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Shear friction in recycled aggregate concrete
Journal of Sustainable Cement-Based Materials, 2016Initially uncracked push-off specimens were tested to investigate shear friction in recycled aggregate concrete (RCA) with concrete grade, clamping force and the replacement level of recycled aggregates being the variables. Deformation behavior and failure modes were observed to be similar between the natural and the RCA specimens with the ‘concrete ...
Nikhil Shejwadkar +2 more
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The FRP Reinforced Shear-Friction Mechanism
Advances in Structural Engineering, 2012The ability of reinforced concrete to resist shear forces across possible sliding planes is a well established area of research and is also recognised as an important aspect of the ability of reinforced concrete members to both resist loads and deformation.
Lucas, W. +3 more
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Nanoscale Frictional Dissipation into Shear-Stressed Polymer Relaxations
Physical Review Letters, 2009Sliding friction between a silicon tip and a highly cross-linked polyaryletherketone film is studied using friction force microscopy. The friction force as a function of temperature between 150 and 500 K shows distinctive maxima corresponding to alpha and beta polymer relaxations in dynamic mechanical analysis (DMA).
Lars, Jansen +6 more
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Shear Strength and Polymer Friction
1974The friction coefficient of thin polymer sheets under high loads can be accounted for by a simple extension of the adhesion theory of friction in which the pressure dependence of the shear strength of the polymer is taken into consideration. Recent measurements on polypropylene films, as well as earlier data on several other polymers, are used to ...
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Fracture toughness of snow in shear under friction
Physical Review E, 2002The fracture toughness of snow in shear is one of the most relevant parameters when studying the mechanics of snow slab avalanche release. Double-cantilever snow beams were loaded asymmetrically to determine K(IIc). If crack surfaces touch under applied pressure, the fracture toughness in shear of snow (rho=247 kg m(-3)) is K(IIc)=680+/-60 Pa m(1/2 ...
H O K, Kirchner, G, Michot, J, Schweizer
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Shear Friction and High-Strength Concrete
ACI Structural Journal, 2001This paper reports a re-appraisal of available shear friction test data and presents simple, modified shear friction equations suitable for use in design. These equations reflect the influence of concrete strength on shear friction strength. They enable full advantage to be taken of the potentially high-shear-friction strengths of very-high-compressive
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Proposed Revisions to Shear-Friction Provisions
PCI Journal, 1978This paper gave us the basis for the effective shear friction coefficient still used in the PCI Handbook.
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Reducing shear and friction: Parafricta undergarments
Nursing and Residential Care, 2008Andy Kerr discusses the role that Parafricta undergarments can play in reducing the potential for pressure ulcers in immobile patients.
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On double shearing in frictional materials
International Journal for Numerical and Analytical Methods in Geomechanics, 2006AbstractThis paper evaluates the mechanical behaviour of yielding frictional geomaterials. The general Double Shearing model describes this behaviour. Non‐coaxiality of stress and plastic strain increments for plane strain conditions forms an important part of this model. The model is based on a micro‐mechanical and macro‐mechanical formulation.
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Elastic–plastic shear deformation of frictional granular materials
International Journal for Numerical and Analytical Methods in Geomechanics, 1983AbstractA theory describing plastic deformation of granular (purely frictional) materials is presented. The theory is developed from postulates for energy dissipation and for the mode of plastic deformation. The postulates are based on some restrictions for the properties of granular materials and on a frictional analogy.
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