It is for the determination of the aggregate impact value and has been designed in accordance with IS-2386 (Part IV). The study construction consists of a base and support columns to form a rigid frame work around the quick release trigger mechanism to ensure an effective free fall of the hammer during test.

200/Tones- hydraulic electrically-cum-hand operated, with 3 pressure gauges 0-200 tones, 0-100 tones, and 0-50 tones capacity complete with Flexure Test Attachment. MODEL DM/TG.
Speed Control : The machine is fitted with a hand wheel control which enables the rate of application of load to be varied. The machine is equipped with facilities for hand pumping in case of power failure.
Electrical :This automatic closing of the machine shall protect the machine for overload resulting in ultimate damage. Electrical Relays are also incorporated in the electrical pumping unit, so that in case of breakdown of power supply the motor will not restart unless the starting switch is operated.
The machine is also provided with a Hand-operated Pumping Unit, so that  the unit can be operated Manually.

Laboratory Concrete Mixer is laboratory type & is electrically operated.  The counter balance drum is easy to tilt with 1½ to 2  cu .ft. mix. The total drum volume is, however, 3 cu. ft. Mounted on a sturdy rubber  tyred stand; the drum is mounted for end discharge and equipped with 1/2 h. p. electric motor, suitable for operation on 220 volts. A. C. single phase.

This is intended for non-destructive testing of the quality of concrete in finished structures. In testing, the rebound number is measured, which is dependent on the strength of the mortar (concrete with coarse particles) close to the surface. Since the strength of the mortar as a rule determines the strength of the concrete, the rebound number gives an indication for the strength of the concrete. The results obtained are ±15% of the actual compressive strength. As the test does not destroy the specimen, the curing process continuing after setting of concrete can be followed up accurately.

As per IS-516
-Steel cube Mould 2.78 (7.06 cm) for vibrating machine complete with base plate.
-Cast Iron Cube Moulds complete with base plate Size 5cm x 5cm x 5cm.   
-Cast Iron Cube Moulds complete with base plate Size 10cm x 10cm x 10cm.
-Cast Iron Cube Moulds complete with base plate Size 15cm x 15cm x 15cm.
-Cast Iron Cube Moulds complete with base plate Size 20cm x 20cm x 20cm.

Cement Mortar & Concrete Permeability Apparatus
(100 mm DIA. Three Cell Model).
IS : 3085-1965.It consists of three sets 100 mm DIA cell mounted on a single control panel for testing independently three specimens 100 mm DIA x 100 mm high.
The equipment comprises the following :
-Three permeability cells for 100 mm dia specimen. Each cell consists of a metal cylinder with a ledge at the bottom and flanged at the top, one removable cover plate and a funnel. Made of Gunmetal.
- A control panel with three independent control circuits for three permeability cell. Each control circuit consisting of a water reservoir, graduated gauge, glass tube, air inlet valve, pressure regulator, pressure gauge 0-15 kg/cm an air bleed valve, a drain crook for water reservoir and a shut-off valve for the permeability cell. A common air inlet for the three units is provided for connecting to the air compressor.
( 150 mm dia. Single Cell Model).
IS : 3085-1965.The apparatus is CCA-58 but provided with a permeability cell for 150 mm dia x 150 mm high specimen.
The equipment comprises the following :
-One permeability cell for 150 mm dia specimens consisting of a metal cylinder with a ledge at the bottom and flanged at the top. One removable cover plate and a funnel. An air bleed valve is provided on the cover plate. Made of Gunmetal.
-A control panel fitted with a water reservoir, graduated gauge glass tube, air inlet valve, pressure regulator, pressure gauge 0-15 kg/cm, an airbleed valve, a drain cock for water reservoir and a shut off valve for the permeability cell.

Used for making cement concrete prisms or bars of square cross section for flexural strength test. Faces are machined flat to within ±0.02mm and inside dimensions to ±0.2 mm made of Cast Iron or Steel, supplied complete with base plate.
Size:
40 mm x 40 mm x 160 mm made of Cast Iron.
100 mm x 100 mm x 500 mm made of Cast Iron.
150 mm x 150 mm x 700 mm made of Cast Iron.
150 mm x 150 mm x 750 mm made of Cast Iron.
Tamping bar 25 mm square x 40 cm long.

