Soil Testing- Geotech Lab Equipment

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MOTORISED TRIAXIAL SHEAR TEST APPARATUS (SINGLE SPEED):

• AS PER IS: 2720 (Part - XII)

Introduction:

• Total stresses when measured in a Triaxial cell are more complex in their nature.
• Numerous parameters may be measured including back, pressure, Pore water pressure and volume change.
• From these values various engineering properties can be calculated. Triaxial cell is used to apply total stress.
• The sample is subjected to an around confining pressure. Load is then applied through piston of Triaxial cell on a pressure pad on the top of the specimen.
• In a Triaxial cell, sample is confined in a rubber membrane. Triaxial Cells are manufactured from carefully selected material.
• he cells are manufactured to accommodate different sizes of specimen.
• Universal Triaxial Cell accommodates samples of diameters 38 mm to 100 mm.
• It is used to determine shear strength parameters i.e. angle of shearing resistance and cohesion of a given soil sample.

APPLICATION:

• In deep foundations, confining pressures play the significant role in changing the behavior soils.
• Similarly in high rise earth dams, the confining pressures are of very high magnitude.
• Triaxial test is only test to simulate these confining pressures.
• For short terms stability of foundations, dams and slopes, shear strength parameters for unconsolidated undrained or consolidated undrained conditions are used, while for long term stability shear parameters corresponding to consolidated drained conditions will give more reliable results.
• All such special conditions can be achieved in Triaxial tests.

General Description and Specifications: It Consists of followings:

• Load Frame: Hand operated load frame capacity 5000 kgs, having Single speed of strain 1.25 mm/min screw jack type, mounted on a rigid frame.
• operation on 220/230 Volts, single phase A.C. Supply
• Triaxial Cell: Stationary bush type suitable to accommodate soil specimen of 38 mm diam x 76 mm long, in perpex chamber, suitable to with stand fluid pressure of 10 kg/cm sq, with no volume change type klinger valve at base.
• Lateral Pressure Assembly: Pressure chamber with foot pump. Complete with pressure gauge 0-10 kg/cm sq, shredder valve, foot pump and rubber hose pipe to connect with Triaxial cell.
• Proving Ring: High sensitive proving ring capacity 250 kgs made of special alloy steel to give maximum repeatability as stipulated in I.S. 4169 fitted with dial gauge least count 0.002 mm is Supplied.
• Dial Gauge : For strain measurement 0.01 mm x 25 mm travel
• Complete with 12 nos rubber membranes, 4 nos sealing ring, mould for preparation of sample, sheath stretcher, pair of porous stone, pair of plain disc, loading pad and drainage tube

Also Available:

MOTORISED TRIAXIAL SHEAR TEST APPARATUS (SIX SPEED)

UNIVERSAL TRIAXIAL SHEAR APPARATUS- MOTORISED (SIX SPEED)

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MOTORISZD UNCONFINED COMPRESSION TESTER PROVING RING TYPE

• AS PER IS 2720 (Part X), ASTM T - 208.

Introduction

• Many a times it is essential to know unconfined compressive strength of soils saturated or nearly saturated.
• These results give an idea of the bearing capacities.
• Unconfined samples are uni-directionally loaded gradually till failure in this test.
• This is an Electrically operated (Motorized) instrument for determining the unconfined compression strength of soil specimens of diameter ranging from 38 mm to 100 mm.
• Load on the sample is applied gradually by an Electrically operated load frame and loads are measured on a sensitive proving ring attached to the load frame.
• In this choice of three constant rates of stain.

General Description andSpecifications Is consists of

• Screw operated load frame, bench type, capacity 5000 kgf (50KN) with a gear box and motor drive giving 1.25, 1.5, 2.5 mm/min rates of strain, a pair of cone seating, adaptor for proving ring and stain dial gauge bracket.
• Supplied with one pair of male/ female coning tools for 38 mm dia samples but without proving ring and dial gauge.
• Suitable for operation on 230 volts, single phase A.C. Supply.

