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According to the Handbook of tropical residual soils(Huat et al, 2012), it's a 100mm diameter sample up to 450 mm long, obtained with the British U100, which is an open-driver sampler that produces samples with much higher quality than the SPT.
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What are the advantages of conducting an experiment on undisturbed soil sample compared to disturbed soil sample?
A disturbed sample is one in which the structure of the soil has been changed sufficiently that tests of structural properties of the soil will not be representative of in-situ conditions, and only properties of the soil grains (e.g., grain size distribution, Atterberg limits, and possibly the water content) can be accurately determined. An undisturbed sample is one where the condition of the soil in the sample is close enough to the conditions of the soil in-situ to allow tests of structural properties of the soil to be used to approximate the properties of the soil in-situ.
What is the general appearance of the soil sample?
Brown.
In which type of soil would you expect to see most bubbles when water is mixed with the soil sample?
clay soil
Why do you do a soil sample and analysis?
To check the acidity of the soil and to see at wat level the soil will be able to support life
What substance found in a soil sample collected in an arid region would most likely be absent in a soil sample collected in a humid region?
rock salt
Where can one watch u100 videos online?
You can watch videos online for the u100 at UCWeb. You can also find a collection of videos for the u100 at video forums such as YouTube and Metacafe by using their search function.
A typical soil sample is an example of a homogeneous mixture?
No, a typical soil sample is heterogeneous.
What is the thinnest mobile?
Samsung U100
What are the advantages of conducting an experiment on undisturbed soil sample compared to disturbed soil sample?
A disturbed sample is one in which the structure of the soil has been changed sufficiently that tests of structural properties of the soil will not be representative of in-situ conditions, and only properties of the soil grains (e.g., grain size distribution, Atterberg limits, and possibly the water content) can be accurately determined. An undisturbed sample is one where the condition of the soil in the sample is close enough to the conditions of the soil in-situ to allow tests of structural properties of the soil to be used to approximate the properties of the soil in-situ.
What is the best speed to separate a soil sample in a centrifuge?
Very high speed is the best speed to separate a soil sample in a centrifuge.
How can porosity be measured?
Porosity is measured by taking a sample of the soil. The sample is then tested to measure the speed of water passing through the soil.
How do you neutralize soil after fertilized?
To neutralise a sample of soil, you must determine the pH of the soil sample either acidic or alkaline. Add lime (e.g. Limestone) to acidic soil to neutralise it. And add sulphur to alkaline soil which will neutralise it.
What is the general appearance of the soil sample?
Brown.
How can iron filings be separated from the soil sample?
Iron is magnetic so move a magnet through your soil sample to remove all the iron fillings.
The amount of each kind of soil particle in a sample determines the blank of the soil?
Dirt
In which type of soil would you expect to see most bubbles when water is mixed with the soil sample?
clay soil
Why do you do a soil sample and analysis?
To check the acidity of the soil and to see at wat level the soil will be able to support life
