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Showing 1 to 20 of 124 for “"SHEAR TESTS"”.
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Correlation of three standard shear tests for unidirectional glass-epoxy composites
The shear strength of unidirectional glass-epoxy composites was determined experimentally by three standard shear tests. The tests consisted of short beam interlaminar shear tests, saw-cut shear tests, and torsion tests on circumferentially wound cylinders. Test results show that the short beam …
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Undrained creep behavior of Atchafalaya clay from Cu direct-simple shear tests.
Massachusetts Institute of Technology. Dept. of Civil Engineering. Thesis. 1973. Civ.E.
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Measuring Liquefied Residual Strength Using Full-Scale Shake Table Cyclic Simple Shear Tests
… consists of full-scale cyclic shake table tests to investigate liquefied residual strength of #2/16 Monterey Sand. A simple shear testing apparatus was mounted to a full-scale one-dimensional shake table to mimic a confined layer of saturated sand subjected to strong ground motions. Testing …
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Integrated computational-experimental soil behavior characterization from direct simple shear tests on Boston Blue Clay
… value problems. However, most laboratory tests are interpreted with an assumption of uniform stresses and strains within the tested soil specimen even when the specimen is known to experience non-uniform stress-strain distribution as in the Direct Simple Shear (DSS) test. Numerous tests …
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An investigation of liquefied shear strength using novel centrifuge tests, direct simple shear tests, and field case histories
… failures, renewed interest in the mobilized shear strength during flow liquefaction failures, usually termed the liquefied shear strength, su(liq). Statistics indicate that although the number of failures and incidents at tailings storage facilities decreased in the past 30 years or so, the …
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Direct shear and direct simple shear tests: a comparative study of the strength parameters and their dependence on moisture and fines contents
Shear strength of soil is characterized by cohesion, angle of internal friction and dilatation. The first two parameters mentioned primarily define the soil's ability to resist shear stress underspecified load. These parameters can be determined by tests conducted either in the laboratory or the …
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The behaviour of clay in simple shear and triaxial tests
… of critical state soil mechanics to simple shear testing. The problems with the simple shear apparatus and the approach for interpreting simple shear test results are described. Laboratory tests were conducted using the NGI simple shear apparatus, standard shear box arid computer controlled …
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Comparison of direct shear and triaxial tests for measurement of shear strength of sand
To ascertain the shear strength parameters of soils for engineering purposes is fundamental to soil mechanics and basic for designing earth-bearing and earth-retaining structures. Direct shear and triaxial tests are the most popular laboratory methods to determine these parameters. The direct shear …
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Effects of Freezing Temperature on Interface Shear Strength of Landfill Geosynthetic Liner
… few decades. The present work emphasizes the shear strength of geocomposite clay liner (GCL) and geomembrane interface in landfills. Using direct shear tests, shear stress was measured as a function of normal load to determine the values of interface frictional angle and adhesion of the …
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Experimental studies of scale effects on shear strength, and deformation of rock joints
The effect of scale on shear strength is studied by performing direct shear tests on different sized samples of large joints. A rubber moulding system is used to obtain impressions of the roughness from a variety of natural joint surfaces. A brittle model material is developed and used to cast …
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The mechanical design aspects of a small diameter vascular prosthesis
… are determined from uniaxial tension tests, simple-shear tests and viscoelastic shear tests. The constitutive equations for a compressible, large strain hyper elastic material model with viscoelasticity are implemented in the finite element code using material constants calculated from …
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An Experimental Study of the Dynamic Behavior of Slickensided Surfaces
When a clay soil is sheared, clay particles along the shear plane become aligned in the direction of shear, forming "slickensided" surfaces. Slickensided surfaces are often observed along the sliding plane in field landslides. Because the clay particles along a slickensided surface are already …
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A resistência residual de solos determinada através do ensaio de cisalhamento por torção
The ring shear equipment developed by Bromhead (1979) to measure the soil residual strength is used here. Initially a detailed literature review on the residual strength is presented. It follows a description of equipment and test procedures. For comparison purposes, results of the direct shear …
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Süreksizliklerin statik ve dinamik koşullardaki kesme dayanımının yapay süreksizlikler yoluyla karşılaştırılması
… type of rock was subjected to monotonic direct shear tests under six different normal loads and their bi–linear failure envelopes were constructed. Similarly, the artificial discontinuities of the same rocks with a new set of specimens were subjected to cyclic shear tests under six different …
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Drained cyclic preshearing effects on the liquefaction resistance of sands
… resistance of coarse-grained soils. Among these, shearing history has been shown to either decrease or increase liquefaction resistance. This past shearing – known as “preshearing” – is defined as the process of minor grain adjustments into a more stable configuration under external shear stress, …
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A magnetorheological study of single-walled and multi-walled carbon nanotube dispersions in mineral oil and epoxy resin.
… frequency sweeps, magneto sweeps and steady shear tests were conducted in various magnetic fields. G', G", h* and ty increased with increasing magnetic field, which was partially attributed to the increasing degree of the alignment of nanotubes in a stronger magnetic field. The SWNT/mo …
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Geotechnical properties of carbonate soils with reference to an improved engineering classification
… index for carbonate sands. Results from direct shear tests showed that this parameter correlates well with crushability and compressibility. It is recommended that this parameter (emax) as determined in the test devised by Kolbuszewski (1948), should be adopted as an index property for …
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Variation Of Geotechnical Strength Properties With Age Of Landfills Accepting Biosolids
… landfill materials as a function of time. Direct shear tests used for soil testing, with some modifications, were performed on cured compost samples of MSW mixed with biosolids. Geotechnical strength properties of these cured samples were compared to those of an artificially prepared mixture of …
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Investigation of strength of a hybrid adhesive anchor system used in precast concrete welded repair applications subjected to tensile and eccentric shear loading
… systems. This dissertation outlines bond tests, eccentric shear tests, and a temperature investigation performed using a hybrid adhesive system in precast concrete repair applications. In addition, limited bond strength testing data using a high strength two-part epoxy adhesive is also …
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Behavior of bolted connections during and after a fire
… of bolted connection at elevated temperature. Shear strength of A325 and A490 high strength bolts were studied with double shear tests performed at different temperature levels, from ambient temperature to 1500°F. It was found that both types of bolts reduce their strength significantly between …
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