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Soil Testing

JMT - 601
PLASTIC LIMIT SET IS : 2720
(Part – VII)
ASTM D 427, BS : 1377 AASHO 190.
Moisture contents at which soil as smallest plasticity is called limit. For determination purpose plastic limit is defied as the water content at which a soil will just begin to crumble when rolled into a thread of 3mm. dia.
Specifications:The complete set consists of one each: -
Glass plate 20cm x 115cm having ground ends and one side frosted.
Brass or stainless steel rod 3 mm dia x 150mm long.
1. Flexible spatula.
2. Set of 6 moisture containers.
3. Porcelaine basin 150mm dia.
4. Plastic wash bottle 500 ml..

JMT - 602
SHRINKAGE LIMIT SET IS : 2720 (Part – VII)
ASTM D 427, BS : 1377, AASHO T 92.
Shrinkage limit is the maximum water content at which a reduction in water content does not cause an appreciable reduction in volume of the soil mass. At shrinkage limit, on further reduction in water, air enters into the voids of soils and thus keeps the volume constant. The apparatus can be used to determine shrinkage limit and to calculate other shrinkage factors like shrinkage ratio, shrinkage index and volumetric shrinkage.
Specifications :Set consists of one each: -
1.Porcelain evaporating Dish
2. Shrinkage Dish
3. Glass cup
4. Perspex plate with three metal prongs
5. Perspex plate.
6.Flexible spatula
7. Glass cylinder 25ml x 0.5 ml. supplied without mercury.
Optional accessories: Mercury supplied in bottle of 500 gms..

JMT - 603
CONE PENETROMETER IS :2720 (Part V)
For determining the Liquid Limit of soils. This is specially useful to obtain reliable and accurate results for those soils which have low plasticity index. The percentage moisture contents determined when cone with half angle of 15-30 minutes under a total sliding weight of 148 gm penetrates 25 mm gives the Liquid Limit.





JMT - 604
HIGH SPEED STIRRER IS : (Part IV).
This is for mechanical analysis and also other laboratory applications for stirring. Speed approximately 4000 rpm under load. A dispersion cup is supported on a rest on the stand of the stirrer and has a removable baffle. For operation on 230-250 volts A.C. supplied without dispersion cup or baffle.




JMT - 605
LIQUID LIMIT DEVICE
IS : 2720(Part V), IS : 9259,BS : 1377, AS : 89.
Casagrande method is mechanical form is known as Liquid Limit method and has been in use for still mechanics for a number of years. The liquid limit data of soils is useful to correlate mechanical properties of soil, such as compressibility and lower shear strength. Liquid limit is the water content at which soil passes from zero strength to an infinitesimal strength, hence the true value of liquid limit cannot be determined. For determination purpose liquid limit is that water content at which part of soil, cut by a groove of standard dimensions, will flow together for a distance of 1.25cm under an impact of 25 blows in a standard liquid limit apparatus. The soil at the water content has some strength, which is about 0.17N/cm.sq. (17gms/sq.cm.) At this water content soil just passes from liquid state to plastic state.Specifications:
It consists os a brass cup held on an adjustable bracket. The cup can be adjusted for a fall of 1 cm and can be raised and dropped on a rubber base of standard hardness by cam action. Complete with one casagrande grooving tool, one ASTM Grooving tool and a high gauge block (Type A of IS 9259).

JMT - 606
LIQUID LIMIT DEVICE (WITH COUNTER)
Same as above but fitted with a counter to register the umber of blows.






JMT - 607
LIQUID LIMIT DEVICE (MOTORISED)
Same as above but fitted with a motor geared down to give approximately 120r.p.m. suitable for operation on 230 volts, single phase, 50 cycles, A.C. supply.
Spares: Casagrande grooving tool. ASTM Grooving tool, Height block, 1cm high.





JMT - 608
GRAIN SIZE ANALYSIS (PIPETTE METHOD)
IS: 2720(part - IV) and BS : 1377.
This is for the determination of there sub sieve particle distribution in a soil sample by mechanical analysis. An analysis of this kind expresses quantitatively 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 flectuation.
Specifications :
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 Aderson pipette 10ml. at the side capacity made from glass, and a sedimentation tube also of glass of 500 ml capacity and 50 Nos. Test forms.

JMT - 609
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 75 microns, 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.Specifications :
A vertical rod is mounted on a sturdy base having leveling screws. A pointer with steel pivots turns in jewel bearing and moves over a graduated scale. Scale graduations are made 0-100% x 2%.
To the ogher end of the pointer a plummet is hanged. Rack and pinion arrangement is provided on the vertical rod for adjusting the height. Supplied with a chart showing relationship between "K" and temperature of suspension of soils of varing specific gravity from 2.4 to 2.8 to help in solving stroke’s equation. Supplied complete with one Perspex plummet one measuring jar and one rider weight for zero adjustment and one rider weight for adjusting the pointer to 100%..

JMT - 610
MARSH CONE
This cone is used to find out Viscosity of Bentinite slurry and like material. The Marsh Cone is 6 inch in diameter at the top and 12inch ling, and tapers to join a tube 2 inch long and 3/16 inch inside dia. The capacity of the funnel is 1500 cc.. Time in seconds required to flow out 1000cc of slurry from cone is measured as funnel viscosity of the material.



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