Accessories

• Coning tools in pairs (male & female) for samples having diameter 38 mm, 50 mm, 75 mm & 100 mm

OPTIONAL

• Motorized unconfined compression tester proving ring type same as above but having only one rate of strain 1.25 mm/min.
• Motorized unconfined compression tester proving ring type this is similar to above but with the following rates of strains 1.5 mm/min, 2.0 mm/min and 3.0 mm/min

Additional Information:

• Pay Mode Terms: T/T (Bank Transfer)
• Port of Dispatch: Nhava Sheva
• Production Capacity: 50
• Delivery Time: 1-2 Weeks

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• AS PER IS: 2720(Part XBI)-1966

• In soil machines Permeability is one of the important Engineering properties, as it governs rate of settelment of saturated compressible soil layer & rate of flow of equifer.
• Permeability is that property of soil which permits flow of water through its interconnecting voids.
• The instrument to measure permeability is called permeameter.
• The results are used for pumping ground water, for foundation sites excavations, design of dams etc.
• Tests can be performed on remoulded or undistubed samples using Constant Head or falling Head method.
• The apparatus is used for the laboratory determination of permeability of soils using s constant or a variable head.
• This test is recommended for soils with coefficient os permeability in the range of 10-3 to 10-7 cm/sec.
• The maximum particle size of the soil which can be tested in the mould is 10mm.

• Gun metal mould: 100m mm dia x 127.3mm height x 1000 ml volume
• Gunmetal mould extenson color: 100mm dia x 60mm height
• Gunmetal Drainage base plate ith a recess for poros stone & with an outlet valve
• Metallic clamping ring
• Drainage Cap( top plate with a recess for poros stone & fitted with an inlet valve & air release valve)
• Gunmetal Dummy plate to serve as a false bottom during compaction
• set of poros stone for base & top plate
• Set of three glass stand pipes approx 6mm, 10mm & 20mm dia mounted on a wodden base stand.
• each glass tube is longer than 1 m & has a serrated end at the bottom
• To read water head(2 nos) , meter scales are fixed between the tubes.
• Rubber tube with pinch cock is provided.

• Over head tank, made of G.I. sheet with six outlets at the bottom & inlet port on top
• Rammer: 2.6 kg x 310mm controlled fall.

• Universal or Combination Permeameter is also available

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Features:

• Rugged design

• Require less maintenance

• Unmatched quality

SHRINKAGE LIMIT SET:

• AS PER IS: 2720 (Part - Vll) ASTM D 427, BS: 1377, AASHO T 92.

Introduction:

• 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.

General Description and Specifications:

 Set consists of one each:-

• Porcelain evaporating Dish
• Shrinkage Dish
• Glass Cup
• Perspex Plate with three metal prongs
• Perspex plate,
• Flexible spatula
• Glass cylinder 25 ml x 0.5 ml, supplied without mercury.

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Our firm specializes in offering an excellent collection of Liquid Limit Device. This device is manufactured using topmost grade raw-material and sophisticated technology in conformity with the certified industry norms. In order to deliver the defect free range at clients' end, this device is checked against the various parameters of quality before supply set by industry. We offer this device at most affordable rate.

Features:

• High functionality

• Smooth performance

• Industry approved design

LIQUID LIMIT DEVICE:

• AS PER IS: 2720 (Part V), 9259, BS: 1377, AS: 89.

Introduction:

• Casagrande method in mechanical form is known as Liquid Limit Method and has been in use for soil 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 a part of soil, cut by a groove of standard dimensions, will flow together for a distance of 1.25 cm under an impact of 25 blows in a standard liquid limit apparatus.
• The soil at the water content has some strength which is about 0.17 N/cm. sq. (17gms/sq.cm.)
• At this water content soil just passes from liquid state to plastic state.

General Description and Specifications:

 LIQUID LIMIT DEVICE (HAND OPERATED):

• It consists of 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).

LIQUID LIMIT DEVICE (WITH COUNTER):

• It consists of 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) Fitted with a counter to register the number of blows.

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Leveraging on our industrious professionals, we are offering a supreme quality range of Soil Cone Penetrometer. This is especially useful to obtain reliable and accurate results for those soils which have low plasticity index. Offered penetrometer is manufactured using optimum quality raw material and latest technology by our skilled professionals. Besides, this penetrometer is made available in various specifications. This penetrometer is highly appreciated among our clients for its precise design and durability. We provide this penetrometer at very competitive price to our clients.

Features:

• Efficient operations

• Long working life

• Excellent performance

Soil Cone Penetrometer:

• AS PER IS: 2720 (Part V)

Introduction:

• 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 ± 0.5 gm penetrates 25 mm gives the Liquid Limit.

