In-situ ground surveying by the NSWS testing machine

Shinya Inazumi, Kenji Kazarashi

Research output: Contribution to journalArticle

3 Citations (Scopus)

Abstract

This paper outlines the development of the NSWS (Nippon Screw Weight System) testing machine. In compliance with the Swedish sounding (SWS) test that determines loading and rotational penetration resistance. The NSWS was developed as an in-situ ground surveying device to detect super soft zones in the ground, including hollows and loosening, in detail, by allowing operation in the 0 to 2500N load range, with very close measurements intervals and penetration speed control, the features of which cannot be achieved by the SWS testing machine. Additionally, findings from an in-situ surveying of in-ground hollows identified using the NSWS testing machine are reported in this paper. The machine achieved a conversion N-value measuring intervals of 2.5cm (or 3.8cm), determination of ranges of hollow and loosening zones through pre-setting of penetration speed, and detection of super soft zones of conversion N-values 1 and below with a load range of 0 to 1000N.

Original languageEnglish
Pages (from-to)1-9
Number of pages9
JournalInternational Journal of GEOMATE
Volume1
Issue number1
Publication statusPublished - 2011
Externally publishedYes

Fingerprint

Surveying
screws
surveying
penetration
Testing
testing
Speed control
compliance
resistance to penetration
in situ
speed

Keywords

  • Conversion N-values
  • In-ground hollow
  • In-ground loosening zone
  • NSWS testing machine

ASJC Scopus subject areas

  • Soil Science
  • Geotechnical Engineering and Engineering Geology
  • Building and Construction
  • Environmental Engineering

Cite this

In-situ ground surveying by the NSWS testing machine. / Inazumi, Shinya; Kazarashi, Kenji.

In: International Journal of GEOMATE, Vol. 1, No. 1, 2011, p. 1-9.

Research output: Contribution to journalArticle

@article{ea2f643edfb548c7ae285c5a53c5f37c,
title = "In-situ ground surveying by the NSWS testing machine",
abstract = "This paper outlines the development of the NSWS (Nippon Screw Weight System) testing machine. In compliance with the Swedish sounding (SWS) test that determines loading and rotational penetration resistance. The NSWS was developed as an in-situ ground surveying device to detect super soft zones in the ground, including hollows and loosening, in detail, by allowing operation in the 0 to 2500N load range, with very close measurements intervals and penetration speed control, the features of which cannot be achieved by the SWS testing machine. Additionally, findings from an in-situ surveying of in-ground hollows identified using the NSWS testing machine are reported in this paper. The machine achieved a conversion N-value measuring intervals of 2.5cm (or 3.8cm), determination of ranges of hollow and loosening zones through pre-setting of penetration speed, and detection of super soft zones of conversion N-values 1 and below with a load range of 0 to 1000N.",
keywords = "Conversion N-values, In-ground hollow, In-ground loosening zone, NSWS testing machine",
author = "Shinya Inazumi and Kenji Kazarashi",
year = "2011",
language = "English",
volume = "1",
pages = "1--9",
journal = "International Journal of GEOMATE",
issn = "2186-2982",
publisher = "GEOMATE International Society",
number = "1",

}

TY - JOUR

T1 - In-situ ground surveying by the NSWS testing machine

AU - Inazumi, Shinya

AU - Kazarashi, Kenji

PY - 2011

Y1 - 2011

N2 - This paper outlines the development of the NSWS (Nippon Screw Weight System) testing machine. In compliance with the Swedish sounding (SWS) test that determines loading and rotational penetration resistance. The NSWS was developed as an in-situ ground surveying device to detect super soft zones in the ground, including hollows and loosening, in detail, by allowing operation in the 0 to 2500N load range, with very close measurements intervals and penetration speed control, the features of which cannot be achieved by the SWS testing machine. Additionally, findings from an in-situ surveying of in-ground hollows identified using the NSWS testing machine are reported in this paper. The machine achieved a conversion N-value measuring intervals of 2.5cm (or 3.8cm), determination of ranges of hollow and loosening zones through pre-setting of penetration speed, and detection of super soft zones of conversion N-values 1 and below with a load range of 0 to 1000N.

AB - This paper outlines the development of the NSWS (Nippon Screw Weight System) testing machine. In compliance with the Swedish sounding (SWS) test that determines loading and rotational penetration resistance. The NSWS was developed as an in-situ ground surveying device to detect super soft zones in the ground, including hollows and loosening, in detail, by allowing operation in the 0 to 2500N load range, with very close measurements intervals and penetration speed control, the features of which cannot be achieved by the SWS testing machine. Additionally, findings from an in-situ surveying of in-ground hollows identified using the NSWS testing machine are reported in this paper. The machine achieved a conversion N-value measuring intervals of 2.5cm (or 3.8cm), determination of ranges of hollow and loosening zones through pre-setting of penetration speed, and detection of super soft zones of conversion N-values 1 and below with a load range of 0 to 1000N.

KW - Conversion N-values

KW - In-ground hollow

KW - In-ground loosening zone

KW - NSWS testing machine

UR - http://www.scopus.com/inward/record.url?scp=84905679939&partnerID=8YFLogxK

UR - http://www.scopus.com/inward/citedby.url?scp=84905679939&partnerID=8YFLogxK

M3 - Article

VL - 1

SP - 1

EP - 9

JO - International Journal of GEOMATE

JF - International Journal of GEOMATE

SN - 2186-2982

IS - 1

ER -