Discuss about the hydrometer method to determine soil, Science

Assignment Help:

Discuss about the Hydrometer Method to determine soil

Bouyoucos devised a simple and rapid technique using a specially designed hydrometer to determine sand, silt and clay content of soil without separating them. In this method a known amount of the air dry soil (say 50 g of fine soil) is dispersed in a known amount of water containing calgon (sodium hexametaphosphate) solution. After a certain period of time, in this case 40 seconds, when the largest particle (the sand) will have settled on the bottom of the cylinder, the density of the liquid is determined with the help of a hydrometer.  This gives a measure of the silt and clay in the soil. So, the 40 sec reading is the reading "grams of silt and clay in suspension".  Similarly, a density measurement is performed at two hours when the silt would also have settled. This two hour reading reads "grams of clay". The amount of sand is determined by subtracting the 40 second reading from the total amount. 

 


Related Discussions:- Discuss about the hydrometer method to determine soil

Factors that affect the surface roughness of aluminum, This study will exam...

This study will examine surface roughness encountered in CNC milling and it will consider the factors that affect the surface roughness of aluminum and mild steel and the means by

Determine the hierarchical order of soil taxanomy, Determine the hierarchic...

Determine the hierarchical order of soil taxanomy Order: At this highest level of generalisation, the soils are distinguished on the basis of the degree of horizon developme

Model water wheels, Model water wheels A meat skewer or a knitting need...

Model water wheels A meat skewer or a knitting needle can be used as an axle. An old typewriter ribbon- spool or a sticking plaster reel is useful as a basis for these improvis

Atomic spectroscopy, Diagrammatically explain about the complementary natur...

Diagrammatically explain about the complementary nature of atomic absorption spectrophotometer and atomic emission spectrometry.n..

Parallel linear grooves are sometime worn into the rock, As glaciers erode ...

As glaciers erode the surface over which they move, sets of parallel linear grooves are sometime worn into the rock surface. These grooves are known as: Striations

Define the term bel, Define the term Bel Bel, the unit of measurement o...

Define the term Bel Bel, the unit of measurement of sound, is named after Alexander Graham Bell; Bell was the inventor of the telephone, but for some curious reason, is spelt w

Student, how increases in atmospheric concentrations of carbon dioxide and ...

how increases in atmospheric concentrations of carbon dioxide and other greenhouse gases cause global warming.

Explain the submucous layer, Explain the Submucous Layer This layer con...

Explain the Submucous Layer This layer consists of loose areolar connective tissue. There are lymph vessels, plexuses of blood vessels and nerves. The nerve plexus is meissner'

Procedure identification of compressed gases , PROCEDURE Locate the gas...

PROCEDURE Locate the gas cylinders available in the lab. Note the colour of the cylinder (to a maximum of two and exclude the LPG) and bands on it (if any) and record them i

Write Your Message!

Captcha
Free Assignment Quote

Assured A++ Grade

Get guaranteed satisfaction & time on delivery in every assignment order you paid with us! We ensure premium quality solution document along with free turntin report!

All rights reserved! Copyrights ©2019-2020 ExpertsMind IT Educational Pvt Ltd