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how use the result of vane shear test
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What are true slump and shear slump in slump test?
A shear breaks off or crumbles. A slump stays together however it will slump down.
What is a soil test for building construction?
There are a large number of soil tests related to construction:Particle Size Distribution test - finds the relative proportions of differing grain sizes within a soilAtterberg Limit test - used to establish the plasticity class of the soilCompaction test - used to find the optimum moisture content to achieve a maximum densityConsolidation / Oedometer testing - used to establish the settlement potential of a fine grained soil.Direct Shear test - used to measure the peak (and potentially residual) shear strengths of a soil. When tested at varying confining loads can be used to find the shear strength parameters Phi' and c'*Triaxial testing - used to find the elastic properties of the soil (Young's Modulus and Poisson's Ratio) along with the shear strength. These may be either drained or undrained tests.Constant and falling head permeability tests - used to establish the hydraulic conductivity / coefficient of permeability for coarse and fine grained soils respectively.*Note in the UK c' is assumed to be zero for design purposes, in other countries small non zero c' may be used.
What is liquid limit?
The arbitary limit of water content that represents the boundary between the liquid & plastic state is called as liquid limit.
Ultimate strength of steel in tension and shear?
Static and Dynamic Yield Stress: What's the difference and which should I use?The most commonly used method for obtaining a yield stress value is to shear the sample over a range of shear rates, plot the shear stress as a function of shear rate and fit a curve (various models are available) through the data points (see fig 1).The intersection on the stress axis is then taken as the yield stress, the assumption being that any stress below this is insufficient to cause the sample to flow. Rheologists call this a dynamic yield stress; we are looking at the sample in motion (i.e. under shear) and extrapolating from this how it behaves when not in motion.However, there's more than one way to skin a cat! Another approach is to start with the sample in its at-rest state (zero shear) and incrementally increase the stress until we identify at value at which it starts to flow i.e. we record non-zero shear rate (see fig 2)We call this value a static yield stress - the stress at which we initiate flow - and it is usually considerably higher than its dynamic counterpart for any given product. In reality the sample is undergoing creep flow below this stress but we can assume for many practical purposes that it is static. This test can be performed with a quick (non-equilibrium) stress ramp on a controlled stress rheometer or a constant rate test on a vane-based tester.So which yield stress should you use?Well it depends on what you need to know. A good starting point is to match the test type to the flow process of interest: If you are interested in how a fluid stops flowing after shear (such as screen printing, dip coating, enrobing or slumping) then the dynamic yield stress is a key determinant. On the other hand if you are interested in how hard you need to push to get the fluid moving in the first place (spreadability of butters, texture of tubs of cream, mixer and pump start-up etc) then the product's static yield stress will prove a major factor.
What are some questions on a structural fitter test?
Math and types of tools to be used. Safety practice. some rigging question
Differences between triaxial test and shear box test?
Shear box tests are generally suitable for cohensionless soil except fine sand and silt whereas triaxial test is suitable for all types of soils. Pressure changes and volume changes can be measured directly in triaxial test which is not possible in shear box test. Pore water pressure can be measured in the case of triaxial test which is not possible in direct shear test. Triaxial machine is more adaptable. The stress distribution across the soil sample in the failure plane is more uniform in triaxial test. The complete state of stress is known at all intermediate stages up to failure during the triaxial test whereas only the stress at failure are known in the direct shear test. In triaxial test, there is complete control over the drainage conditions, where control of drainage conditions is very difficult in shear box test.
Direct shear test of metal specimen?
what the neccecities of shear test of brass & mild steel
What has the author F A De Lory written?
F. A. De Lory has written: 'An investigation of discrepancies in undrained shearing strength test results in clay' -- subject(s): Clay, Shear strength of soils, Testing
How do you test for starch in yam?
The iodine test is applicable.
How do you test the acidity of soils?
use a ruler
If you are a geotechnical engineer in what situations would you specify shear box testing as an aid to geotechnical design?
As a geotechnical engineer, shear box testing can be specified as an aid to geotechnical design in several situations, particularly when dealing with cohesive soils or materials with shear strength considerations. Here are some scenarios where shear box testing may be beneficial: Determination of Shear Strength Parameters: Shear box testing is commonly used to determine the shear strength parameters of soils, such as the cohesion (c) and angle of internal friction (φ). By applying controlled shear stresses to soil samples in a shear box apparatus, engineers can measure the shear resistance and deformation characteristics of the soil under various loading conditions. Stability Analysis of Slopes and Embankments: Shear box testing can provide valuable data for assessing the stability of slopes, embankments, and other geotechnical structures. By analyzing the shear strength parameters obtained from shear box tests, engineers can evaluate the potential for slope failure, assess factors of safety, and design appropriate reinforcement measures. Evaluation of Soil Stabilization Techniques: Shear box testing can be used to evaluate the effectiveness of soil stabilization techniques, such as the addition of stabilizing agents or geosynthetic reinforcements. By conducting shear box tests on treated soil samples, engineers can assess the changes in shear strength and deformation behavior resulting from the stabilization measures. Pavement Design and Evaluation: Shear box testing can be useful in pavement design and evaluation, particularly for assessing the shear strength and deformation characteristics of subgrade soils. It can help engineers determine the appropriate design parameters for flexible or rigid pavements and evaluate the potential for shear failure or excessive deformation under traffic loads. Analysis of Soil-Structure Interaction: Shear box testing can aid in the analysis of soil-structure interaction problems, such as the behavior of foundations or retaining walls. By understanding the shear strength properties of the surrounding soil, engineers can better assess the stability and load-bearing capacity of these structures. It's important to note that shear box testing is just one of the tools available to geotechnical engineers, and its applicability depends on the specific project requirements, soil characteristics, and design considerations. The decision to specify shear box testing should be based on a comprehensive understanding of the project needs and consultation with other relevant geotechnical testing methods and analysis techniques.
What is moisture test?
speedy moisture test are use to determine the moisture in the different soils.
What are true slump and shear slump in slump test?
A shear breaks off or crumbles. A slump stays together however it will slump down.
What is speedy moisture test?
speedy moisture test are use to determine the moisture in the different soils.
Is Lucas test applicable for cyclohexanol?
The Lucas test is applicable for cyclohexanol. Cyclohexanol is a secondary alcohol and s reported to react with the Lucas reagent after a few minutes.
Will the disk test be applicable to a ductile material?
yes
Did they test ddt?
DDT can be determined in soils, waters, plants, etc.
