Sand Cone or Volume Meter Test. Finally, calculate the dry density of the soil by given below formula. The apparatus volume correction is the weight of this material. endobj A portion of the sand released from the sand cone apparatus during the test remains in the cone. REMARKS 34. Subsequent to weighting, an example of soil is taken to decide its water content. Sand-Cone Method ASTM D1556 NEH 645 WS 8.9 In-Place Moisture-Density Determination: B–8.9–1 Rubber Baloon Method ASTM D2167 NEH 645 WS 8.10 In-Place Moisture-Density Determination: B–8.10–1 Calibrated Cylinder Method ASTM D-2937 NEH 645 WS 8.11 Nuclear Compaction Test Data —ASTM D6938 B–8.11–1. <> IN-PLACE DENSITY DETERMINATION - SAND-CONE METHOD 1. Now place the sand cone on the test hole with the help of the base plate and allow the sand to run by opening the control valve.5. <> To begin, a small hole is dug in the compacted soil. Weight of used sand… endobj The weight of the soil excavated from the hole i.e. Carefully place and centre the sand cone device over the test hole with the valve closed. The sand cone method is used for field density test in highway construction. Record the weight of the sand as SSD mass when the sand slumps to the nearest 0.1 g. Figure 4 Sand at SSD condition will slump once the cone is removed 5.
Dry density = Wet density × 100%/ Moisture content of soil + 100. Wet density of Soil in-situ = Mass of wet excavated soil(W4)/Volume of hole(V).. Dry density = Wet density x 100%/ Moisture content of soil + 100.. secured in the … Turn on the valve. Sand Cone Test: A Sand Cone Test is an inexpensive method of Soil Compaction Testing and is fairly accurate if conducted correctly. Place 5000 g of density sand into the storage hopper of the sand cone device. Dry density = Wet density × 100%/ Moisture content of soil + 100. The sand cone is set on the test hole with the assistance of the base plate and sand is permitted to keep running by opening the control value.At the point when the sand stop running, the valve is shut and the cone is weighted with the rest of the sand.
This correction value must be determined for each sand cone apparatus and is usually furnished by the Regional Geotechnical Engineer. material removed from test hole-lbs. 8 0 obj 5 0 obj CALCULATION. At that point, the dry density of soil can be measured and the present of otherwise of the compaction is a failure. <> Tamping sand using the cone method to determine SSD If on the first trial the sand slumps, moisture must be re-added and the drying process repeated. Collect the excavated soil from the hole and measure the weight.3. 7 0 obj After weighting, collect the specimen of soil to determine the water content in it.4. B–iv (210–VI–NEH, Amend. SAMPLE NUMBER 33. %PDF-1.6
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Compaction is The weight of empty sand cone is estimated and after that loaded with dry sand and weighted. 6 0 obj COMPUTED BY (Signature) 36. Compaction is done in the construction of embankment for increasing the stability as well as for decreasing the settlement.In field compaction, the compacting moisture content should be controlled first and the adequacy of rolling should be controlled by checking the achieved dry density and comparing with the maximum dry density.1. First, take the weight of the empty sand cone and then fill it with dry sand and then weight again.2. Calculation: The volume of the hole = Mass of sand in hole/Density of used sand. ������ɓϑw��a
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