AIR ENTRAINMENT METER - 01

As Entertainment of air in limited percentage improves durability of concrete and very low percentages deteriorate it, measurement of air entrapped in freshly mixed concrete becomes important. The use of chemical additices to increase workability of concrete requires an air content check to be made. Air Entertainment meters are used to determine air entertained in freshly mixed concrete by pressure method.

Specifications : The apparatus consists of a pressure tight flanged cylindrical measuring bowl of 0.005 cubic meter capacity for maximum size of aggregate 38mm. The bowl is fitted with a removable flanged conical cover assembly with the help of a seal. The conical cover has an air valve and a pet cock for bleeding off the water. A transparent cylindrical stand pipe which is graduated in air content is fixed to the conical cover assembly. Pressure is applied to the specimen with the help of a pressure bulb and the pressure is recorded on the pressure gauge which is mounted on the stand pipe. The whole assembly is mounted on a flat base. The instrument is supplied complete with one each following accessories. Calibration cylinder with spring clamp, Trowel, Tamping rod, Straight edge, Rubber mallet and measure.

  AIR ENTRAINMENT METER - 02

Same as above but 0.007 cubic meter capacity for maximum size of aggregate 38mm.

  AIR ENTRAINMENT METER - 03

Same as above but 0.01 cubic meter capacity for maximum size of aggregate 75mm.

  AIR ENTRAINMENT METER - 04

Same as above but 0.1 cubic meter capacity for maximum size of aggregate 150mm.

Spaces: Rubber pressure bulb with tube & Gasket for vessel.

  BLAINES AIR PERMEABILITY APPARATUS

The apparatus is used for determining the fineness of cement in terms of specific surface expressed as total surface area in square centimeters per gram of cement. This is a variable flow type air permeameter.

Specifications : The apparatus consists one each of permeability cell 12.5mm I.D., Manometer 'U' type mounted on stand with a built in stop cock, Perforated disc, Plunger Rubber stopper, Rubber tube 30cm long. Packet of 12 filter paper discs and a bottle of 100cc dibutyiphthalate liquid. Spares and Accessories:Punch to cut filter paper discs. Non-perforated disc. Suction bulb

  CAPPING SET - HORIZONTAL

For 15cm dia x 30cm length cylinders.

Specifications : The set comprises of a cylinder capper, a cylinder carrier and a ladle. The cylinder capper consists of a base on which two accurately machined plates are mounted vertically. One plate is firmly fixed and the other one is adjustable horizontally. Two plates are provided with holders of holding the cylinder in position. The holders are split and the bottom half of each holder is fixed firmly and the top half of each is removable and bolted down to the lower half. On the upper parts of the vertical plates 'V's are provided for pouring the capping compound. Two spacers are also provided. Complete with cylinder carrier and ladle for molten compound.

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  CAPPING SET (HORIZONTAL) -02

For 100mm dia x 200mm length cylinder.

Specifications : Same as above but for use with specimens 100mm dia x 200mm long.

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  CAPPING SET - VERTICAL - 03

For capping compression cylinder specimens. This apparatus can be used both in the laboratory and in the field. The specimens capped in this apparatus have plane parallel faces.

Specifications : For cylinders 150mm dia x 300mm long. Consists of a base with an upright. The upright serves as a guide for positioning the capping plate and the cylinder. The 19mm thick capping plate is machined accurately. There is a recess in the plate for keeping the molten capping compound and to position cylinder. Complete with cylinder carrier and ladle.

  CAPPING SET (VERTICAL) - 04

For 100mm dia x 200mm long.

Specifications : Same as above but for cylinders 100mm dia x 200mm long.

CYLINDER CARRIER : For carrying the concrete cylinders in the laboratory and in the field. Double handles make it easy to hold the cylinder during capping operations. Complete with snap clamp and cushioning lining. Can be used both for 15cm dia and 10cm dia cylinders.

CAPPING MOULD : For capping the concrete cylinders, it consists of an accurately machined plate with a recess for 15mm dia specimen.

WARMER : An electriacally heated and thermostatically controlled bath for melting the capping compound. Supplied with cover and handle. Suitable for operation on 230 Volts A.C. single phase.

CAPPING COMPOUND : Used for Capping the ends of concrete cylinders to be tested. Available in packs of 5 kg.

BOWL & LADLE : Metallic bowl is used to carry the capping compound and ladle is used to pour molten capping compound intothe gorves between specimen and capping plate. Supplied as set.

