Shear Test Research Papers - Academia.edu (original) (raw)

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- Materials Science, Viscoplasticity, Fracture, Electronic Materials
- by William vargas vargas
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- Soil Mechanics, Liquefaction, Sample Preparation, Anisotropy
- by Jennifer Nguyen
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- Soldering, Reliability, Thermal Shock, Mechanical Stress
- by Simon Austin
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- Civil Engineering, Microstructure, Comparative Study, Building
- by Sahel Abduljauwad
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- Civil Engineering, Geology, Geotechnical Engineering, Modeling
- by Fernando Branco
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- Engineering, Civil Engineering, Experimental Research, Stainless Steel
- by Antonio Aguado
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- Civil Engineering, Fiber, Building, Building and Construction Materials

To prevent segregation and bleeding in concrete a some decade ago started practicing of fiber addition in concrete this gave a good result M30 mix is considered for work with 1% of fiber addition i.e 0.5% of Polypropylene + 0.5% of Hooked end Steel Fiber, with 0.45 w/c ratio and 1.5% of super plasticizer for workability of concrete. Conducted various tests like Slump cone test, compressive test, spilt tensile test, flexural test, and shear test for concrete. Then FRP product E-Glass fabric or GFRP used for lamination purpose of 900 gsm to specimens then laminated specimens are also tested above mentioned experiment expect slump test. Results are compared after 28 days of curing with normal concrete to hybrid concrete and with GFRP to without GFRP lamination. Result has shown increase in strength with normal to hybrid concrete and also increase in with GFRP lamination when compared to without GFRP lamination.

- by J4R - Journal for Research
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- Gfrp, Shear Test, Split Tensile Test, Hooked end Steel Fibre (HeSF)
- by Karin Lundgren
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- Joint, Shear Test
- by Osvaldo Campanella
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- Chemical Engineering, Materials Science, Food, Ultrasound

Moisture, fat and protein content were studied as factors likely to contribute to the viscoelastic properties of spreadable-type processed cheese samples obtained from oscillatory shear tests. Elastic and viscous moduli, loss tangent, complex modulus and complex viscosity were determined in a frequency sweep test. Processed cheese samples exhibited differences in their linear viscoelastic behavior due to their different chemical composition. Two distinct groups of samples were observed; processed cheeses that behaved like concentrated macromolecular solutions and processed cheeses that exhibited dilute solution behavior. Prediction models were obtained by multiple regression analysis that describe the relationship between chemical composition of processed cheese and linear viscoelastic properties of the final product. Moisture acted as a plasticizer and fat as a lubricant both contributing to a more liquid-like behavior of the samples. In contrast, proteins reinforced the strength of the three-dimensional matrix leading to processed cheeses with more solid-like behavior.

- by Apostolos Thomareis
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- Food Engineering, Properties, Prediction Model, Multiple regression analysis
- by Peter Horst
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- Engineering, Mechanical Engineering, Aerospace Engineering, Modeling
- by Apostolos Thomareis
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- Food Engineering, Properties, Prediction Model, Multiple regression analysis

Bamboo in an extraordinary nature material. Bamboo can grow fast, the price is cheap, and available everywhere. The weight is light but it is harder and stronger than regular wood and fiberglass. The main purpose of this research is to know the impact of open air and emersion of seawater to the part of fiber of petung bamboo towards interface bond, epoxy matrix, of the lamination of the bamboo. This research has conducted a compression test, tensile test, and shear test towards the interface bond in the direction of x,y, and z axis using the standard of ASTM D143. The changes of open air impact happened from week 0 to 9 reach the number of 40% and the emersion of seawater was 70%. The average results obtained 9 weeks for the influence of open air and sea water is a tensile test of 33.68 kg / cm2, 21.72 kg / cm2. Shear test of 24.37 kg / cm2.13.87 kg / cm2. Compressive test 333.53 kg / cm2, 316.80 kg / cm2. The average compressive strength of laminated bamboo after undergoing treatment for 9 weeks can be classified into Class II and Class III in BKI Ship Kayu regulations. The test results show that the tensile strength and compressive strength better brick arrangement, while for shear strength better aligned. The best tensile strength test direction on the Y axis, the best shear strength test direction on the Z axis, and the best compressive strength test direction on the X axis. The higher the Interface resin value at each cm2, the greater the strength of the interface bond due to the need for resin in mm / cm2 the higher, conversely the lower the value of Interface resin in each cm2, the lower the bond strength of the interface due to the lower resin requirements in mm / cm2.