Used to cast cylindrical cement concrete specimens for compressive strength tests. These moulds are made of cast Iron. They can be easily split into two parts. The internal diameter is finished to ±0.2 mm and height  within ±1 mm. Supplied complete with a base plate machined flat within ±0.02 mm.
Size: 100 mm dia x 200 mm high, Cast Iron.
        150 mm dia x 300 mm high, Cast Iron.
        300 mm dia x 600 mm high, Cast Iron.

IS-4031.With two glass plates and lead a transparent disc is screwed. The division of the scale on the rod weights. For indicating soundness of cement and limes. A brass cylinder mould split down one side and provided with two parallel indication arms.

IS-4031.For measuring changes in the length by a dial gauge graduated to 0.01 mm. The gauge is mounted rigidly in a measuring frame and has a recessed and which can be located upon a 6.5 mm diameter ball or other reference point in the specimen. Complete with a stainless steel standardization bar with 6.5 diameter balls mounted in the ends.

IS : 2386 (Part I)For determining the elongation index of coarse aggregate. It consists of a steel plate on which 8 steel pins are vertically mounted with specified distance in between. This assembly is mounted on a hardwood base.
 Tile Flexure Strength Tester. IS : 654-1962. For the determination of breaking load of clay roofing tiles.
The equipment consists of two bearing rollers and one loading roller all 40 mm dia. The centers of bearing rollers can be set at 250 mm or 270 mm. The loading is done through a double lever loading system.
Maximum capacity of the machine is 2 KN. Lever ratio is 1:12.
Supplied complete with 20 kg lead shot.

Confirming to ISS-7320. This apparatus used for the determination of workability of concrete where nominal size of aggregate does not exceed 38 mm. The apparatus comprises of a slump cone with foot pieces fitted on a base with wing bolts. A swivel carrying handle fitted with the base also serves as a datum for measuring the slump, when moved into vertical position perpendicular to the base. A graduated tamping rod is used both for compacting the specimen as well as measuring the slump of concrete.

IS : 2386
For determining the flakiness index of aggregate. It consists of a panel having accurately cut slots of different standard lengths and width.

For determination the workability of concrete provided the nominal maximum size of the aggregate does not exceed 38 mm. This is designed primarily for use in the laboratory but in suitable circumstances, it may also be used in the field. This test is more precise and sensitive and is particularly useful to concrete mixes of very low workability such as are normally used when concrete is to be compacted by vibration. Consists of two hoppers and a cylinder mounted on a rigid frame. The inside surfaces are machined smooth. The whole apparatus is furnished in hammertone spray. Complete with two trowels and a tamping rod.

The Flow Table consists of a brass table top 250 ± 2.5 mm dia mounted on a rigid stand. The table top is re-inforced with equally disposed ribs and allowed to drop through 12 mm by a ground and hardened cam. Complete with mould 100 mm base dia. 70 mm top dia, 50 mm high.

Supplied complete with an electric motor suitable for operation on 230 volts, 50 cycles, single phase A.C. supply.

Consists of a vibrator table resting upon elastic supports, metal post, sheet metal cone open at both ends, and a standard iron rod. The table is enquipped with an elecrically operated vibrometer mounted under it by an electric motor, both double ended shaft, working on 220 volts, single phase A.C. supply.

The steel cone is 30 cm high, with dia at the bottom 20 cm and at top 10 cm. A swivel arm holder is fixed to the base, into which is telescoped another swievel arm with funnel and guide sleeve. A graduated rod is fixed on to the swievel arm and at the end of the graduated armecords the slump of the concrete cone, and the volume of concrete cone
after vibration of cone in the pot. Complete with electrical accessories.

It is made of mild steel or brass. Faces mechined flat. Complete with base plate and stainless steel smooth reference points. Size 25mm x 25mm x250mm, effective gauge length (Gang of one / two/ three).

It is high pressure autoclave designed especially for conducting acceleraed soundness tests on Cement or the autoclave expansion tests. It is mounted in a sturdy supporting frame, and enclosed in a heat-insulated / metal housing which is attractively finished in hammertone paint. The top has a pressure regulator safety valve and pressure gauge. The unit attached to the side of the housing has power switches and pilot lights for controlling the electric heating unit.

