... comes into contact with surfaces of varying roughness, it exhibits different shear resistance behaviors. The findings further reveal insights into the dependency of the interface frictional characteristics and shear failure zone on the real area of contact, which includes irregularities on the surface...

... measure interface shear strength at such low effective normal stresses. 20 11 2012 09 09 2013 28 10 2013 interface friction critical state friction angle direct shear testing coated pipes References ASTM A1011/A1011-13 : Standard Specification for Steel, Sheet and Strip...

...Chadi S. El Mohtar; Milind V. Khire This paper presents a vertical pullout test (VPT) developed to measure the peak interface friction angle (δ) and adhesion (a) between soil and planar geosynthetic products. The key advantages of this test are (1) relatively low capital cost for the equipment, (2...

... method”) or multiple layers of thin plastic sheeting (“plastic sheet method”). Interface friction angles are often measured by direct shear-type tests. In this paper, a new sliding block testing device for measuring the friction at the interface between soil and different materials at low stress...

... in laboratory-scale model tests. KEYWORDS: shear strength, low stress, interface friction, direct shear, tilt-table Knowledge of the shearing resistance between soil and concrete, steel, geosynthetics, and wood is needed to evaluate the stability of many types of geotechnical structures. Numerous studies have...

...ES Reddy; DN Chapman; VVRN Sastry For precise estimation of shaft capacity of a pile, it is essential to determine accurately the soil-pile interface friction angle (δ). The apparatus available to measure the value of δ, the miniature pile test apparatus and the soil-pile-slip test apparatus...

... near the pile surface. KEYWORDS: tension piles, interface friction, load-displacement, T-Z method, laboratory testing apparatus, design details, pile foundation, T-Z curves, soil-pile-slip Notation Dr Relative density e Void ratio qt Ultimate tensile capacity SL ~r/~rc T Load Z Displacement t~ Friction...

... on two ends. The test method is simple and boundary conditions are well defined. The apparatus, theoretical formulation, and testing procedures are presented. The interface friction angle between dry Muskegon sand and three different materials: a cotton fabric, a fiber-glass mesh, and a nonwoven Geolon...

.... It is anticipated that a low-cost jute geotextile placed on a clay slurry surface without anchorage will expedite construction of sand seams by providing support for the thin sand layers and preventing penetration of sand into the clay slurry. In this application, the interface friction between the very soft clay...