the emergence of microcracks and the progression of flaws within the material. The evolution of damage in the broken stone road foundation stabilized by cement is monitored to progress through three distinct stages based on acoustic emission: initial, stationary, and failure. As freezing and thawing processes accumulate to 20 cycles, the length of initial phase correspondingly rises to three times, the length of failure stage diminishes to about one fifth.

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Effect of Density and Surcharge Pressure on Collapse Potential of Loess Soil Treated with Bagasse Ash

Safdar,

Farooq,

Mujtaba

et al. 2024

Arab J Sci Eng

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Experimental study on the strength, collapsibility, and microstructure of cement and micro-silica-stabilized saline soil under freeze-thaw cycles

Cited by 5 publications

References 44 publications

Freeze–Thaw Damage Characterization of Cement-Stabilized Crushed Stone Base with Skeleton Dense Gradation

Freeze–Thaw Damage Characterization of Cement-Stabilized Crushed Stone Base with Skeleton Dense Gradation

Performance Evaluation and Degradation Analysis of Suspended Dense Broken Stone Road Foundation Stabilized by Cement under Conditions of Freezing and Thawing

Effect of Density and Surcharge Pressure on Collapse Potential of Loess Soil Treated with Bagasse Ash

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