  CEMENT SAMPLER

This is a brass tube approximately 53cm long and 2.8cm I.D. with a wooden handle. Total length approximately 73cm. The tube has the sharp angular edge which conveniently pierces cement bags. An air hole of approximately 3mm dia is drilled on the near handle. Total sample collected at one time is 300cm 3 approximately.

  COMPACTION FACTOR APPARATUS

The apparatus is used for determining the workability of fresh concrete, provided the maximum size of the aggregate does not exceed 38mm. The test is particularly useful for concrete mixes of very low workability where true slump values are not reliable.

Specifications : It consists of two rigid conical hoppers and a cylinder mounted on a rigid metal frame. The lower openings of the hoppers are fitted with hinged trap-doors having quick release catches. A circular metal plate is provided to cover the top of the cylinder. Supplied complete with one plaster's trowel and one tamping rod, 16mm dia x 600mm long, one end rounded.

  Compression Testing Machine 2000 KN

Compression Testing Machine 2000 KN (Electrically Operated) - 01

Compression Testing Machine (Electrically Operated) - Four Pillar type

It is an electric cum hand operated for compression tests on concrete specimens up to 20cm dia and 30 cm in height. The machine meets the essential requirements of various Indian, British & American standards for compression tests.

Loading Unit : The hydraulic jack of 2000 kN capacity is fixed to base. The upper platen has got a self aligning action and is attached to a screw which passes through the cross head and can be raised for lowered for initial clearance adjustment. The lower platen rests on the jack ram and is positioned with the help of a centering pin. Loading is accomplished by the upward movement of the lower platen.

Pumping Unit : The motorized pumping unit which is housed in an elegant console is of double plunger type and is driven by 3 phase 440 volts 50 cycles electric motor. The pumping unit is separate unit connected to the jack by means of a steel connecting tube. A junction box is suitably fixed to connect the motor to the mains through a push button starter. The pumping unit is fitted with gauges. A maximum pointer is provided to facilitate taking of the reading after failure of the specimen. The pressure gauges are fixed on the pumping unit at an angle for easy readability.The machine is fitted with a hand wheel control which enables the rate of application of load to be varied. The machine is also equipped with facilities for hand pumping in case of power failure. The electric pumping unit is fixed with a micro-switch off the motor automatically as the load on the machine approaches the rated capacity. Relays are also incorporated in the pumping unit so that in the case of break-down of power supply, the motor will stop and would not-re-start unless starting switch is operated.

Other Capacity : 10 Tons, 25 Tons, 50 Tons, 100 Tons, 150 Tons, 200 Tons, 300 Tons

  Digital Compression Testing Machine

Digital, motorized, strain control etc., complete with Pumping unit

Range : 200 ton, 400 ton, 500 ton

  Compression Testing Machine 1000 kN

Compression Testing Machine 1000 kN (Hand Operated) - 02

The machine is designed for portability, operating convenience and accuracy. It is a compact and self contained. Unit ideally suited for mobile and field laboratories.

Capacity of the machine is 1000kN. Specimens upto 15cms cubes and 15 cms dia x 30 cms high cylinders can be accommodated. Load measurement is done by a 15 cms dial bourdon tube type hydraulic pressure gauge calibrated in 100 divisions, fitted with a maximum pointer (lagless pointer). The gauge is calibrated against an RTC tested proving ring.

The machine is of channel construction, giving excellent lateral rigidity. The hydraulic loading unit is located on the base of the loading machine. The hydraulic jack is precision machined. The piston and cylinder are ground and lapped to fine tolerances. The lower platen can be centrally located on the base, and has concentric grooves for centering the specimen. Spacer is provided to test small specimens. The upper platen is mounted on a swivel arrangement for self aligning action. The pump is fitted integral on the testing machine along with oil reservoir. The hand operated pump is of two speed concentric piston type.

Other Capacity : 10 Tons, 25 Tons, 50 Tons, 100 Tons, 150 Tons, 200 Tons

  CONCRETE TEST HAMMER (SMALL)

The concrete test hammer is an instrument which is easy to use, for quick and approximate measurement of the resistance to pressure of manufactured concrete products. The principles on which it works are based on the rebound impact of a hammer on a piston which rests against the surface of the concrete products. The Greater the resistance of the concrete, greater is the rebounded impact. By reading this rebound impact on a scale and relating it to curves on graphs supplied with the instrument, the resistance to compression in MPa or PSI can be found, with 20% of actual.

