What is CC in consolidation test?
The compression index, Cc , which indicates the compressibility of a normally-consolidated soil. The recompression index, Cr , which indicates the compressibility of an over-consolidated soil. The coefficient of consolidation, cv , which indicates the rate of compression under a load increment.
How do you do a consolidation test?
Consolidation test consists of applying the pressure on a thin soil specimen in increments and keeping each pressure increment for sufficient time until the consolidation of the soil specimen and measurement of the vertical deformation of the soil specimen due to expulsion of pore water.
What is CU and CC in sieve analysis?
The uniformity coefficient (Cu) and the coefficient of gradation (Cc) are the measures of soil gradation. These coefficients help to classify the soil as well graded or poorly graded ones.
What is CC in Geotech?
Coefficient of Cuvature (Cc) is a value that can be used to identify a poorly graded soil. 60.
What is difference between consolidation and settlement?
With debt consolidation, multiple loans are all rolled into a new consolidation loan that has one monthly interest rate. With debt settlement, either you or a credit counselor negotiates with your creditors so that you can pay a lower amount than what you owe, often in a lump-sum settlement.
What is primary and secondary consolidation?
To distinguish between the two mechanisms, “primary consolidation” refers to consolidation due to dissipation of excess water pressure, while “secondary consolidation” refers to the creep process.
Why is consolidation test done?
Consolidation test is used to determine the rate and magnitude of soil consolidation when the soil is restrained laterally and loaded axially. The Consolidation test is also referred to as Standard Oedometer test or One-dimensional compression test.
Where is consolidation test used?
saturated soil specimens
This test is carried out on saturated soil specimens, especially in cohesive soils. The consolidation parameters obtained by this test are used to determine the consolidation settlement and time of consolidation for a given loading state (i.e. given height of embankment).
What is difference between compaction and consolidation?
Compaction is the compression of soil by the expulsion of air from the voids of the soil. Consolidation is the compression of soil by the expulsion of water from voids of the soil.
What is the value of CC&CR from consolidation tests?
Cc & Cr from consolidation tests Other relationships Cc ≈ 0.0054(2.6*MC-35) (a) Cc ≈ 0.009(LL-10) (b) Cr ≈ 10%-25% Cc (c)
Can we predict the magnitude of consolidation settlement from laboratory data?
•Data obtained from laboratory testing can be used to predict magnitude of consolidation settlement reasonably, but rate is often poorly estimated. field GL lab Undisturbed soil specimen metal ring (oedometer) porous stone Wide foundation simulation of 1-D field consolidation in Lab Saturated clay Sand or Drainage layer
What is a 1-D consolidation test?
Civil Engineering – Texas Tech University 1- D Consolidation Test The main purpose of consolidation tests is to obtain soil data which is used in predicting the rate and amount of settlement of structures founded on clay.
How do you test the coefficient of consolidation of a sample?
1 LABORATORY TESTING The coefficient of consolidation (c. v) can be evaluated using information obtained from the laboratory consolidation test if, each time you put a load increment on the sample, you monitor the change in the height of the sample over time. As discussed in the last class, c.