General Description and Specifications:

• It will consist of metallic cone with half angle of 15' -30 ±15' and 30.50 mm coned length.
• It will be fixed at the end of a metallic rod with a disc at the top of the rod so as to have a total sliding weight of 148± 0.5 gms. The total rod shall pass through two guides. (To ensure vertical movement) fixed to a stand.
• Suitable provision will be made for clamping the vertical rod at any desired height above the surface of the paste in the trough.
• A brass trough 50 mm internal diameter and 50 mm depth.

Optional Accessories:

• Glass Plate: 10mm thick and about 45-50 cm square.
• Spatula : Flexible with blade about 8 cm long & 2 cm wide
• Evaporating dish: Made from porcelain material

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With our vast experience in this domain, we have enabled us to serve our clients with a broad array of Cone Penetrometer (Semi Automatic). It is used to determine the moisture content at which clay soils pass from a plastic to a liquid state. The offered penetrometer is manufactured using optimum quality raw-material and advanced technology. As per the requirement of our clients, we provide the entire range in various sizes and shapes. Offered at market leading price, this penetrometer meets the specific requirements of our valued clients.

Features:

• Sturdy construction

• Durability

• Compact design

Semi Automatic Cone Cone Penetrometer:

• AS PER BS 1377-2.

Introduction:

• Used to determine the moisture content at which clay soils pass from a plastic to a liquid state.

General Description and Specifications:

• Two Versions are available.
• One the standard one & the other is semi-automatic with timer where the cone is allowed to free fall for a period of 5 seconds including one each of 50 gm & 100 gm. weight
• One penetration cone, preset counter & measuring cup.
• The apparatus is fitted with a 150mm dia dial indicator for direct reading of penetration
• supplied Complete with 30ºC , 30mm long test cone
• Manufactured From stainless steel & includes adjustable levelling feet.

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We are recognized as one of the prominent organizations of a wide gamut of Sand Pouring Cylinder (Field Density Test Apparatus). This apparatus is used for the in place determination, of the dry density of compact, fine and medium grained soils and for layers not exceeding 50 cm thickness. Provided apparatus is manufactured from using superior quality aluminium and advanced technology. While manufacturing the offered range of apparatus, our experts lay special emphasis on the overall quality and durability. Additionally, our quality controllers keep an eye on the entire range to avoid any possibility of flaw.

Features:

• Rugged construction

• Long operational life

• Excellent performance

SAND POURING CYLINDER:

• AS PER IS: 2720 (Part XXVIII) - 1966.

Introduction:

• This apparatus is used for the in place determination, of the dry density of compact, fine and medium grained soils and for layers not exceeding 50 cm thickness.

General Description and Specifications:

The complete apparatus consists one each of:

• Small sand pouring cylinder 3 liters capacity mounted above a pouring cone and separated as a shutter hole.
• Cylindrical calibrating container internal dia. 100 mm and internal depth 150 mm fitted with a flange 5cm wide.
• Metal tray 30 cm square and 4 cm deep with a 10 cm hole in center.

Optional Accessories:

• Metal tray, 30 cm square and 4 cm deep without hole. Test forms pad of 50.

Note: Sand poring cylinder large as per IS 2720 (P-XXVIII) also available.

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Features:

• Rugged design

• Smooth functioning

• Reliable operation

SAND DENSITY CONE APPARATUS:

• AS PER ASTM D 1556- AASHTO T 191.

Introduction:

• Used to determine the in-situ density of fine grained compacted soil.
• The test consists in digging a hole into the ground and then collect, dry and weight the sampled soil.
• The hole is then filled with dry sand from the cone container.

General Description and Specifications:

• The apparatus consist of a double metal cone, one plastic 5 lts jar & a metal tray with centre hole. Size of the cone is 6 ½”.

• On request 12” (305 mm) Sand Density Cone Apparatus is also supplied at an extra cost

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Features:

• Compact design

• Easy to operate

• Superior performance

Core Cutter:(Field Density Test Apparatus by core cutter method)

• AS PER IS: 2720 (Part XXIX) - 1966.

Introduction:

• This is used for determination of in situ dry density of natural or compacted fine grained soil, free from aggregates.
• A cylindrical cutter is used to extract a sample of the soil with the help of a dolly and rammer.
• From the weight, density and the moisture, and dry density of the soil is ready calculated.