Specifications : Consists of a barrel in which is housed a hammer mass attached to an impact spring which slides on a guide bar. A plunger is attached to the guide bar which is pressed against the surface to be tested. As the piston is pressed against the surface to be tested, on reaching the compressive strength, the hammer mass is released and rebounds to a certain extent (according to the strength of the surface) which is indicated by a rider on a calibrated scale. A lock button fixed on the body of the hammer locks the rider in place and the rider can be recared to zero position by using the same button. The equivalent compressive strength can be computed from the chart supplied. Each hammer is calibrated against at standard test hammer, and is suitable for specimen of compressive strengths 100 - 700 kg/cm. The instrument, complete with a grinding stone for polishing the test surface, is supplied in carrying case.

  CONCRETE TEST HAMMER (BIG)

It is similar to the above but is used for testing concrete with over size aggregates (for which test, cubes promise no reliable results) and for testing concrete roads. Its plunger is wider as such, the amount of concrete reached by the impact is considerbly greater. With this model also the results obtained are within 20% of the actual compressive strength. The instrument is supplied with two handles which can be attached to the body of the concrete test hammer for carrying out the test easily. Complete with grinding stones.

  Flexure Testing Machine

Flexure Testing Machine (Motorised) Rilem - Cembureau Test

It is used for testing 40mm x 40mm x 160mm mortar specimens for flexural strength. (Rilem Cembureau Test) by single point loading.

Specifications : It is a motorized, mechanical unit. The speed is adjusted so that the load increase on the specimen is between 4 to 6 kg/sec. A flexure test attachment for keeping the specimen in position is also supplied. This consists of two rollers 10mm. diameter and spaced 100mm apart, and a third roller of the same diameter equidistant from the first two and for transmitting the applied load to the opposite face of the prism. The unit is for operation on 230 Volts, single phase, 50 cycles A.C.supply. Loads are measured on a proving ring fitted with a sensitive dial gauge. Supplied without proving ring.

Accessories: Proving ring, capacity 500 kN.

  Flexure Testing Machine - Hand Operated

Flexural tests of concrete beam have their own importance in concrete Road Constructions as well as Buildings constructions. Normally concrete beams of sizes 10cm x 10cm x 50cm or 15cm x 15cm x 70cm are tested for flexural strength.

Specifications : The machine consists of a hand operated load frame. The lower platen has two rollers, the distance between which is adjustable. For 150mm x 150mm x 700mm beam, the centre to centre difference between the rollers is 600mm, while it is 400mm for beams of size 100mm x 100mm x 500mm size beam. A pressure gauge to indicate load is fixed on the load frame. A small pumping unit is attached to the load frame. Total capacity of the machine is 100 KN and a 150mm dia pressure gauge - 100 KN x 1 KN is fitted on the machine. Since this is a hand operated light weight machine, it is useful for field laboratory also.

  FLEXURE TESTING MACHINE (ELECTRICALLY OPERATED)

Same as above but instead of a hand pumping unit, a separate electrically cum hand operated pumping unit housed in a cabinet is supplied. The pressure gauge 0-100 KN x 1 KN, On/off switch and a slow/fast level to control rate of loading are fitted on the front panel of the pumping unit. A facility for hand operation is provided. A micro switch and relay fitted inside the pressure gauge protects the unit from over loading.

  FLOW TABLE

This is used for determining the workability of building limes.

Specifications : The flow table consists of a 30cm. dia ground and polished steel plate with three inscribed annular circles. 7, 11 and 19cm. dia. The table top is arranged for a free fall of 12.5mm by a cam action. Supplied complete with one brass conical mould, 65mm I.D. at base and 40mm I.D. at top, height of the mould 90mm.

  FLOW TABLE - 02

It is used for determining the flow of cement concrete.

Specifications : Consists of a steel table top 76.2cm (30 inch.dia), finely machined. The integral cast ribs are designed for support and strength. The stand is fabricated out of cast iron and is of study construction. Holes for mounting in foundations are drilled in the base plate. The ground and hardened steel cam is designed to lift and drop the table by 12.5mm. The hand wheel makes it simple to operate the table. Supplied with one conical mould with handles, 12cm. height having 17cm. top internal diameter and 25cm. I.D. at the base. Complete with a tamping rod 16mm. dia x 600 mm long one end rounded.

