Details
| Original language | English |
|---|---|
| Pages (from-to) | 112-118 |
| Number of pages | 7 |
| Journal | Soil and Tillage Research |
| Volume | 87 |
| Issue number | 1 |
| Publication status | Published - May 2006 |
Abstract
Measurement of the in situ cone penetration resistance (PR) is the only easily available and direct measurement of the actual in situ soil strength. Soil strength varies frequently due to changes in soil moisture conditions, which affects trafficability of soils quite unexpectedly. To generalize the information obtained from penetration resistance data, two of the authors [Hartge, K.H., Bachmann, J., 2004. In situ evaluation of the soil consolidation state by using penetration resistance data. J. Plant Nutr. Soil Sci. 167, 304-308] proposed a simple site specific analysis for the interpretation of the depth-dependent penetration resistance characteristics. In this paper, results of comparison of PR data with independently measured vane shear (VS) data were used to assure the plausibility of this approach for deeply developed non-layered soil. The focus of this paper is to prove the validity of the underlying basic assumption that the horizontal stress component begin to dominate the vertically measured penetration resistance and can further be used to characterize the intensity of agricultural landuse systems with respect to the compaction status of the soil. The procedure applied consists in assigning PR-values to the principal stress (σx) as a function of depth normalized by the PR-value of the greatest accessible depth, which is limited by the length of the probe. PR data were measured on three pasture sites after clearing the secondary virgin forest 12, 50 and 150 years ago. Results show that the duration of cattle grazing could significantly be detected by using either PR data or VS data. These results confirm the general feasibility of this simple experimental approach to evaluate the compaction state of soil from easy obtainable PR data.
Keywords
- Cone penetration resistance, Soil compaction, Stress at rest coefficient, Vane shear
ASJC Scopus subject areas
- Agricultural and Biological Sciences(all)
- Agronomy and Crop Science
- Agricultural and Biological Sciences(all)
- Soil Science
- Earth and Planetary Sciences(all)
- Earth-Surface Processes
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In: Soil and Tillage Research, Vol. 87, No. 1, 05.2006, p. 112-118.
Research output: Contribution to journal › Article › Research › peer review
}
TY - JOUR
T1 - Comparison of soil strength data obtained in situ with penetrometer and with vane shear test
AU - Bachmann, J.
AU - Contreras, K.
AU - Hartge, K. H.
AU - MacDonald, R.
N1 - Copyright: Copyright 2008 Elsevier B.V., All rights reserved.
PY - 2006/5
Y1 - 2006/5
N2 - Measurement of the in situ cone penetration resistance (PR) is the only easily available and direct measurement of the actual in situ soil strength. Soil strength varies frequently due to changes in soil moisture conditions, which affects trafficability of soils quite unexpectedly. To generalize the information obtained from penetration resistance data, two of the authors [Hartge, K.H., Bachmann, J., 2004. In situ evaluation of the soil consolidation state by using penetration resistance data. J. Plant Nutr. Soil Sci. 167, 304-308] proposed a simple site specific analysis for the interpretation of the depth-dependent penetration resistance characteristics. In this paper, results of comparison of PR data with independently measured vane shear (VS) data were used to assure the plausibility of this approach for deeply developed non-layered soil. The focus of this paper is to prove the validity of the underlying basic assumption that the horizontal stress component begin to dominate the vertically measured penetration resistance and can further be used to characterize the intensity of agricultural landuse systems with respect to the compaction status of the soil. The procedure applied consists in assigning PR-values to the principal stress (σx) as a function of depth normalized by the PR-value of the greatest accessible depth, which is limited by the length of the probe. PR data were measured on three pasture sites after clearing the secondary virgin forest 12, 50 and 150 years ago. Results show that the duration of cattle grazing could significantly be detected by using either PR data or VS data. These results confirm the general feasibility of this simple experimental approach to evaluate the compaction state of soil from easy obtainable PR data.
AB - Measurement of the in situ cone penetration resistance (PR) is the only easily available and direct measurement of the actual in situ soil strength. Soil strength varies frequently due to changes in soil moisture conditions, which affects trafficability of soils quite unexpectedly. To generalize the information obtained from penetration resistance data, two of the authors [Hartge, K.H., Bachmann, J., 2004. In situ evaluation of the soil consolidation state by using penetration resistance data. J. Plant Nutr. Soil Sci. 167, 304-308] proposed a simple site specific analysis for the interpretation of the depth-dependent penetration resistance characteristics. In this paper, results of comparison of PR data with independently measured vane shear (VS) data were used to assure the plausibility of this approach for deeply developed non-layered soil. The focus of this paper is to prove the validity of the underlying basic assumption that the horizontal stress component begin to dominate the vertically measured penetration resistance and can further be used to characterize the intensity of agricultural landuse systems with respect to the compaction status of the soil. The procedure applied consists in assigning PR-values to the principal stress (σx) as a function of depth normalized by the PR-value of the greatest accessible depth, which is limited by the length of the probe. PR data were measured on three pasture sites after clearing the secondary virgin forest 12, 50 and 150 years ago. Results show that the duration of cattle grazing could significantly be detected by using either PR data or VS data. These results confirm the general feasibility of this simple experimental approach to evaluate the compaction state of soil from easy obtainable PR data.
KW - Cone penetration resistance
KW - Soil compaction
KW - Stress at rest coefficient
KW - Vane shear
UR - http://www.scopus.com/inward/record.url?scp=32644469510&partnerID=8YFLogxK
U2 - 10.1016/j.still.2005.03.001
DO - 10.1016/j.still.2005.03.001
M3 - Article
AN - SCOPUS:32644469510
VL - 87
SP - 112
EP - 118
JO - Soil and Tillage Research
JF - Soil and Tillage Research
SN - 0167-1987
IS - 1
ER -