Dynamic Properties of Soil Cements for Numerical Modelling of the Foundation's Basis Transformed under the Technology of Deep Soil Mixing: A Determination Method

Article Construction & Building Technology

Optimal water-cement ratio of cement-stabilized soil

Fangtong Wang et al.

Summary: A new method for selecting the water-cement ratio in deep soil mixing construction was investigated in this study. An empirical model was developed to estimate the optimal water-cement ratio for cement-stabilized soil with different cement contents. The model can ensure the fluidity of the soil and prevent bleeding. It can also predict the strength and stiffness of the soil with the optimal water-cement ratio.

CONSTRUCTION AND BUILDING MATERIALS (2022)

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Article Engineering, Geological

Correlating failure strength with wave velocities for cemented sands from the particle-level analysis

Xiao Wei et al.

Summary: Measurement of elastic wave velocities is useful for engineers to characterize and monitor the stiffness and strength development of cemented soils. This study derived an analytical correlation between elastic wave velocity (or small-strain stiffness) and unconfined compressive strength based on a simple cubic packing of coated equal-sized spheres. The derived correlation suggests a one-parameter power function with different power indices for wave velocity and stiffness.

SOIL DYNAMICS AND EARTHQUAKE ENGINEERING (2022)

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Review Engineering, Civil

Review on dynamic modulus of coarse-grained soil filling for high-speed railway subgrade

Yangsheng Ye et al.

Summary: This study analyzed the dynamic properties of coarse-grained soil filling in high-speed railway subgrade and proposed a method to determine the value of dynamic modulus, discussing the reasonable range of working dynamic modulus ratio. Based on measurements from several high-speed railway lines in China, the average working dynamic modulus of different materials in the subgrade were determined.

TRANSPORTATION GEOTECHNICS (2021)

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Article Materials Science, Multidisciplinary

Effects of plastic fines content on the engineering properties of cement-stabilized sands

Xiao Wei et al.

Summary: Cement-stabilization of soil is a common and useful method to increase the strength and stiffness of weak soils. This paper investigates the effects of fines content on the strength and wave velocities of cement-stabilized soil, showing that the strength and wave velocities first increase and then decrease as fines content increases from 0 to 15%.

GRANULAR MATTER (2021)

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Article Engineering, Geological

Dynamic behavior of cement-stabilized organic-matter-disseminated sand under cyclic triaxial condition

Juan Du et al.

Summary: This study investigated the dynamic characteristics of cement- and lime-stabilized OMDS samples through a series of unconsolidated undrained stress-controlled cyclic triaxial shear tests. The research found that cement content, curing time, and initial confining pressure have significant effects on the maximum elastic modulus, normalized elastic modulus, and maximum dynamic damping ratio of OMDS. Comparisons with uncemented OMDS revealed the effectiveness of cement stabilization on the dynamic behavior of OMDS.

SOIL DYNAMICS AND EARTHQUAKE ENGINEERING (2021)

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Article Engineering, Geological