  FLOW TABLE - MOTORISED

Specifications : Same as above but electrically operated, to raise and drop the table top, approx. 15 times in 15 seconds. Suitable for operation on 230 Volts, 50 cycles, A.C.supply.

  GILLMORE NEEDLE APPARATUS

This instrument is used for determining the time setting of hydraulic cement.

Specifications : A base with a vertical shaft and two horizontal arms. The lower arm is adjustable for height. 1 No. Initial Needle 1/12 inch dia 1/4 lb.wt. 1No. Final Needle 1/12 inch dia. 1lb.wt. 1No. Glass base plate. Complete as above.

  HYDRAULIC JACK

HYDRAULIC JACK (HAND OPERATED) REMOTE TYPE

For applying loads for varous tests in the field or laboratory. Hydraulic Jack hand operated with separate pumping units. These Jacks are portable and available in various capacities. The pumping unit is connected to the hydraulic jack by means of a flexible connecting pipe 2 meter long. The jack is fitted with lifting handles for easy transportation. The approximate lift of the ram is 90 to 120mm. the pumping unit is a single plunger type with detachable handle. The unit is fixed on a Channeled base which is fitted with lifting handles. A pressure release valve is provided on the pumping unit. The load is indicated on a 15cm dial hydraulic pressure gauge of appropriate capacity which can be detached from the pump when not in use. The least count of the calibrated dial will be according to the capacity of the gauge (Normally 100 divisions for full capacity)

  INTEGRAL TYPE HYDRAULIC JACKS

INTEGRAL TYPE HYDRAULIC JACKS - CAPACITY (30, 50 & 100 KN)

These are hydraulic jacks with integral pumping unit. The hydraulic pressure gauge is of 15cm dial mounted on the side of hydraulic jack. A detachable lever is provided to operate the pump. Lift of the ram is 95 to 100mm. Face of the ram is flat.

Note: Hydraulic jacks of 1000 KN & 5000 KN capacity can be supplied with two speed pumping units. These jacks have lift to approximately 200mm.

  HYDRAULIC JACK CENTRAL HOLE TYPE

HYDRAULIC JACK CENTRAL HOLE TYPE - CAPACITY 50 TONNES

The hydraulic jack has a 25mm diameter hole going through the centre. It is designed for dual direction and has a working stroke of approximately 22cm. A specially designed hand operated pumping unit is supplied for operation in both directions. A detachable handle is provided for operating the pump. The load is indicated on a 15cm dial hydraulic pressure gauge calibrated 0 - 50000 x 500 kg.

Note : Central hole jacks of other capacities can also be supplied on special request.

  JOLTING APPARATUS

For making standard rectangular specimens of 40 x 40 x 160mm. of Portland and pozzolana cement mortar for determining the transverse strength.

Specifications : The jolting apparatus consists of a rectangular table rigidly connected by two support arms to a spindle at a horizontal distance of 800mm from the centre of the table. There is a projecting lug with a plane face on the lower face of the table beneath which is a stop with a rounded upper surface. The table can be raised and allowed to fall freely on the stop by a cam which is connected to a motor and gear box through a V-belt and pulleys. The cam rotates at a rate of 60 rev./min. A stroke counter fitted with micro-switch is provided which stops the machine after surmounted by the hopper can be clamped rigidly to the table. Supplied complete with mould and hopper. Suitable for operation on 230 Volts, single phase. A.C.supply.

Spares and Accessories: (1) Steel mould with base plate having three compartments each having 40mm x 40mm x 160mm. internal dimensions. (2) Apparatus for demoulding the specimen.

  KELLEY BALL PENETRATION APPARATUS

The apparatus is used to determine the workability of Portland cement concrete. The Kelly Ball test is considered to be simple and much faster than the slump test. Twice the Kelly Ball reading approximately equals the slump.
Salient Features

Specifications : It consists of a cylinder with a ball-shaped bottom and handle, together weighing 15 kg. A strip frame, guides the handle and serves as a reference for measuring the depth of penetration. The handle is graduated in MM. Penetration can be recorded to the nearest 0.5mm.