General Description and Specifications: It consists one each of:

• Core cutter (Cylindrical): Cylindrical core cutter made up of steel 100 mm internal dia x 127.3 mm Long and wall thickness 3 mm beveled at one end.
• Steel Dolly: 25 mm high and 100 mm diameter, wall thickness 7.5 mm Fitted with a clip to enable it to be located on top of core cutter.
• Steel Rammer: With solid mild steel foot 140 mm dia. And 75 mm height with a concentrically screwed 25 mm dia. Solid mild steel staff. The overall length of the rammer including the foot as well as the staff should be approximately 900 mm. Should weigh approximately 9 Kg.

Spare, Optional Extra and Accessories:

• Cylindrical core cutter 100 mm l.D. x 175 mm long.
• Cylindrical core cutter 100 mm I.D. x 175 mm long.
• Cylindrical core cutter 100 mm I.D. x 175 mm long.
• Dolly
• Test form pad of 50.

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STANDARD COMPACTION TEST (Standard Proctor Test Apparatus):

• AS PER IS: 2720, (Part-Vll)

Introduction:

Compaction:

• When Compaction of soil in the field is done using rolling machines, it is important to know O.M.C. and M.D.D. values.
• Standard Compaction test is used to determine in laboratory Optimum Moisture Contents (O.M.C.) and Maximum Dry Density (M.D.D.) of soils, which represents field samples.
• Compacted soils have increasing use in embankment of dams, highways, railways etc.
• In recent years in order to meet current heavy traffic on runways and highways, heavy duty field compacting equipment has come into use and in view of reproducing greater densities, heavy compaction tests using heavy compaction apparatus have been developed.

General Description and Specifications:

The apparatus consists one each of

• Compaction Mould: Made of Mild steel or Gun Metal, 100± 0.1 mm I.D. x 127.3 ± 0.1 mm mm height x 1000 c volume, complete with collar and base plate.
• Rammer 2.6 kg x 310 mm controlled fall. Weight of rammer is 2.6 Kg, diameter is 50 mm, chrome plated.

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Relative Density Apparatus:

• AS PER IS 2720 (PART XIV), ASTM D 4253 & ASTM D 4254

Introduction:

• This equipment is used for the determination of the relative density of cohesion less free draining soils and meets the essential requirements of IS 2720 (Part-XIV).

General Description and Specifications: The equipment consists one each of:

• Vibratory table: with cushioned steel vibrating deck about 75 cm x 75 cm.
• It has a frequency of approximately 3600 vibrations per minute under a 115 kg load.
• Amplitude is variable in between 0.65 mm in steps of 0.05 to 0.25 mm, 0.25 to 0.45 mm and 0.45 to 0.65 mm.
• Suitable for operation on 415 volts, three phase supply
• Cylindrical metal unit weight mould, 3000 ml capacity.
• Guide Sleeve with clamp assembly.
• Surcharge base plate for mould.
• Handle for surcharge base plate.
• Surcharge weight.
• The total weight together with surcharge base plate and handle is equivalent to 140 kg./sq.cm. for mould.
• Cylindrical metal unit weight mould, 15000 ml capacity.
• Surcharge base plate for guide sleeve.
• Surcharge weight for cylindrical mould of 15000 ml. cap. (Total weight together with the above mould & surcharge weight is equivalent to 140 kg / sq.cm.)
• Dial gauge holder & Calibration bar 75c 300 mm x 3 mm.

Accessories:

• Dial gauge 0.01 mm x 50 mm travel.
• Extension piece 25 mm for dial gauge.

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Relative Density Bottles:

• AS PER BS 1377-2, ASTM D 854

Introduction:

• These bottles are used for relative density measurements,

General Description and Specifications:

• Made from borosilicate glass with capillary bored stopper.

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Pocket Penetrometer:

• AS PER ASTM D 1558 D 2573

Introduction:

• This instrument is used to estimate approximate unconfined compressive strength and the estimation for shear strength of soil.
• Cohesive soils can also be classified in terms of consistency using this Penetrometer.
• This is a handy and convenient instrument.

General Description and Specifications: It consists of

• A light weight barrel assembly with polished and ground steel loading piston plunger.
• A direct reading scale is engraved on the piston barrel and indicates load in kg./sq.cm.
• A maximum load indicator ring is provided on the penetration plunger.
• The calibrated spring is heat treated and plated for rust resistance.
• The barrel diameter is 20 mm and the length 150 mm.
• Supplied in storage box.

