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Sand 1

The document outlines the procedure for determining the field density of Granular Sub Base (GSB) using the sand replacement method. It includes details on calibration, weight measurements, and calculations for bulk density, moisture content, and compaction percentage. A conformance report will be issued based on the results compared to prescribed limits.

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6 views1 page

Sand 1

The document outlines the procedure for determining the field density of Granular Sub Base (GSB) using the sand replacement method. It includes details on calibration, weight measurements, and calculations for bulk density, moisture content, and compaction percentage. A conformance report will be issued based on the results compared to prescribed limits.

Uploaded by

vibce22
Copyright
© © All Rights Reserved
We take content rights seriously. If you suspect this is your content, claim it here.
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Download as PDF, TXT or read online on Scribd
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ii.

Field Density of GSB ( Sand replacement method)

Road/Package Details : Date of Testing :

Sample Details ( Location/Chainage/Source Thickness of layer :


etc. ):

Observation

Calibration Quantity
i. Mean weight of sand in cone(of pouring
cylinder)(W2) in gm
ii. Volume of calibrating cylinder (V) in cc
iii. Weight of sand (+cylinder) before pouring
(a) (W1) in gm
iv. Mean weight of sand(+cylinder) after
pouring(W3) in gm
v. Weight of sand to fill calibrating cylinder
( Wa=W1-W2-W3) in gm
vi. Bulk density of sand Ys= (Wa/V) gm/cc
Determination of soil density
i. Weight of wet soil from hole (Ww) in gm
vii. Weight of sand (+cylinder) before pouring
(W1) in gm
viii. Mean weight of sand(+cylinder) after
pouring(W4) in gm
ix. Weight of sand in hole, Wb=(W1-W4-W2) in
(b)
gm
v. Bulk Density Yb= (Ww/Wb)*Ys, gm/cc
vi Moisture content (W) percent
vii. Weight of dry soil from the hole
viii Dry density , gm/cc
ix Proctor density(gm/cc)
x % Compaction

Whether conform to prescribed limit


Layer Value Permissible limit
(Yes/No)

-conformance Report will be issued by the PIU .The


reference of the Page No. of this register on which Non-conformance Reports copy preserved.

* Field density as per cent of Maximum Dry Density at OMC.

Checked by: Tested by

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