| ASI-801 |
PLASTIC
LIMIT SET IS : 2720 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.
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| ASI-802 |
SHRINKAGE
LIMIT SET IS : 2720 (Part – VII) 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. Specification: 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.
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| ASI-803 |
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. |
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| ASI-804 |
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. |
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| ASI-805 |
LIQUID
LIMIT DEVICE 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.
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