  CEMENT AUTOCLAVE (LABORATORY)

CEMENT AUTOCLAVE (LABORATORY) WITH STAINLESS STEEL CHAMBER (21 KG/CM.SQ. PRESSURE)

The autoclave is suitable for conducting accelerated soundness tests on cements or the autoclave expansion test requiring constant steam pressure with the correspondent constant pressure. It consists of a stainless steel cylinder with a welded heat insulated voer, mounted on a sturdy supporting frame, enclosed in a heat insulated metal housing, attractively finished. The attached control unit encloses a sensitive pressure regulator and pressure gauge, power switches and pilot lights for controlling the electric heating units. Inside Chamber Dimensions - 10.5cm diameter x 40.5cm height suitable for operation on 230 V, 50 Hz, Single Phase, A.C. supply. Supplied complete with Test bar holder, special rack to hold specimens above water level in the autoclave and in a vertical position to expose them in the same manner.

  LABORATORY CONCRETE MIXER (MOTORISED)

Concrete mixer laboratory type, electrically operated. Designed to remove the burden- some work of hand mixing. Uniform thoroughly mixed batches can be produced. The counter balanced drum is easy to tilt 1.1/2 to 2cu.ft.mix. The total drum volume is however 3cu.ft. Mounted on a sturdy rubber tyred stand, and the drum is mounted for end discharge and equipped with end towing pole. Equipped with ½ h.p. electric motor. Suitable for operation on 220/230 volts A.C. single phase.

  LABORATORY CONCRETE MIXER (HAND OPERATED)

This is a Hand Operated Concrete Mixer and is suitable to mix 1 cuf to 1.1/2 cft material. It is mounted on two rubber tyred / stand.

  Laboratory Jaw Crusher

The laboratory Jaw Crusher is designed for fast crushing of Aggregates, Ores, Minerals, Coal, Coke, Chemicals and other similar materials. It is compact and of rugged construction for general laboratory or small pilot plant operations.
Two jaws of manganese steel are provided in this laboratory Jaw Crusher. The moveable jaw produces two blows for every revolution, thus reducing over sizing to a minimum. A combination of forward and downward strokes with a rocking action exerts pressure on the coarser material, yet permits the finished material to pass through the jaws.

  LATERAL EXTENSOMETER

This is for determining the lateral extension of 15cms dia x 30cm high cement concrete cylinders while testing them under compression.

Specifications : The unit consists of two movable frames pivoted at one end. The extensometer is fixed to the specimen with the help of tightening screws. The lateral extension is indicated on a dial gauge of 0.002mm x 12mm travel. The extension is magnified 2.5 times and the dial gauge readings are to be divided by 2.5 to get the exact readings. A spacer strip is provided to initially set the dial gauge, and can be removed after initial setting. Supplied in a wooden carrying case.

  LE CHATELIER FLASK

Used for finding specific gravity of Hydraulic Cement. Made from Borosil glass. The flask is 243mm in total height, having a bulb of 90 mm dia of 250ml approximate capacity. The long neck of the flask has at top a funnel of 50mm dia in which fits a ground glass stopper. The neck has over-all 11mm I.D. upper portion is graduated from 18 ml to 24ml with 0.1ml graduation. Just at the bottom of the neck 1ml capacity is marked in between there is 17ml capacity bulb.

  LE CHATELIER MOULD

It is used for the determination of soundness by expansion method of ordinary and rapid hardening Portland cement, low heat Portland cement and class A lines.

Specifications : It consists of a small split cylinder forming a mould. On either side of the split cylinder, two parallel indicating arms with pointed ends are attached. Supplied complete with two glass plates and a lead weight.

  LENGTH COMPARATOR

It is used to measure the drying shrinkage of concrete autoclave expansion of Portland cement and potential expansive reactivity of cement aggregate combinations in mortar bars during storage, on self drying.

Specifications : The instrument consists of a channeled base over which two vertical pillars are fixed. An adjustable cross plate is at the top. A dial gauge, reading to 0.002mm x 12mm. can be fixed to the top cross plate. The plunger end of the dial gauge can be located upon a 6.5mm. dia ball or other reference point cemented in the specimen. On the base there is a similar recessed seating in which can be placed a second ball or reference point in the specimen. Complete with a stainless steel standardization bar with insulated grip and with 6.5mm dia. Balls mounted in the ends. The unit can be supplied with a 0.0001inch x 1/2inch dial gauge at extra cost

  LONGITUDINAL COMPRESSOMETER

It is designed for finding out the deformation and strains on 15cms. diameter and 30 cms. high cement concrete cylinders when subjected to compressive loads.

