a TABLE OF CONTENTS - UNDP

y
Materials Frequency Relevant Standard
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Subgrade and/or
Embankment
A quality testing
procedure (laboratory)
for each subgrade
material or
embankment material
shall be carried
out for each 1500m3
of material as
ollows:-
(i)Granular Gradation
AASHTO T88
(ii)Atterberg Limits AASHTO T89
(Liquid and Plastic T90,
Limits), Linear BS 1377
shrinkage.
(iii)Compaction test
Modified Proctor with BS 1377 Part 4
compaction curve to or later
obtain optimum moist- revisions thereof.
ure content and max.
dry density.
(iv) C.B.R. at 95% of BS 1377 Part 4
modified Proctor
or later
density.
revisions thereof
After laying and
compaction a quality
testing procedure
on each 1000 m2 or
part thereof should
be carried out as
follows:-
(v) Field density AASHTO T 191
(vi) Moisture content ASTM D 2216
As directed by the
Engineer the following
tests may also
be carried out on
the material as
laid on site:-
(vii) Field C.B.R. ASTM D 4429
(with moisture content
determined by
weight from speedy
method).
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