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The use of light weight deflectometer for in situ evaluation of sand degree of compaction
Joint Authors
al-Hakim, Amr F.
al-Baz, Khalid
Amir, Muhammad I.
Source
Housing and Building National Research Center Journal
Issue
Vol. 10, Issue 3 (31 Dec. 2014), pp.298-307, 10 p.
Publisher
Housing and Building National Research Center
Publication Date
2014-12-31
Country of Publication
Egypt
No. of Pages
10
Main Subjects
Topics
Abstract EN
The light weight deflectometer (LWD), also known as the light falling weight deflectometer, light drop weight tester, and dynamic plate load test, is a hand portable device that was developed in Germany to measure the soil in situ LWD dynamic modulus.
Typically, this modulus is used to evaluate the subsoil degree of compaction.
Thus it is suitable for compaction quality control of soil-surfaced roads, embankments and replacement fill.
As a dynamic test, the device is suited, in particular, for coarse and mixed grained soils with a maximum grain size of 63 mm.
The response of poorly graded calcareous and siliceous sands is the focus of this research.
First, the index soil properties of the tested soils including grain size distribution; maximum and minimum void ratios and specific gravity were obtained.
Petrographic analyses of the tested sands were also performed to determine their mineralogical composition.
A 1-m3 chamber was built for performing the LWD testing in the laboratory.
The study was performed for relative densities of 20 %, 40 %, 60 % and 80 % to represent the behavior of very loose, loose, medium dense and dense sands.
The effect of the existence of a rigid boundary beneath the tested soil on test results was also investigated to determine the zone of influence of the light weight deflectometer.
American Psychological Association (APA)
al-Hakim, Amr F.& al-Baz, Khalid& Amir, Muhammad I.. 2014. The use of light weight deflectometer for in situ evaluation of sand degree of compaction. Housing and Building National Research Center Journal،Vol. 10, no. 3, pp.298-307.
https://search.emarefa.net/detail/BIM-423966
Modern Language Association (MLA)
al-Hakim, Amr F.…[et al.]. The use of light weight deflectometer for in situ evaluation of sand degree of compaction. Housing and Building National Research Center Journal Vol. 10, no. 3 (2014), pp.298-307.
https://search.emarefa.net/detail/BIM-423966
American Medical Association (AMA)
al-Hakim, Amr F.& al-Baz, Khalid& Amir, Muhammad I.. The use of light weight deflectometer for in situ evaluation of sand degree of compaction. Housing and Building National Research Center Journal. 2014. Vol. 10, no. 3, pp.298-307.
https://search.emarefa.net/detail/BIM-423966
Data Type
Journal Articles
Language
English
Notes
Includes bibliographical references : p. 307
Record ID
BIM-423966