Study on the Determination of Residual Shear Strength for Expansive Soil

Yang, Heping; Xiao, Jie; Wang, Shu; Zuo, Weiran

doi:10.1061/41044(351)8

Cited by 4 publications

(2 citation statements)

References 7 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…Zhu et al [38] also engaged in triaxial consolidation drained shear tests on rockfill samples of varying diameters, aiming to understand the sample size's effect on the stress-strain and strength properties of coarsegrained soil. In another study, Yang et al [39] contrasted the shear strengths of expansive soil obtained from both indoor and field shear tests, identifying significant disparities attributed to the size effect. They further evaluated the origins of the size effect and proposed a reduction coefficient for shear strength in indoor tests.…”

Section: Introductionmentioning

confidence: 99%

An Investigation into the Influence of Sample Height on the Consolidation Behaviour of Dredged Silt

Hu,

Zhang,

Wang

2023

Applied Sciences

View full text Add to dashboard Cite

This study delves into the effects of sample height on consolidation behaviour, utilising the automatic air pressure consolidometer. Extensive tests were conducted on three varieties of dredged silt samples of varying heights from Qianwan, Shenzhen, China. The salient findings can be summarised as follows: (1) Compression curves for samples of different dimensions transitioned through three distinct phases: minimal load disturbance, elastic deformation, and plastic deformation. Notably, the void ratio during the latter two phases diminished as sample height increased. (2) A rising sample height corresponded to a reduced stable strain and compression index. Furthermore, the consolidation coefficient notably diminished with an escalation in the sample height, whereas the structural yield stress remained largely unaffected. (3) Given the disparate formation processes, stress histories, and material compositions between dredged and marine silts, the permeability coefficient of dredged silt was found to be superior to that of marine silt. Within the typical preloading pressure scope (50~300 kPa), the consolidation coefficient of dredged silt was lower compared to marine silt. However, as the consolidation pressure significantly surpassed this threshold, the coefficient disparity between the two silts narrowed.

show abstract

Section: Introductionmentioning

confidence: 99%

An Investigation into the Influence of Sample Height on the Consolidation Behaviour of Dredged Silt

Hu,

Zhang,

Wang

2023

Applied Sciences

View full text Add to dashboard Cite

show abstract

“…is stress is significantly lower than the actual range of stresses at which specimens are usually tested for investigating the slope stability of expansive soils. erefore, the results of slope stability by applying the shear strength parameters obtained by universal tests could not be explained nationally since the saturated peak drained shear strength parameters of the expansive soil under wet-dry cycles, or as the residual drained shear strength parameters [16,17] were often not low. For example, a Nanyang expansive soil cutting slope had an average slope ratio of 1 : 2 (V : H), and the calculated factor of safety was 2.7 using the universal shear strength parameters; however, the surficial failure of the slope occurred, and even though the slope was flattened to 1 : 4, a sliding failure still happened [1].…”

Section: Introductionmentioning

confidence: 99%

Surficial Failure of Expansive Soil Cutting Slope and Its Flexible Support Treatment Technology

Xiao

Yang

Zhang

et al. 2018

Advances in Civil Engineering

Self Cite

View full text Add to dashboard Cite

e surficial failure of most expansive soil cutting slopes, subjected to the repeated wet-dry cycles, often occurs during or after rainfall following a long drought. e reason for this, however, is still unclear. erefore, the laboratory tests were conducted to gain the saturated drained shear strength of the natural Nanning expansive soil considering the combined effects of swelling with loading and wet-dry cycles. e findings indicate that the envelope of shear strength, which significantly drops close or equal to zero, can be well fitted by the generalized power function. At the same time, the effect of shear strength parameters on the stability of the expansive soil cutting slope was investigated. e reasons for the shear strength attenuation of the natural expansive soil and the surficial failure of the expansive soil cutting slopes were analyzed. It is evident that the effective cohesion being small is a vital factor influencing the occurrence of surficial failure of an expansion soil slope. Moreover, an effective flexible support treatment measure was provided.

show abstract

Effect of Mineralogical Properties of Expansive Soil on Its Mechanical Behavior

Mehta

Sachan

2017

Geotech Geol Eng

View full text Add to dashboard Cite

Study on the Determination of Residual Shear Strength for Expansive Soil

Cited by 4 publications

References 7 publications

An Investigation into the Influence of Sample Height on the Consolidation Behaviour of Dredged Silt

An Investigation into the Influence of Sample Height on the Consolidation Behaviour of Dredged Silt

Surficial Failure of Expansive Soil Cutting Slope and Its Flexible Support Treatment Technology

Effect of Mineralogical Properties of Expansive Soil on Its Mechanical Behavior

Contact Info

Product

Resources

About