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Rapid Moisture Meter (0-25%):

• AS PER IS: 2720 (PART II)

Introduction:

• For quick determination of moisture content of materials in powder form viz. Soil, sand, coal, pottery slip, cement etc.
• Calcium carbide when comes in contact with moisture acetylene gas in generate.
• This principle is used in rapid moisture meter.
• A weighted quantity of sample is mixed with fixed quantity of calcium carbide reagent and the whole mixture is thoroughly shaken in a vessel to which a pressure gauge is fixed.
• The acetylene gas produced develops pressure and pressure gauge is calibrated to read percentage moisture.
• The instrument indicates moisture on wet/weight basis easily convertible to dry weight basis

General Description and Specifications:

• The unit consists of a pressure vessel with clamp for sealing cap, rubber sealing gasket, pressure gauge calibrated in percentage moisture content 0-25% X 1% on the wet weight basis, a counter poised balance for weighing sample, a scoop for measuring carbide reagent, a bottle of reagent, one cleaning brush and a set of 4 steel balls (3 of 12.5 mm & 1 of 25 mm dia.) for thorough mixing. Complete in highly polished wooden carrying case with handle.

OPTIONAL: RAPID MOISTURE METER (0-50%)

• Same as above but pressure gauge calibrated 0-50% x 1%.

• Carbide reagent, in bottles of 400 gms each

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DIRECT SHEAR APPARATUS (MOTORISED SIX SPEEDS)

• AS PER IS: 2720 (Part - Vlll), ASTM D- 3080.
• Same as above but having 6 rates of strain 1.25, 0.25, 0.05, 0.01, 0.002 & 0.0004 mm/ min.
• Works on 230 V A.C. Nett Wt. 185 kg.

• Consists of 3 consolidation test assemblies mounted on a single frame.
• Complete weights 3 sets of consolidometer cell assembly for 60 mm dia samples and three sets of weights each giving 10 kg/sq.cm on each sample.

• Others models are available with Single speed, six speed, Twelve speed rate of strain
• Also available in Electronic Version

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SAMPLE EXTRACTOR FRAME: HYDRAULIC TYPE:

• AS PER IS:2720(PART II)

Introduction:

• This extractor Frame is used for taking out soil samples compacted or undisturbed, from 100 mm dia and 150 mm dia cylinders such as core cutters, Proctor moulds, C.B.R. moulds etc.

General Description and Specifications:

• It consists of a 5 Ton capacity hand operated, hydraulic jack mounted on a suitable frame.
• Two plungers, one for 100 mm dia and the other of 150 mm dia moulds are supplied. One thrust plate for 150mm dia and one for 100 mm dia specimens are also supplied. Height of thrust plate is adjustable.

• Set of Plungers adaptors and thrust plates for 38 mm, 50 mm and 75 mm dia specimen.
• Set of Plungers adaptors and thrust plates for 38 mm, 50 mm and 75 mm dia specimen.:
• Set of Plungers adaptors and thrust plates for 38 mm, 50 mm and 75 mm dia specimen.

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SWELL TEST APPARATUS:

• AS PER IS: 2720

Introduction:

• Remolded Compacted soil, when soaked in water, absorbs water and swells.
• Swell Test Apparatus is designed to determine the swelling pressure developed by soil specimens molded to desired densities at known moisture content.

General Description and Specifications:
The outfit comprises the following:

• One loading unit Hand operated 5 Ton capacity with two rates of travel.
• One Gun metal mould, 100 mm dia x 127.3 cm height X 1000 cc volume with base plate and collar.
• One perforated swell plate 100 mm dia X 16 mm thick.
• One spacer 100 mm dia X 12.7 mm thick.
• Two porous stone of 100 mm dia X 12.7 mm thick.
• One load transfer bar.
• One steel ball & one soaking tank, 250 mm dia x 210 mm high.
• Dial gauge 0.01 mm X 25 mm travel.
• Proving ring of 2.5 KN capacity with calibration chart and carrying case.

• High sensitivity Proving Ring, 250 kg or 500 kg fitted with 0.002 mm dial gauge with certificate in a nice wooden carrying case.
• Dial Gauge 0.01mm x 25mm travel

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• AS PER IS: 8764, 1978.

Introduction:

• Used for testing rock, aggregate and core samples as well as out crop specimen in their original shape.
• Very useful for rock classification.
• This is a portable instrument and is useful in the field also.
• Uniaxial compressive strength for rock specimen can also be predicted approximately.