- by IAEME Publication
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- Composite, Open Air Site, Sea Water, Tensile Test
- by Gonzalo Ramos
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- Civil Engineering, Fracture Mechanics, Failure Analysis, prestressed Concrete
- by Aitor Cristian Raposeiras
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- Shear Test

ABSTRACT Results are reported for pressure-shear plate impact experiments designed to study the competition between dynamic shear fracture and dynamic shear band formation for a crack subjected to plane wave loading in Mode III. Experiments showing the propagation of a shear band ahead of the main crack are analyzed by using methods developed previously by others for the diffraction of an elastic shear wave by a semi-infinite crack. Based on measured, room-temperature flow stresses, the predicted speed of propagation of the tip of the band is found to be substantially less than that corresponding to the measured extension of the shear band in the experiments. Possible reasons for differences between predicted and measured shear band speeds are discussed. Reduced shearing resistance in the shear band, presumably due to thermal softening, is viewed as the likely explanation for the relatively long shear bands observed.

- by Rodney Clifton
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- Engineering, Materials Science, Modeling, Experience Design
- by M. Okamura
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- Liquefaction, Grain size distribution, ARENA, SAND
- by Hossein Darijani
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- Civil Engineering, Applied Mathematics, Modeling, Performance Evaluation
- by Antoine Duttine
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- Civil Engineering, Modeling, Stress analysis, Viscosity
- by Vincent B.C. Tan
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- European Union, Strain Rate, High strain rate testing, Reliability
- by Naresh Varma Datla
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- Materials Engineering, Mechanical Engineering, Chemical Engineering, Modeling

En el presente trabajo se presenta una serie de ensayos realizados en el Laboratorio de Tecnología de Estructuras de la Escuela de Ingenieros de Caminos, Canales y Puertos de Barcelona (Departamento de Ingeniería de la Construcción) de la... more

- by Gonzalo Ramos
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- Structural Analysis, Aggregate, Shear Strength, Residual Stress

Geosynthetics have increasingly been used to reinforce many earth structures and are now a well-accepted means to improve engineering properties of various types of soil. However, most previous studies and applications of geosynthetic stabilization are confined to noncohesive soils. Few research efforts have been dedicated to the feasibility and benefits of geosynthetic reinforcement on cohesive soils. This paper presents the results of an extensive laboratory testing program using a large direct shear device, in which four ...

- by Murad Abufarsakh
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- Materials Engineering, Civil Engineering, Geotechnical Engineering, Interaction
- by Cao Son Pham
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- Engineering, Civil Engineering, Mathematics, Structural Engineering
- by William david Rodriguez vargas
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- Soil Mechanics, Liquefaction, Sample Preparation, Anisotropy

This paper experimentally investigates the rheology of dense granular flow through itssolid-like to fluid-like transition. Between the well-established flow regimes – quasi-static and grain-inertial – the physical description of the transition remains elusive. Our experiment uses a top-rotating torsional shear cell capable of ± 1 μm accuracy in height and 5 decades (10−3 − 100 rad s−1) in rotation rate. The data on beach sand shows that shear and normal stresses exhibit an inverse rate-dependence under a controlledvolume environment in the transitional regime, while in the limiting regimes the results are in agreement with previous work. Theshear-weakening stresses illustrate a previouslyunknown ‘dip’ with increasingshear rate. Under a controlled-pressure environment, however, the shear-compacting volume-fraction ‘peaks’ with increasing shear-rate. We combine these results from both configurations to infer a constitutive law based on a rate-invariant granular fluid compressibility. ...

- by Emily Brodsky
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- Engineering, Materials Science, Fluid Mechanics, Granular Flow
- by Osvaldo Campanella
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- Chemical Engineering, Materials Science, Food, Ultrasound

