Correlating Standard Penetration Test and Dynamic Probe Super Heavy penetration resistance values in sandy soils
This paper presents a statistical method used to develop an empirical equivalence between the Standard Penetration Test (SPT) and the Dynamic Probe Super Heavy (DPSH) in sandy material. Penetration resistance values from the two tests are often taken as equivalent for design purposes, as the same dr...
| Main Authors: | , , |
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| Format: | Article |
| Language: | English |
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South African Institution of Civil Engineering
2011-04-01
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| Series: | Journal of the South African Institution of Civil Engineers |
| Subjects: | |
| Online Access: | http://www.scielo.org.za/scielo.php?script=sci_arttext&pid=S1021-20192011000100006 |
| _version_ | 1797764211057623040 |
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| author | C MacRobert D Kalumba P Beales |
| author_facet | C MacRobert D Kalumba P Beales |
| author_sort | C MacRobert |
| collection | DOAJ |
| description | This paper presents a statistical method used to develop an empirical equivalence between the Standard Penetration Test (SPT) and the Dynamic Probe Super Heavy (DPSH) in sandy material. Penetration resistance values from the two tests are often taken as equivalent for design purposes, as the same drive energy is used in both. SPT and DPSH resistance values from different geological depositional and weathering environments were examined. The data came from the following areas across southern Africa: Matola in Mozambique, Gope in Botswana, Umdloti and Cape Town in South Africa, and Illha de Luanda in Angola. It was apparent that energy losses were greater in the DPSH test than in the SPT, leading to higher resistance values in the former. The SPT is carried out within a borehole, whereas the DPSH is continuously driven into the soil. The dynamic force applied to the DPSH rods causes soil to fill the small air annulus around the rods, exerting a frictional resistance. The different geological settings of the test sites revealed that, although different factors cause the friction, the equivalence varied in a similar manner. Hence a single correlation formula is suggested to determine equivalent SPT values from raw DPSH resistance values. |
| first_indexed | 2024-03-12T19:52:25Z |
| format | Article |
| id | doaj.art-dbe58ade91784e589dc79eff6979fba0 |
| institution | Directory Open Access Journal |
| issn | 1021-2019 |
| language | English |
| last_indexed | 2024-03-12T19:52:25Z |
| publishDate | 2011-04-01 |
| publisher | South African Institution of Civil Engineering |
| record_format | Article |
| series | Journal of the South African Institution of Civil Engineers |
| spelling | doaj.art-dbe58ade91784e589dc79eff6979fba02023-08-02T03:05:24ZengSouth African Institution of Civil EngineeringJournal of the South African Institution of Civil Engineers1021-20192011-04-015314654Correlating Standard Penetration Test and Dynamic Probe Super Heavy penetration resistance values in sandy soilsC MacRobertD KalumbaP BealesThis paper presents a statistical method used to develop an empirical equivalence between the Standard Penetration Test (SPT) and the Dynamic Probe Super Heavy (DPSH) in sandy material. Penetration resistance values from the two tests are often taken as equivalent for design purposes, as the same drive energy is used in both. SPT and DPSH resistance values from different geological depositional and weathering environments were examined. The data came from the following areas across southern Africa: Matola in Mozambique, Gope in Botswana, Umdloti and Cape Town in South Africa, and Illha de Luanda in Angola. It was apparent that energy losses were greater in the DPSH test than in the SPT, leading to higher resistance values in the former. The SPT is carried out within a borehole, whereas the DPSH is continuously driven into the soil. The dynamic force applied to the DPSH rods causes soil to fill the small air annulus around the rods, exerting a frictional resistance. The different geological settings of the test sites revealed that, although different factors cause the friction, the equivalence varied in a similar manner. Hence a single correlation formula is suggested to determine equivalent SPT values from raw DPSH resistance values.http://www.scielo.org.za/scielo.php?script=sci_arttext&pid=S1021-20192011000100006Standard Penetration Test (SPT)Dynamic Probe Super Heavy (DPSH)Empirical EquivalenceGeotechnical Site InvestigationsDynamic Penetration Testing |
| spellingShingle | C MacRobert D Kalumba P Beales Correlating Standard Penetration Test and Dynamic Probe Super Heavy penetration resistance values in sandy soils Journal of the South African Institution of Civil Engineers Standard Penetration Test (SPT) Dynamic Probe Super Heavy (DPSH) Empirical Equivalence Geotechnical Site Investigations Dynamic Penetration Testing |
| title | Correlating Standard Penetration Test and Dynamic Probe Super Heavy penetration resistance values in sandy soils |
| title_full | Correlating Standard Penetration Test and Dynamic Probe Super Heavy penetration resistance values in sandy soils |
| title_fullStr | Correlating Standard Penetration Test and Dynamic Probe Super Heavy penetration resistance values in sandy soils |
| title_full_unstemmed | Correlating Standard Penetration Test and Dynamic Probe Super Heavy penetration resistance values in sandy soils |
| title_short | Correlating Standard Penetration Test and Dynamic Probe Super Heavy penetration resistance values in sandy soils |
| title_sort | correlating standard penetration test and dynamic probe super heavy penetration resistance values in sandy soils |
| topic | Standard Penetration Test (SPT) Dynamic Probe Super Heavy (DPSH) Empirical Equivalence Geotechnical Site Investigations Dynamic Penetration Testing |
| url | http://www.scielo.org.za/scielo.php?script=sci_arttext&pid=S1021-20192011000100006 |
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