Evaluation of Soil Profile and Allowable Bearing Capacity of Soil Using Kunzenstap Penetration Test, KPT

Main Article Content

thitibhorn phantachang

Abstract

This study examines the variablity of Kunzelstab Penetration Test (KPT) results from site investigation on a fill slope soil from gap graded gravel with high plasticity silt. The principal uses of the KPT are examined surch as corretion method for N¢KPT, soil profile and allowable bearing capacity of soil foundation.  KPT tests were conducted at 13 boreholes, each measuring 4 m long. Soil profile and allowable bearing capacity (Qa) along the holes were done using NKPT data. The number of blow count from KPT has been collected (N¢KPT) to obtain allowable bearing capacity. The result indicates the uncompacted layer and located the firm layer of soil foundation. The average allowable bearing capacity were 1.53 t/m2 and 17.06 t/m2 respectively. The study demonstrates the usefulness of the KPT method in geotechnical investigations, which is efficient, economic and less time consuming in comparison to the other geotechnical site investigation methods.

Article Details

How to Cite
[1]
thitibhorn phantachang, “Evaluation of Soil Profile and Allowable Bearing Capacity of Soil Using Kunzenstap Penetration Test, KPT”, RMUTP Sci J, vol. 12, no. 2, pp. 60–72, Dec. 2018.
Section
บทความวิจัย (Research Articles)

References

[1] EGAT, “Soil Exploration by Kunzelstab Penetration Test” Elec-tricity Generating Authority of Thailand (EGAT), 1980.
[2] A. Sakmanee, K. Chantawarangul, “Soil Exploration by Dynamic Light Penetrometer”, in Proceedings of 41st Kasetsart University Annual Conference, Bangkok, Thailand, 2003, pp 490-497.
[3] C. Karerat, “Bearing Capacity Investigation of Silty Sandy Soil Layer Using Kunzelstab Test”, Journal of Applied Engineering Sciences, Vol. 16(19), pp.57-61. 2016.
[4] W. Kongkitkul, S. Srisakorn, T. Chantachot, S. Youwai, P. Jongpradist, and C. Bunjongruksa, “Evaluation of Guy Anchorage Strength in Clay for Transmission Tower,” Journal of Testing and Evaluation, Vol. 41, No. 4, pp. 564–570. 2
[5] G.G. Meyerhof, 1956. “Penetration tests and bearing capacity of cohesionless soils,” Journal of the Soil Mechanics and Foundations Division, ASCE," Vol. 82(1): pp.1–19.