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Soil Testing Equipments

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Grain Size Analysis
High Speed Stirrer
IS 2720 (PART IV)
Specification :
This is for mechanical analysis and also other laboratory applications for stirring Speed approximately 4000 R.P.M. under load. A dispersion cup is supported on a rest on the stand of the stirrer and has a removable baffle. For operation on 230V A.C. supplied with dispersion cup or baffle cup.
Grain Size Analysis (Pipette Method)
IS 2720 (PART IV) AND BS 1377:2.
This is for the determination of the sub sieve particle distribution in a soil sample by mechanical analysis. An analysis of this kind expresses quantity the proportions by weight of the various sizes of particles present in the soil. It is recommended as a standard procedure to use dispersion agent to avoid flocculation.

The apparatus consists of a sliding panel which moves up and down by means of a screw allowing Anderson pipette fixed to it to be raised or lowered vertically. A sedimentation tube is held by a laboratory clamp provided on the stand below the pipette. The depth of immersion is measured by a scale graduated in mm at the side of the sliding panel. Supplied complete with Anderson pipette 10ml. At the side capacity made from glass, and a sedimentation tube also of glass of 500ml capacity and 50nos.
Particle Size Sedimentation (Hydrometer Method)
ASTM D 422 AASHTO T 88, BS 1377-2.
Particle size analysis of soils:
Hydrometer method
This equipment is used to determine the quantitative size distribution of very fine particle in soils such as clay and silt.
The complete set comprises:
  •  Sedimentation Cylinder, 1000 ml capacity (6 pieces) with rubber bungs.
  •  Soil Hydrometer, 151H, range 0.995 to 1.038 g/ml with div. 0.001
  •  Glass Tank, dimensions: 600x300x380 mm
  •  Heater complete with thermostat, circulation unit. 230V Single Phase 50Hz 1000W
  •  Glass Thermometer, range -10 to 50o C., Sub-div. 0.5o C.
  •  Beaker, Borosilicate Glass, 250 ml capacity
  •  Sodium Hexametaphosphate, 1000 g
Soil Hydrometer
IS 2720 (PART-VI),BS 1377-2
Used for grain size analysis of soils where more than 10% of the material will pass through 75 microns B.S. sieve. Manufactured from clear transparent glass having uniform clarity throughout the upper end on which density scale is engraved. The scale range is 0.995 to 1.030 density (gms./cc) at 270C smallest division on the scale is 0.0005.

Note: Hydrometer for other liquids also available.
Sand Equivalent Test Set
ASTM D 2419, AASHTO T 176
Used to determine the relevant proportions of clay-like or Plastic fines and dust in granular soils & fine aggregate Consists of:
  •  Acrylic graduated cylinder (4 nos.)
  •  Rubber stopper for cylinder (4 nos.)
  •  Graduated Steel rule 450 mm
  •  Funnel 100 mm plastic
  •  Aspirator bottle 5 lts plastic with rubber cock
  •  Stand for the aspirator bottle with siphon assembly
  •  Irrgation tube with stop pinch cock & weighted foot assembly
Methylene Blue Test Set
EN 933-9; NF P94-068; UNE 83 180; UNI 8520-15
The test set is used for determining the methylene blue value of 0/2 mm/ fraction in fine aggregates.
A Methylene Blue Test Set, 210-240 V 50-60 HZ
B 1 Filter Paper For Methylene Blue Test ø:125 mm, 100 Pcs./Pack
Set consists of
  •  High speed agitator motor, 400/600 r.p.m.
  •  Stirring propeller, ø70 mm 4 flanks
  •  Glass burette, 50 ml x 0.1 ml
  •  Burette holder and stand
  •  Filter paper, 1 pack (100 pcs.), 125 mm dia, 95 g/m2,0.20 mm thickness
  •  Glass rod, ø8x300 mm
  •  Plastic beaker, 1000 ml
  •  Methylene blue, 100 g
  •  Kaolinite, 500 g
Motorised Sand Equivalent Shaker
ASTM D2419, AASHTO T 176
  •  Stroke Travel (EN) 200 mm ± 1 mm
  •  Stroke Travel (ASTM) 203.2 mm ± 1.02 mm
  •  Rate (EN)180mm ± 2/min
  •  Rate (ASTM)175 mm ± 2/min
  •  Dimensions mm (wxlxh) 240 x 800 x 340
  •  Weight Kg 27.5
Plummet Balance
Conventionally particle size distribution analysis is carried out using pipette and hydrometer methods. Whereas in hydrometer method it is possible to determine particle sizes in the range 75microns, the method involves computation and it is time consuming. The pipette method can be used for determining only the percentage of specific sizes less than 0.02, 0.006 and 0.002mm as a percentage of total soil sample.

The plummet balance method to determine sub sieve particle size for the entire range is very rapid and only manipulation of height of the balance, so that plummet sinks to the right depth is required.

The percentage of soil in suspension is directly indicated by a pointer over a graduated scale. A vertical rod is mounted on a sturdy base having leveling screws. A pointer with steel pivots turns is jewel bearing an moves over a graduated scale. Scale graduations are market 0-100% x 2%
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