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Soil Suction

Nelson, John D. / Chao, Kuo Chieh (Geoff) / Overton, Daniel D. / Nelson, Erik J.

This chapter presents the concepts of soil suction and discusses the two components of suction: the matric suction and the osmotic suction. The soil water characteristic curve (SWCC) defines the relationship between water content and soil suction. The chapter also discusses the methods of measuring soil suction and techniques that can be used to estimate soil suction.The most commonly used methods for measuring soil suction include (1) tensiometers, (2) the axis translation technique, (3) filter paper, (4) thermal conductivity sensors, (5) electrical resistance sensors, (6) the pore fluid extraction technique, and (7) psychrometers. The chapter describes the measurement of matric suction, and also describes the measurement of osmotic and total suction. The measurement of total suction is based on the principle that the energy state of air is a function of its relative humidity, and the energy state of the soil water is the total suction.

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Soil Suction

Nelson, John D. / Chao, Kuo Chieh (Geoff) / Overton, Daniel D. / Nelson, Erik J.

This chapter presents the concepts of soil suction and discusses the two components of suction: the matric suction and the osmotic suction. The soil water characteristic curve (SWCC) defines the relationship between water content and soil suction. The chapter also discusses the methods of measuring soil suction and techniques that can be used to estimate soil suction.The most commonly used methods for measuring soil suction include (1) tensiometers, (2) the axis translation technique, (3) filter paper, (4) thermal conductivity sensors, (5) electrical resistance sensors, (6) the pore fluid extraction technique, and (7) psychrometers. The chapter describes the measurement of matric suction, and also describes the measurement of osmotic and total suction. The measurement of total suction is based on the principle that the energy state of air is a function of its relative humidity, and the energy state of the soil water is the total suction.

Soil Suction

Nelson, John D. / Chao, Kuo Chieh (Geoff) / Overton, Daniel D. / Nelson, Erik J.

This chapter presents the concepts of soil suction and discusses the two components of suction: the matric suction and the osmotic suction. The soil water characteristic curve (SWCC) defines the relationship between water content and soil suction. The chapter also discusses the methods of measuring soil suction and techniques that can be used to estimate soil suction.The most commonly used methods for measuring soil suction include (1) tensiometers, (2) the axis translation technique, (3) filter paper, (4) thermal conductivity sensors, (5) electrical resistance sensors, (6) the pore fluid extraction technique, and (7) psychrometers. The chapter describes the measurement of matric suction, and also describes the measurement of osmotic and total suction. The measurement of total suction is based on the principle that the energy state of air is a function of its relative humidity, and the energy state of the soil water is the total suction.

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Title:

Soil Suction

Contributors:

Nelson, John D. (author) / Chao, Kuo Chieh (Geoff) (author) / Overton, Daniel D. (author) / Nelson, Erik J. (author)

Published in:

Foundation Engineering for Expansive Soils ; 74-118

Publication date:

2015-02-17

Size:

45 pages

ISBN:

9781118996096 , 9780470581520

DOI:

https://doi.org/10.1002/9781118996096.ch4

Type of media:

Article/Chapter (Book)

Type of material:

Electronic Resource

Language:

English

Keywords:

osmotic suction , soil suction , tensiometers , matric suction , axis translation technique , psychrometers , thermal conductivity sensors

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