Specifications: The instrument comprises of:-

• Loading Frame: A pillar type load frame on the base of which at the centre is fixed a 10 Ton (100 KN) capacity hydraulic jack with a conical platen at the top of jack.
• Conical platen: is fixed to the top plate of the frame at its centre. The distance between two conical platen is fixed to the top plate of the frame at its centre. The distance between two conical platens is adjustable by vertical movement of the upper plate of the load frame. Loading jack with integral hand operated pump.
• Load / Pressure gauge 0-2500 kgf x 25 kgf & 0-10000 kgf x 50 kgf.

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CALIFORNIA BEARING RATIO APPARUTUS (HAND OPERATED):

• AS PER IS: 2720 (Part - XVI)

Introduction:

CALIFORNIA BEARING RATIO TEST (CBR)

• The C.B.R. Method is used for finding the relative bearing ratio and expansion characteristics of soil of base, sub-base and sub-grade for the design of roads, pavements and runways.
• Test can be made on all types of soils including sand, gravel, crushed stone etc. (Passing through 20 mm IS Sieve)
• C.B.R. test is used extensively for selection of materials and control of sub-grades. The procedure of test is very simple.
• A 50 mm dia penetration piston is forced in the test soil and loads required for the penetration to penetrate different depths are recorded by means of a proving ring fixed to the penetration piston assembly and a dial gauge.
• Both Laboratory C.B.R. and field C.B.R. apparatus are available.

General Description and Specifications: The equipment consists one each of the following:

• Load frame: Hand operated, Capacity 5000 kg (50 KN) with high and low rates of travel of the lead screw.
• Mould: made from Gun metal / Brass, 150 mm internal dia x 175 mm high, with perforated base plate and extension collar 50 mm high , tie rods and wing nut.
• Penetration piston: face dia 50 mm, 100 mm long with adjustable bracket for penetration dial gauge.
• Circular metal space disc: 148 mm dia x 47.7 mm high with detachable handle.
• Annular metal weight: 2.5 kg, 147 mm dia with 53 mm dia central hole.
• Slotted metal weight: 2.5 kg, 147 mm dia with 53 dia slot.
• Perforated plate: made of Gun-metal / Brass, 148 mm dia with adjustable stem and lock nut.
• Metal tripod: for dial gauge.
• Cutting collar: for obtaining sample from field.
• Rammer: 2.6 kg weight with drop of 310 mm, controlled drop through guide.
• Rammer: 4.89 kg with drop of 450 mm, controlled drop through guide.
• Proving ring: high sensitivity, capacity 1000 kg with calibration chart and carrying case. Dial gauge graduated 0.0002 mm, range 5 mm.
• Strain dial gauge: least count 0.01 mm x 25 mm trave

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LABORATORY VANE SHEAR (MOTORISED)

• AS PER IS: 2720 (Part XXX) - 1968.

Introduction:

VANE SHEAR:

• Soft and sensitive soils whose shear strength is less than 15 KN/m2, the results are dependent on operator’s skill.
• Even pushing the sample tubes in soil may cause some disturbance.
• Experience shows that carefully controlled compression tests results can be related to figures obtained by pushing a small vane in the soil and rotating it at a controlled rate and measuring the force, required for maximum resistance.
• Vane Shear Test can be conducted in a laboratory or in the field.

• Consists of a torque head adjustable in height by mean of a lead screw rotated by a drive wheel to enable the vane to be lowered in to the specimen.
• Rotation of vane is by means of a hand wheel which operates a worm gear arrangement turning the upper end of a calibrated torsion spring.
• The vane shaft is attached through the hollow upper shaft to a resettable pointer, which indicates the angle of torque on a dial graduated in degrees.
• The dial reading multiplied by spring factor gives the torque.
• A container should also supplied with set of springs one each approx. 2 kg-cm, 4 kg-cm and 8 kg-cm in a wooden carrying case preferably electrically operated, rate of rotation is 1/16 RPM.
• Suitable for operation on 230V, 50 Hz, Single phase, AC supply.

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Consolidation Apparatus (Three Gang Model):

• Consists of 3 consolidation test assemblies mounted on a single frame.
• Complete weights 3 sets of consolidometer cell assembly for 60 mm dia samples and three sets of weights each giving 10 kg/sq.cm on each sample.