Specifications : Consists of a frame with a bottom ring and a top ring with tightening screws to firmly clamp the compressometer over the cylinder. A dial gauge 0.002mm x 12mm is mounted on the upper ring and the tip of the dial gauge rests on an anvil. The zero of the dial gauge can be set by adjusting the anvil screw. Supplied in a wooden carrying case.

  MORTAR MIXER

It is used for mixing cement pastes, mortars and pozzolanas.

Specifications : The apparatus consists of an epicyclic type stainless steel paddle imparting both planetary and revolving motion, by means of gears. It has two speeds of 140 + 5 r.p.m. and 285 + 10 r.p.m. with planetary motions of approximately 62 r.p.m. + 5 r.p.m. and 125 r.p.m.+/-10 r.p.m. respectively. The stand of the mixer has arrangement to raise or lower the bowl. Complete with stainless steel bowl of about six litres capacity. Suitable for operation on 230 volts, 50 cycles, single phase, A.C.supply.

  MORTAR PENETROMETER

It is used for finding out the rate of hardening of mortars sieved from concrete mixtures, by means of penetraion needles of different cross-sectional areas.

Specifications :The instrument consists of a barrel housing a calibrated spring and a stem graduated from 0-70 kg x 1 kg. Six interchangeable penetration needles of areas 645, 323, 65, 32 and 16mm sq. are provided. The penetration resistance is measured by the force exerted to penetrate the mortar by 25mm and is indicated by a sliding ring on the stem, which is graduated. Needle shanks are marked at every 12.5mm. Compete in a wooden carrying case.

  CUBE MOULDS

Specifications : These are available in different sizes and are made according to Indian and British standards. For the metric size cube moulds, the faces are machined flat to 0.02mm accuracy and finished to within 0.02mm. For the inch size moulds, the faces are machined flat to 0.01 inches and finished to within 0.01 in. All moulds are supplied complete with base plate.

• Mould Cast iron, for 50mm, Cube
• Mould gunmetal, for 50mm, Cube
• Mould steel for 7.06cms cube with loose base plate.
• Mould Cast iron for 7.06cms cube with loose base plate.
• Mould Cast iron, for 10cm cube 153 with "ISI" mark.
• Mould Cast iron, for 15cm cube 155 with "ISI" mark.
• Mould Cast iron, for 20cm cube
• Mould Cast iron, for 30cm cube

  CYLINDRICAL MOULDS

For testing concrete cylinders for compressive strength tests.

Specifications : The moulds is split vertically into two parts. The mean internal diameter is within 0.2mm and height is within 1mm. The ends are machined to 0.05. The base plate and top plate are machined flat to 0.03mm.

• Mould, Cylinder, Cast iron, 15cm dia x 30cm height .
• Mould, Cylinder, Cast iron, 10cm dia x 20cm height
• Mould, Cylinder, Cast iron, 30cm dia x 60cm height.

  RING MOULD

Consists of mould 10cm. dia x 0.5cm. deep and a glass base plate.

  Needle Vibrator

An increasing number of contractual obligations call for various forms of vibro-compacted concrete for achieving a better and more consistent mixture. The Needle Vibrator is recommended for vibro-compaction of test cylinders and beams at site and in the laboratory. This instrument can also be used at small construction sites.A motor fitted on a swivel base drives a flexible shaft, which in turn, vibrates the needle at about 10,000 vibrations per minute. (approx.)

Specifications : Needle Vibrator with a 25mm. diameter x 350mm long needle, a one meter long flexible shaft and a motor drive with a swivel head and on/off switch. Wired for 230 V. Single phase, 50 Hz.

  Pulveriser

The Laboratory Pulveriser is a disc type grinder, designed to grind virtually any material to produce a fine mesh sample in one operation. The instrument is useful for assaying, mining and for metallurgical, quarrying, aggregate processing, chemical, geological and industrial laboratories. It is a self contained grinder, with a rotary disc, having a planetary movement in a vertical plane. This feature gives added life to the moving parts and produces a sample of uniform fineness.

