Concrete-to-concrete interface shear strength prediction based on explainable extreme gradient boosting approach

A laboratory investigation into crude oil contaminated sand-concrete interface behavior is performed. The interface tests were carried out through a direct shear apparatus. Pure sand and sand-bentonite mixture with different crude oil contents and three concrete surfaces of different textures (smooth, semi-rough, and rough) were examined. The experimental results showed that the concrete surface texture is an effective factor in soil-concrete interface shear strength. The interface shear strength of the rough concrete surface was found higher than smooth and semi-rough concrete surfaces. In addition to the texture, the normal stress and the crude oil content also play important roles in interface shear strength. Moreover, the friction angle decreases with increasing crude oil content due to increase of oil concentration in soil and it increases with increasing interface roughness.

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Metaheuristic model for the interface shear strength between granular soil and structure considering surface morphology

Computers and Geotechnics ◽

10.1016/j.compgeo.2021.104141 ◽

2021 ◽

Vol 135 ◽

pp. 104141

Author(s):

Wei-Bin Chen ◽

Wan-Huan Zhou ◽

Łukasz Sadowski ◽

Zhen-Yu Yin

Keyword(s):

Shear Strength ◽

Surface Morphology ◽

Granular Soil ◽

Interface Shear Strength ◽

Interface Shear

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Influence of revision arthroplasty on bone/cement interface shear strength

Journal of Biomechanics ◽

10.1016/0021-9290(87)90134-5 ◽

1987 ◽

Vol 20 (8) ◽

pp. 824

Author(s):

J.E. Bechtold ◽

Y. Dohmae ◽

R.E. Sherman ◽

R.B. Gustilo

Keyword(s):

Shear Strength ◽

Bone Cement ◽

Revision Arthroplasty ◽

Interface Shear Strength ◽

Interface Shear ◽

Cement Interface

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Skewness and Kurtosis: Important Parameters in the Characterization of Dental Implant Surface Roughness—A Computer Simulation

ISRN Materials Science ◽

10.5402/2011/305312 ◽

2011 ◽

Vol 2011 ◽

pp. 1-6 ◽

Cited By ~ 22

Author(s):

Karl Niklas Hansson ◽

Stig Hansson

Keyword(s):

Surface Roughness ◽

Shear Strength ◽

Roughness Parameter ◽

Interface Shear Strength ◽

Interface Shear ◽

Implant Surface ◽

Bone Response ◽

Dental Implant Surface ◽

Skewness And Kurtosis

The surface roughness affects the bone response to dental implants. A primary aim of the roughness is to increase the bone-implant interface shear strength. Surface roughness is generally characterized by means of surface roughness parameters. It was demonstrated that the normally used parameters cannot discriminate between surfaces expected to give a high interface shear strength from surfaces expected to give a low interface shear strength. It was further demonstrated that the skewness parameter can do this discrimination. A problem with this parameter is that it is sensitive to isolated peaks and valleys. Another roughness parameter which on theoretical grounds can be supposed to give valuable information on the quality of a rough surface is kurtosis. This parameter is also sensitive to isolated peaks and valleys. An implant surface was assumed to have a fairly well-defined and homogenous “semiperiodic” surface roughness upon which isolated peaks were superimposed. In a computerized simulation, it was demonstrated that by using small sampling lengths during measurement, it should be possible to get accurate values of the skewness and kurtosis parameters.

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