A STUDY OF THE RAPID METHOD OF EARTHWORK CONSTRUCTION CONTROL
A STUDY OF THE RAPID METHOD OF EARTHWORK CONSTRUCTION CONTROL
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Date
1991-05
Authors
KWOFIE, JOHN ISAAC
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Abstract
In earthwork construction the parameter used to check
the effectiveness of compaction is the Relative Compaction, a
parameter which cannot be evaluated until field density tests
and laboratory compaction tests on representative portions of
the material have been performed. The Standard Method of
arriving at this value of Relative Compaction is time -
consuming because the Standard Method of performing the
laboratory compaction test (to obtain the Optimum Moisture
Content, OMC, and Maximum Dry Density, MDD) requires
airdrying, ovendrying to determine moisture contents, and
five points to plot a compaction curve- The overall effect
is that the OMC and MDD will not be known until the
following day. This is a shortcoming in earthwork
construction where time is, indeed, money. The Rapid Method
can give accurate values of OMC and MDD about an hour after
digging a density hole, and hence a much faster means of
assessing the effectiveness of compaction.
The object of this research has been to check the
accuracy of the OMC and MDD values determined by the Rapid
Method. Thirty five soil samples were used, and statistical
analysis carried out on the results of the OMC and MDD
obtained using the two methods on each sample, indicated that
the Rapid Method is not only faster, but as accurate as the
Standard Method.
Description
A thesis submitted to the Postgraduate School, Ahmadu Bello
University, Zaria, Nigeria, in partial fulfillment of the
requirements for the award of Master of Science degree in
Civil Engineering Construction Materials.
Civil Engineering Department,
Ahmadu Bello University,
Zaria, Nigeria.
Keywords
STUDY,, RAPID,, EARTHWORK,, CONSTRUCTION,, CONTROL