Grinding is done between two discs-one stationery and the other revolving eccentrically at high speed. The discs are made from heat treated mehanite metal. With the help of a convenient hand wheel, the size of the final product can be adjusted. This can be done, even while the machine is in operation. A self locking device holds the hinged grinding chamber in place and affords easy and quick access to it, for removal of ground samples and for cleaning. The Pulveriser has a capacity of reducing about half of a kg. of a quartz type sample to 100 mesh in about a minute. The Pulveriser is supplied complete with a 3 H.P. motor, a starter, a "V" belt pulley drive and mounting. Wired for 400 v, 3 Ph, 50 Hz.
Disc Diameter------175mm.
Maximum Feed size------6mm.
Yield------250 gms./min.
Size of Finished Product------100 mesh.

  SAND ABSORPTION CONE AND TAMPER

Used for determining the slump of fine aggregate in the determination of bulk and apparent specific gravity and absorption of fine aggregate.

Specifications : The equipment comprises of -A conical metal mould1.5 inch dia at the top, 3.5 inch dia at the base and 2.7/8 inch in height. A metal tamping rod weighing 12 ounces and having a flat circular tamping face 1 inch in diameter.

  SHRINKAGE BAR MOULD

The mould is used for casting specimens of cement aggregate combinations for measuring the potential expansive alkali reactivity.

Specifications : The mould, which has 25mm x 25mm x 25mm effective gauge length is made of mild steel and has accurately machined faces. The parts of the moulds are tight fitting and firmly held together when assembled. Supplied complete with base plate and four stainless steel smooth reference pins.

  SHRINKAGE BAR MOULD (TWO GANG)

Do as above but with two compartments assembled on a angle base plate.

  SHRINKAGE BAR MOULD (THREE GANG)

Do as above but with three compartments

  SHRINKAGE BAR MOULD (FOUR GANG)

Do as above but with four compartments.

Spares : Stainless steel smooth or knurled and threaded reference pins as required. Supplied in packs of one dozen.

  SLUMP TEST APPARATUS

It is used for the determination of the consistency of freshly mixed concrete, where the maximum size of the aggregate does not exceed 38mm.

Specifications : The Apparatus consists of one slump cone with handles and foot pieces. The slump cone has internal dimensions 20cm. dia at base 10cm. top dia. and 30cm height. Foot pieces can be fixed to the clamps on the base plate. The base plate has lifting handle for easy transportation. One graduated steel rod 16mm dia x 600mm long, rounded at one end and graduated in mms, is also supplied.

  STANDARD SPATULA

This is for use while casting a cement briquette.

Specifications : The standard spatula consists of a steel blade, of a special shape. A wooden handle is fixed to the stem of blade. The weight does not exceed 340gms.

  TAMPING ROD - 01

This is used for compacting concrete into Cube Moulds. This rod is made of steel. It is 16mm diameter, 60mm in length and rounded or bullet shaped at one end.

  TAMPING BAR -02

Made of steel, this is 40cm long, having a ramming face of 25mm sp. Other end has a grip, Weight approximate 2 kgs.

  Thickness Gauge

A specially designed unit comprises of a plane place with "L" shaped border and an adjustable stand with a Dial Gauge 0.01 x 25mm to check the thickness of abrassed the specimen of size 7.06 x 7.06 cm.

  Tile Abrasion Testing Machine

This is used for determination of reistance to wear for cement concrete flooring tiles. Tiles specimen of size 7.06 cm x 7.06 cm is pressed tace-wise under specific load on a grinding path and abrassive powder is evenly spread on the rotating grinding path and after specific number of revolution of the grinding disc the second parallel side of the tile is subjected to wear for similar number of rotations. The wear of the tile is measured on a thickness gauge specifically made for the purpose.

The machine consists of a disc rotating at a speed of 30 rpm in a circular tray. A bracket is provided to hold the specimen. A counter balance lever loads the specimen. Load applied is 30 kgf. A funnel is fitted to evenly spread abrassive powder on the grinding path. A pre-set counter automatically stops the machine after 22 revolutions. This counter is re-adjustable.

The machine works on 440 volts A.C., three phase electrical supply.

On request machine to operate on 230 Volts A.C. supply can also be supplied.

  Tile Flexure Testing Machine

Unit for finding flexural strength of clay roofing tiles and Cement Concrete flooring tiles. Flexural load is applie on the tiles using lead shots. The machine consists of a stand on which two 40mm dia bearing rollers or 12mm dia rollers are placed at centre distance of 150mm, 200mm, 250mm, or 270mm as the case may be. The third upper roller applies centrally flexural load by means of lever arrangement. Lead shot contained in an upper vessel start flowing into lower container at a rate of 45 to 55 kg. per minute or 200 kg. per minute there by, starting loading the specimen. Arrangement is made such that loading automatically stops when specimen breaks. Supplied without lead shots.