The drained residual shear strength of overconsolidated clays is an important parameter in assessing the stability of slopes that contain a preexisting shear surface. The main issue influencing a laboratory testing program to measure the drained residual strength is whether a natural or laboratory-formed shear surface will be used. A multistage test procedure using a modified Bromhead ring shear apparatus and an overconsolidated, precut, remolded specimen is described that provides a reliable and practical method for measuring the drained residual shear strength. Results of ring shear tests on 32 clays and clay shales reveal that the drained residual strength is controlled by clay mineralogy and the quantity of clay-size particles. The liquid limit is used as an indicator of clay mineralogy, and the clay-size fraction indicates the quantity of clay-size particles, which are particles smaller than 0.002 mm. Therefore, increasing the liquid limit and clay-size fraction decreases the drained residual strength. The ring shear tests also reveal that the drained residual failure envelope is significantly nonlinear for overconsolidated clays with a clay-size fraction greater than 50% and a liquid limit between 60 and 220. Analysis of several case histories shows that this nonlinearity should be incorporated into a slope stability analysis. Previous correlations do not provide an accurate estimate of the drained residual strength because they (a) are based on only one soil index property, for example, clay-size fraction or plasticity; and (b) do not provide an estimate of the stress-dependent nature of the residual failure envelope. A new correlation is presented that is a function of the liquid limit, clay-size fraction, and effective normal stress and can be used to estimate the entire nonlinear residual failure envelope.

- by Timothy Stark
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- Engineering, Mineralogy, Case Studies, Soil Mechanics
- by Choong-un Kim
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- Materials Science, Viscoplasticity, Fracture, Electronic Materials
- by Anming Hu
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- Electronic Materials, Nanoparticle, Transmission Electron Microscopy, Copper
- by Kiyoshi Kishida
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- Civil Engineering, Rock Mechanics, Fracture Mechanics, Permeability
- by Halis Ider
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- Environmental Engineering, Civil Engineering, Design, Geotechnical Engineering
- by kelly ross
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- Chemical Engineering, Food, Ultrasound, Quality Control
- by Gonzalo Ramos
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- Structural Analysis, Aggregate, Shear Strength, Residual Stress
- by Fabrice Thouverez
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- Engineering, Viscoelasticity, Rheology, Elastomers
- by Mohit Mistry
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- Engineering, Civil Engineering, Materials Science, Scanning Electron Microscopy
- by Seunghyun Cho
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- Computer Science, Materials Science, Heat Treatment, Void
- by Ikuo Towhata
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- Civil Engineering, Behavior, Scanning Electron Microscopy, Anisotropy

The flowing behavior of granular soils in the form of localized deformations and shear bands is a difficult phenomenon to define explicitly in the modeling of soil-structure interface problems. However, for development of accurate... more

- by Tuncer Edil
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- Civil Engineering, Geology, Microstructure, Image Analysis
- by Timothy Stark
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- Environmental Engineering, Civil Engineering, Geology, Soil Mechanics

This paper presents a series of tests performed in the Structural Technology Laboratory of the Escuela de Ingenieros de Caminos, Canales y Puertos de Barcelona (Department of Construction Engineering) from the Polytechnic University of Catalonia. The campaign included a series of tests of beams section "Double T" Self Compacting Concrete of low strength (HAC-RM) and a parallel series using conventional concrete (HC) of the same mechanical strength. Was observed compared to the structural behavior of shear beams with reinforced concrete and prestressed reinforcement pretesa and postesa, and both continuous isostatic structures. The results show a lower resistance to shear at SCC beams with frame steel active and passive. For beams with prestressed SCC and HC, the shear strength values were similar.

- by Gonzalo Ramos
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- Structural Analysis, Aggregate, Shear Strength, Residual Stress
- by Ezio Giuriani
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- Wood, Shear Test

The use of conventional emulsions for tack coats can cause problems since they frequently stick to the tires of construction vehicles. Consequently the bond between the asphalt layers is inadequate. The importance of tack coats in... more

- by Rodrigo Miró
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- Engineering, Civil Engineering, Design, Urban And Regional Planning
- by Ken Morris
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- Engineering, Mechanical Engineering, Chemical Engineering, Powder technology
- by Hossein Darijani
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- Civil Engineering, Applied Mathematics, Modeling, Performance Evaluation
- by Alain Molinari
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- Mechanical Engineering, Civil Engineering, Image Processing, Plasticity

Current methods to improve the engineering properties of sands are diverse with respect to methodology, treatment uniformity, cost, environmental impact, site accessibility requirements, etc. All of these methods have benefits and drawbacks, and there continues to be a need to explore new possibilities of soil improvement, particularly as suitable land for development becomes more scarce. This paper presents the results of a study in which natural microbial biological processes were used to engineer a cemented soil matrix ...

- by Jason DeJong
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- Environmental Engineering, Civil Engineering, Soil Mechanics, Liquefaction