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The main purpose of compaction testing is to find the optimum moisture content of a soil. The optimum moisture content is that which will give the maximum dry density (and hence maximise shear strength and bearing capacity, as well as reducing settlement, porosity and permeability).*
* This reduction in permeability will effect the time taken for excess pore pressures to dissipate and so will have an effect on the time taken for consolidation to occur.
Source:
Craig, R.F. (1997). Soil Mechanics. Sixth Edition. Chapmen & Hall, London.
What else can I help you with?
If you are a geotechnical engineer in what situations would you specify shear box testing as an aid to geotechnical design?
Shear box tests are used to derive the following soil properties:The peak shear strengthAThe residual shear strength (may also be referred to as the critical state)BThe cohesion (where applicable)CThe friction angleDA Derived by plotting the shear stress vs. horizontal strain and finding the maximum shear stress value.B Derived as above, but from the post peak horizontal portion of the stress strain curve.C Derived from a plot of peak shear stress vs. normal stress and is equal to the shear stress where the line of best fit intersects the shear stress axis. NB for cohesionless materials such as clean sands or gravels this value will be zero.D Derived from same plot as C but is calculated by Tan-1((Shear stress - Cohesion) / Normal stress)).Please see the related link for further information.
Diffeece between nominal mix and design mix?
a nominal mix is that mix in which we adopt the various ingredients such as1:2:3,1:2.5:4etc here the strength will not be the desired strength and generally here we take the ingredients per unit vol a design mix is that mix in we find the ratio of the different ingredients as per the desired strength and the ingredients would be in per unit weight
What is characteristic strength of steel?
Characteristic Strength is a term used regionally in order to describe the engineering strength of a material. In other words, the Characteristic Strength is the strength of a material (i.e. steel, concrete, etc.) which has been established by a testing and standards body such that, statistically, a defined percentage of material samples, when tested, exhibit strength at or above the characteristic value. This Characteristic Strength is then used by engineers and designers as the material design strength. In the case of steel or other ductile materials which exhibit post-yielding strength, the characteristic strength generally refers to the material elastic response only.
What is the link between CBR and bearing capacity if you get figures in CBR how can you link them to the bearing capacity in kPa?
The link between CBR and bearing capacity if you get figures in CBR how can you link them to the bearing capacity in kPa, this is the link in soil testing.
What is pour card in civil engineering?
In larger concrete projects with a good quality control program, a pour card is a document that describes the location of the concrete being poured, type/specification of concrete being supplied, a signature block by the inspector and/or engineer indicating that the rebar has been inspected in-place and approved, date of pour, serial number of the concrete truck(s) supplying the concrete, sign-off by the inspector indicating on-site tests for slump and air entrainment (if required) have been completed. Temperature, weather and ticket info from the concrete batch plant/delivery truck are also recorded. The contractor's quality assurance manager will typically keep all the pour cards for a project on file, especially in the even that subsequent testing indicates substandard concrete was installed.
What are some geotechnical jobs in the engineer field?
There are quite a few options for a geotechnical position in the field of engineering. For instance, many civil engineering firms have qualified personnel simply for geotechnical field testing. There are also land surveying firms that offer geotechnical support as sub contractors to consulting firms.
What is saturated unit weight of soil?
The saturated unit weight of soil is the weight of soil per unit volume when all pore spaces are filled with water. It is commonly used in geotechnical engineering to characterize the density of saturated soil samples during testing.
List out testing tools in software engineering?
listout some othe the testing tools ing software engineering
Why study soil mechanics as a separate discipline?
Soil Mechanics like fluids mechanics and structural mechanics and engineering surveying are the core disciplines of civil engineering for well over 70 years from the days of Terzaghi, father of soil mechanics. It is a separate discipline since soil behaviour cannot be predicted like the methods used for testing the behaviour of structures and fluids,yet ideas similar to these disciplines have been used but the testing and classification of soil had to be on its own. Now the discipline has a broad base to be known as geotechnics or geotechnical engineering.
Why should there be soil testing on every construction project?
Soil testing determines the quality of soil by assessing its strength, compaction, density, contamination and more. Determining soil quality is necessary in order to identify if the soil is strong enough to bear the construction project. It also tells if necessary adjustments should be made either on the site or the project itself. Structural engineers also require these assessments and tests to know the suitable foundation base that will be used. This includes soil testing which is usually performed by a professional geotechnical engineer.
What is the purpose of controlling the environment when testing a hypothesis?
The purpose of controlling the environment when testing a hypothesis is ultimately to get a reliable result to the study.
What is the purpose of vibration testing?
The purpose of vibration testing is to ensure the mechanics or construction of something is working properly by literally shaking or vibrating the device. This can screen for mechanical, electrical or engineering flaws.
What has the author James R Talbot written?
James R. Talbot has written: 'Quality control of soil compaction using ASTM standards' -- subject(s): Fills (Earthwork), Quality control, Testing, Soil compaction, Standards
What is the purpose of engineering standards?
The purpose of engineering standards is to ensure consistency, safety, and quality in the design, manufacturing, and testing of products and systems. They provide a common framework and set of guidelines that facilitate communication and collaboration among engineers, manufacturers, and regulatory bodies. By adhering to these standards, organizations can minimize risks, enhance interoperability, and improve overall efficiency in engineering processes. Additionally, they help protect public health and safety, as well as the environment.
What has the author Harold L Gilmore written?
Harold L. Gilmore has written: 'Integrated product testing and evaluation' -- subject(s): Commercial products, Engineering inspection, Reliability (Engineering), Testing
What is the purpose of presurgical testing?
Presurgical testing psychologically and physically prepares a patient for surgery.
What is the purpose of asbestos testing?
I don't know what asbestos testing is. Can somebody tell me more about it?