Accessories : Lead shots supplied in packs of 20 kgs.

  GAUGING TROWEL

Specifications : Weight approximately 210gm. Best quality with hardwood handle Blade length approx. 200mm.

  TROWEL

Specifications : 100 to 150mm long steel blade with straight edges.

  VEE BEE CONSISTOMETER

The instrument is used for workability as well as consistency for fresh concrete. A slump cone and a graduated rod supplied with the instrument helps the operator to find out slump values and Vibration Table with container and acrylic disc is used to find out workability of concrete expressed in Vee Bee degrees, which is defined as the time in seconds to complete required vibrating at which the fresh concrete flows out sufficiently to come in contract to the entire face of acrylic disc.

Specifications : The equipment consists of : A Vibrating Table size 380mm long and 260mm wide, resting upon elastic support at a height of about 305mm above the floor, complete with start/stop switch, cord and plug. A holder is fixed to the base into which a swivel arm is telescoped with funnel and guide sleeve. The swivel arm is also detachable from the vibrating table. A graduated rod is fixed on a swivel arm and its end a plastic disc is screwed. The division of scale on the rod record, the slump of the concrete in millimeters, supplied complete with a sheet metal container with lifting handles which can easily be fixed to the Vibrating Table. A slump cone open at both ends with lifting handles and a Tamping rod of size 16mm dia and 600mm long, rounded at one end.

  VIBRATING MACHINE

MOULD VIBRATOR OR MORTAR CUBE VIBRATOR - Concrete moulds are easily cast by using a tamping bar or a vibrating table. However air tapped in cement mortar paste can not be thus removed while casting cement mortar moulds. Easy method is to impart greater vibration of lesser amplitude to the mould while casting. This is achieved in a vibrating machine. Vibration machine is used for the preperation of mortar cubes for the determination of compression strength of ordinary and rapid hardening Portland cement, low heat portland cement, portland bleast furnace cement and high alumina cements.

Specifications : The machine consists of a vibrating frame assembly and an electric motor mounted on a sturdy base. The complete frame assembly consists of a vice to hold a 7.06cm cube mould and two studs threaded at top and a hopper to feed the sample in the mould. This assembly is supported on four springs and has an in built rotating shaft which rotates eccentrically and thus imparts vibrations to the entire frame. A balance weight is an intergral bottom part of the frame. The centre of gravity of the assembly is brought to the centre of the eccentric shaft or within a distance of 25mm mould. The frequency of vibration is 12000 400 vibration per minute. Supplied complete with on 7.06cm cube mould with loose base plate, a time switch 0-5mins x 1min and certificate of vibration from a standard laboratory.

Spares : Set of Springs, Belt and Belt guard.

  VIBRATING TABLE

The Vibrating Table is used for compacting concrete cubes and cylinders.

Specifications : It is designed to carry a load of 140 kg. The apparatus consists of a motor fitted with a variable pitch pulley housed in a cabinet. The vibrations are imparted by means of off-balance masses rotating on a shaft of a vibrator clamped to the underside of the table top. The table top is 50cm x 50cm. and has stops along its edges to prevent moulds from walking off the table during vibration. A cross arm adjustable on a vertical rod at the center of the table is provided to hold the moulds while operating the table. The variable pitch pulley arrangement permits the frequency to be varied steplessly between a maximum of 3600 vibrations per minute. A speed regulation handle is provided for increasing or decreasing the frequency. A switch is provided for starting the motor, suitable for operation on 440 volts, 3 phase, 50 cycles, A.C.supply.

Vibrating Tables of table top size 75cm x 75cm as well as 100cm x 100cm are also available.

  VICAT NEEDLE APPARATUS

This instrument is used for determining the normal consistency and setting times of cement and 'A' Class limes.

Specifications : The apparatus consists of a metallic frame bearing a freely movable rod with a cap at top, one vicat mould, split type and glass base plate and one set of needles one each initial needle, final needle and consistency plunger.

  VICAT NEEDLE APPARATUS WITH DASHPOT

Same as above but in addition is fitted with a dash pos which facilitates gentle lovering of needles.

Accessories: Mild steel base plate 5 inches x 5 inches. Fulcrum mould, brass, 70mm 1.0 base dia x 60mm I.D. top dia, 40mm height