Experimental Evaluation on Cyclic Shear Behavior of Geomembrane–Concrete Interfaces

Cen, Weijun; Wang, H.; Du, X. H.; Sun, Yang

doi:10.1520/jte20180251

Cited by 3 publications

(2 citation statements)

References 27 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…The results of direct shear tests at the sand-geosynthetic interface conducted by Punetha et al [ 12 ] revealed that the shearing mechanism includes interlocking and fiber stretching while sliding, indentation and plowing for sand-geomembrane interface. Cen et al [ 16 ] investigated the cyclic shear behavior of geomembrane-concrete interface and observed that the textured geomembrane-concrete interface presents higher cyclic friction angles. Anubhav and Basudhar [ 19 ] proposed a non-linear constitutive model for predicting the pre-peak and the post-peak mechanical behavior of the soil-geotextile interface, and the peak interface shear strength was found to be significantly higher for the coarse textured geotextile.…”

Section: Introductionmentioning

confidence: 99%

See 1 more Smart Citation

Interface shear behavior of a shaft lining concrete-high density polyethylene material under different pre-imposed normal stresses

Zhang

Zou

2022

PLoS ONE

View full text Add to dashboard Cite

As an important part of a double-layer shaft lining in China, a polyethylene sandwich can reduce or even eliminate the constraint effect on the inner shaft lining, which is confined by the outer shaft lining, thus improving the integrity of the inner shaft lining concrete. To reveal the interface shear mechanism of the concrete-high density polyethylene (HDPE) material, a series of 16 direct shear tests were performed under high normal loads (0.6~4 MPa) with four different surface morphologies. The experimental results showed that the interfaces exhibit a clear strain-softening property during shear, and the shear strength increases linearly with increasing normal stress. Three shearing mechanisms, plowing, localized plastic deformation, and dilatancy, were observed in these experiments. The research results are of great theoretical and practical value for understanding the shear mechanism and predicting the shear strength of a shaft lining concrete-HDPE interface under high normal stress.

show abstract

Section: Introductionmentioning

confidence: 99%

“…The shear strength mainly depends on the external load, joint roughness, shear rate, material property, and bonding state [ 11 – 16 , 19 – 22 ]. The surface morphology between HDPE and another material is an important factor in determining the integrality and service life of HDPE materials [ 23 ].…”

Section: Introductionmentioning

confidence: 99%

Interface shear behavior of a shaft lining concrete-high density polyethylene material under different pre-imposed normal stresses

Zhang

Zou

2022

PLoS ONE

View full text Add to dashboard Cite

show abstract

Laboratory evaluation of dynamic shear response of sand – geomembrane interface

Samanta

Bhowmik

Khanderi

2022

Geosynthetics International

View full text Add to dashboard Cite

The seismic stability of geosynthetic structures incorporating soil-geomembrane interfaces depends largely on their response to dynamic loads caused by earthquakes or traffic. The present study investigates the dynamic shearing response of sand-smooth geomembrane interface through fixed block-type shake table tests. The influence of dynamic loading parameters, like sliding velocity, loading frequency, normal stress, displacement amplitude and the number of cycles, and relative density of sand on the shearing behavior of the sand-geomembrane interface, are examined. Results show that the peak cyclic shear stress is significantly influenced by normal stress, shear displacement amplitude, loading cycles, and relative density of sand. The dynamic coefficient of friction of the sand-geomembrane interface displays an increasing trend with an increase in loading frequency, shear displacement amplitude, and relative density of sand but decreases for the rest of the considered parameters. The shape of the hysteresis loops is dependent on the normal stress and displacement amplitude. The dynamic coefficients of friction are also compared with the corresponding values under static conditions. The results from the present study emphasize the importance of considering the design basis value of the dynamic coefficient of friction for each parameter during the design stage of geosynthetic structures involving sand and geomembrane.

show abstract

Shear Characteristics of Soil—Concrete Structure Interaction Interfaces

Chong

Ruan

et al. 2022

Applied Sciences

View full text Add to dashboard Cite

The shear characteristics of the interfaces between soil and concrete structures are essential for the safety of the structures. In this study, a large-scale direct shear test apparatus was developed to measure the mechanical parameters of soil–concrete interfaces under conditions with different soil types, soil moisture contents, and interfacial filling materials. The results showed that the shear stress of the soil–concrete interface increased initially and then became stable with the increase in the shear displacement. The shear displacement of the sandy soil when the shear stress became stable was smaller than that of the clayey soil. The silty sand–concrete interface had a smaller friction angle than the interface with the medium-coarse sand. Moreover, with the increase in the soil moisture content, the friction angle of the clayey soil–concrete interface decreased rapidly, whereas the cohesion first increased and then decreased, and the peak cohesion was near the plastic limit of the soil. Under the same moisture content, the friction angle and cohesion of the clay–concrete interface was reduced by filling the interface with a thin layer of sandy soil, while filling the silty sand–concrete interface with a thin layer of silt reduced the friction angle and increased the interfacial cohesion. Nonetheless, the filling had little impact on the overall shear strength of the interface.

show abstract

Experimental Evaluation on Cyclic Shear Behavior of Geomembrane–Concrete Interfaces

Cited by 3 publications

References 27 publications

Interface shear behavior of a shaft lining concrete-high density polyethylene material under different pre-imposed normal stresses

Interface shear behavior of a shaft lining concrete-high density polyethylene material under different pre-imposed normal stresses

Laboratory evaluation of dynamic shear response of sand – geomembrane interface

Shear Characteristics of Soil—Concrete Structure Interaction Interfaces

Contact Info

Product

Resources

About