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Volume :23 Issue : 2 1996      Add To Cart                                                                    Download

The interface angle of friction between dry sand and lubricated surfaces

Auther : HASAN AL-SANAD1 AND MOSTAFA A. ABU KIEFA2

 

1,2 Department of Civil Engineering, University of Kuwait, P. O. Box 5969, Safat 13060, Kuwait

 

ABSTRACT

The interface angle of friction between dry sand and various kinds of lubricated construction materials is investigated experimentally with a direct shear test. Nine different construction materials with various surface roughness and five lubricants are utilized. The interface angle of friction between Jahra sand and lubricated construction material is measured for a wide range of normal stresses and different relative densities.

The study shows the effectiveness of using lubricant in reducing the friction between construc­tion materials and sand. The magnitude of the interface angle of friction between sand and lubricated surfaces varies significantly with the surface roughness of the construction material, the viscosity of the lubricant, the relative density of the sand, and the normal stress among other factors. The study also shows that the interface angle of friction increases for some construction material with some types of lubricant.


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