Interpretation of pore pressure dissipation of CPTu in intermediate soil considering partial drainage effect

Zhang, Yan; Wang, Han; Liu, Tao; Liu, Huaiyu; Deng, Shenggui

doi:10.1016/j.oceaneng.2022.112956

Cited by 3 publications

(2 citation statements)

References 18 publications

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“…The particle size distribution of cement-based cementitious materials is closely related to their mechanical properties [12][13][14]. A Winner3003 dry laser particle size analyzer was used to analyze the particle size distribution of the test material, and partial particle size parameters of the cement-based early-strength anchor material used in this study were obtained, as shown in Table 2.…”

Section: The Cement-based Early-strength Anchor Materialsmentioning

confidence: 99%

Study on Anchoring Characteristics and Freeze–Thaw Degradation Law of the Cement-Based Early-Strength Anchor in Freeze–Thaw Regions

2023

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This article focuses on the effect of freeze–thaw cycling on a cement-based early-strength anchor material, the compressive strength of which at 24 h is 14 times that of ordinary cement, and the compressive strength at 7 h is twice that of ordinary cement. The setting time required to achieve the expected strength is 1/7 of that of ordinary cement. Through indoor freeze–thaw cycling tests, the appearance changes, quality loss, strength loss, and microstructure changes in the early-strength anchor after 0, 5, 15, 25, 50, 75, and 100 cycles were studied, revealing the evolution of the mechanical properties and micromechanisms of the cement-based early-strength anchor material under freeze–thaw cycling conditions. The sample freeze–thaw failure criteria were determined, evaluation indicators reflecting the degree of damage were defined, and their relationships with the number of freeze–thaw cycles were fitted to assess the durability of the cement-based early-strength anchor material under freeze–thaw environments. This provides a theoretical reference for further improvements in material properties and adaption to different environments.

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Section: The Cement-based Early-strength Anchor Materialsmentioning

confidence: 99%

Study on Anchoring Characteristics and Freeze–Thaw Degradation Law of the Cement-Based Early-Strength Anchor in Freeze–Thaw Regions

2023

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“…Establishing an inverse method for determining the mechanical parameters of silty clay based on in situ testing is of significant importance. In the research on inverse parameter determination through in situ testing of silty clay in the Yellow River Delta [4,5], there is currently a need for more studies on internal friction based on the CPTu method. The internal friction angle is primarily obtained through sampling tests [6][7][8].…”

Section: Introductionmentioning

confidence: 99%

Study on the Characteristics of Effective Internal Friction Angles of Silty Clay from the Yellow River Delta and the Inverse Method of CPTu Testing

Qi,

Wang,

Yan

et al. 2023

Applied Sciences

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This study focuses on the silty clay of the Yellow River Delta, conducting laboratory experiments to explore the strength characteristics of typical silty clay in the Yellow River Delta. The study utilizes CPTu calibration chamber tests to systematically reveal the features of cone tip resistance (qt), side friction resistance (fs), and pore water pressure (u2) of the silty clay. This research provides a theoretical basis for Delta investigation in the Yellow River region. The study compares the applicability of existing CPTu inversion methods and highlights the NTH method’s advantages in evaluating silty clay’s effective internal friction angle. Supported by indoor calibration chamber tests, the study confirms the reliability of the NTH method in estimating the effective internal friction angle under normally consolidated conditions while also identifying its limitations. These research findings offer data support for the in situ rapid and accurate estimation of design parameters, like the internal friction angle and undrained shear strength of the silty clay in the Yellow River Delta. Moreover, they provide insights for obtaining other crucial in situ data.

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Experimental Study on the Bonding Performance of HIRA-Type Material Anchor Solids Considering Time Variation

Wang

Meng

Zhang

et al. 2023

JMSE

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In order to reveal the evolution of bonding performance of HIRA (High Intensity and Rapid Agent) anchor solids with maintenance time, the evolution characteristics of bond strength and stress distribution at the interface between HIRA-based anchor solids and a geotechnical body under different maintenance times and the fine damage pattern of anchor solids were studied by an indoor pull-out test of anchor solids. The comparative analysis was performed with 42.5 grade ordinary Portland cement (hereinafter referred to as P.O 42.5). The results show that the early strength and rapid setting characteristics of HIRA type material are obvious, and the difference between its average peak bond strength and that of cement is 10.45 times. The shear stress distribution has obvious stress concentration characteristics, and the peak value will appear and shift with the increase in load, and the peak shift of the HIRA anchor solid occurs earlier than that of cement. Due to different stress levels, the damage of the HIRA anchor solid after being pulled out increases with the increase in maintenance time, while that of cement gradually becomes more severe. The overall damage of the HIRA material is generally lower than that of cement in the same period.

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Interpretation of pore pressure dissipation of CPTu in intermediate soil considering partial drainage effect

Cited by 3 publications

References 18 publications

Study on Anchoring Characteristics and Freeze–Thaw Degradation Law of the Cement-Based Early-Strength Anchor in Freeze–Thaw Regions

Study on Anchoring Characteristics and Freeze–Thaw Degradation Law of the Cement-Based Early-Strength Anchor in Freeze–Thaw Regions

Study on the Characteristics of Effective Internal Friction Angles of Silty Clay from the Yellow River Delta and the Inverse Method of CPTu Testing

Experimental Study on the Bonding Performance of HIRA-Type Material Anchor Solids Considering Time Variation

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