Abstract
It is well known that suction is one of the stress state variables that control the behavior of soils and some porous materials. This paper presents a sensor based on Micro electromechanical systems (MEMS) technology that allows the detection of changes in relative humidity (RH) within the soil. By using thermodynamic concepts, the RH can be converted to total suction. The sensor delivers a quick response time, no hysteresis and it is not affected by temperature. The MEMS sensor exhibited a much faster response to changes in relative humidity (total suction) when compared with the non-contact filter paper technique. The MEMS sensor was also used to measure high total suction in two clayey soils and proved to improve the SWCC fit.
| Original language | English (US) |
|---|---|
| Title of host publication | Proceedings of the 17th International Conference on Soil Mechanics and Geotechnical Engineering: The Academia and Practice of Geotechnical Engineering |
| Pages | 1881-1884 |
| Number of pages | 4 |
| Volume | 3 |
| DOIs | |
| State | Published - 2009 |
| Event | 17th International Conference on Soil Mechanics and Geotechnical Engineering, ICSMGE 2009 - Alexandria, Egypt Duration: Oct 5 2009 → Oct 9 2009 |
Other
| Other | 17th International Conference on Soil Mechanics and Geotechnical Engineering, ICSMGE 2009 |
|---|---|
| Country | Egypt |
| City | Alexandria |
| Period | 10/5/09 → 10/9/09 |
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Keywords
- Arid regions
- MEMS
- Relative humidity
- Saturated salts
- Total suction
ASJC Scopus subject areas
- Geotechnical Engineering and Engineering Geology
Cite this
Using MEMS based RH sensor to measure high total suction. / Arab, M. G.; Zapata, Claudia; Marinho, F. A M.
Proceedings of the 17th International Conference on Soil Mechanics and Geotechnical Engineering: The Academia and Practice of Geotechnical Engineering. Vol. 3 2009. p. 1881-1884.Research output: Chapter in Book/Report/Conference proceeding › Conference contribution
}
TY - GEN
T1 - Using MEMS based RH sensor to measure high total suction
AU - Arab, M. G.
AU - Zapata, Claudia
AU - Marinho, F. A M
PY - 2009
Y1 - 2009
N2 - It is well known that suction is one of the stress state variables that control the behavior of soils and some porous materials. This paper presents a sensor based on Micro electromechanical systems (MEMS) technology that allows the detection of changes in relative humidity (RH) within the soil. By using thermodynamic concepts, the RH can be converted to total suction. The sensor delivers a quick response time, no hysteresis and it is not affected by temperature. The MEMS sensor exhibited a much faster response to changes in relative humidity (total suction) when compared with the non-contact filter paper technique. The MEMS sensor was also used to measure high total suction in two clayey soils and proved to improve the SWCC fit.
AB - It is well known that suction is one of the stress state variables that control the behavior of soils and some porous materials. This paper presents a sensor based on Micro electromechanical systems (MEMS) technology that allows the detection of changes in relative humidity (RH) within the soil. By using thermodynamic concepts, the RH can be converted to total suction. The sensor delivers a quick response time, no hysteresis and it is not affected by temperature. The MEMS sensor exhibited a much faster response to changes in relative humidity (total suction) when compared with the non-contact filter paper technique. The MEMS sensor was also used to measure high total suction in two clayey soils and proved to improve the SWCC fit.
KW - Arid regions
KW - MEMS
KW - Relative humidity
KW - Saturated salts
KW - Total suction
UR - http://www.scopus.com/inward/record.url?scp=84865184366&partnerID=8YFLogxK
UR - http://www.scopus.com/inward/citedby.url?scp=84865184366&partnerID=8YFLogxK
U2 - 10.3233/978-1-60750-031-5-1881
DO - 10.3233/978-1-60750-031-5-1881
M3 - Conference contribution
AN - SCOPUS:84865184366
SN - 9781607500315
VL - 3
SP - 1881
EP - 1884
BT - Proceedings of the 17th International Conference on Soil Mechanics and Geotechnical Engineering: The Academia and Practice of Geotechnical Engineering
ER -