For making tensile strength tests on cement briquettes. Suitable for tensile tests upto 1200 lbs. Hand operated. Automatic loading by lead shots. Double scale 100 lbs x 1 lb and 50 kg x 0.5 kg. Supplied complete with one standard briquette mould, 10 kgs of lead shots. Weight hanger and a set of weights comprising 4 ozs, 8 ozs, 12 ozs and 1 lb. 4 ozs directly to weight 100 ibs, 200 lbs, 300 lbs and 500 lbs and with a second set of weights comprising 125 gms, 500 gms and 750 gms directly to weight 50 kg, 200 kg and 300 kg.

For making cement briquette for tensile strength on cement complete with base plate.

Made of steel, finished in dull chrome and with wooden handle.

weight 7.5 ozs. approximately. Best quality with hard wood handle.

Vibrator is mounted over coiled springs. Vibrations are by means of a revolvingshaft with an eccentric. Frequency 12000±400 vibration per minute. Centre of gravity of the vibrator, including the cube and mould is either at the centre of the eccentric shaft or within 25 mm below it. Easy assembling and dismantling of cube mould. Provided with belt guard and a time switch. Suitable for operation in 230 volts, 50 cycles, single phase A.C. Supply. Vibration Machine is supplied complete with one cube mould.

Timer range 0-60 min. The pointer is set and locked at the required timing period.

This apparatus is used for determination of the strain and deformatian characteristics of cement concrete cylindrical specimens of 150 mm dia x 300 mm long.
The compressometer consists of two frames for clamping to the specimen by means of five tightening screws with a hardened and tapered end. Two spacers hold the two frames in position. A pivot rod is adjustable. A dial gauge, fixed to a bracked to the top frame is used for taking deformation measurement. Supplied complete with dial gauge 0.01 mm x 12 mm in a wooden carrying case.

This is for the determination of lateral extension of 150 mm dia x 300 mm high cement concrete cylinders while testing them under compression. The extensometer consists of two movable frames pivoted at one end. A dial gauge measure, the lateral extension, and a removable spacer strip is for the initial setting of the dial gauge. Mouting of extensometer on the specimen is done with the help of screws. Supplied complee with a dial gauge0. 01mm. x 12mm

The new multiposition strain gauge is mechanical gauge designed and developed for maximum accuracy and versatility in making precise measurement in the field or in the laboratory. It features a light aluminium alloy frame and can be used for five different master setting of 5, 10, 15, 20, and 25cm. Readings can be made on a dial gauge having sensivity0.01 mm.

Consists of a metal box mounted on legs and fitted with a series of chutes of equal width which discharge the material alternatively in opposite directions into separate pans. The chutes of the ritfle are steep enough to allow rapid flowing of the material.

For determination of resistance to wear by attrition. Two iron cylinders 77/8" dia 133/8" long with dust and water-tight covers, mounted on a shaft with their axis inclined at 30 deg. to the axis of rotation of the shaft. Rotation speed is 30-33 r.p.m. Driven by 1 h.p. three phase 440 volts, A.C. Electric motor.

For determination of resistance to wear of coarse aggregate by abrasion. A rolled steel drum totally closed except for removable dust-tight cover is connected to stub shaft and mounted on steel frame to allow rotation about its axis in a horizontal plane. The drum is rotated by one h.p. electric motor. A heavy duty speed reducer coverts the motor speed to required drum speed of 30 to 33 r.p.m. Inside the drum is provided a steel shelf which can be easily replaced when worm out due to repeated abrasion tests. Supplied with 12 abrasive charges 1 7/8" dia and Revolution Counter fitted to the rotating shaft.

For testing the aggregates for resistance to abrasion in accordance with the standard peocedure laid down in BS : 812. The apparatus consists of a metal disc which revolves in a horizontal plane on a vertical shaft. A suitable attachment for holding the specimen with its axis vertical and its lower end pressed with a prescribed pressure against the surface of the disc (the distance from the centre of specimen to the centre of shaft being 25 cm) is provided. A convenient funnel for feeding sand continuosly upon the rotating disc is also provided. The machine is fitted with a 1/4 h.p. electric motor, driven through a reduction gear to 28-30 revolutions of the disc per minute. Suitable for operation from 220/230 volts, single phase, A.C.supply.

The crusher has maganese steel jaws. The opening of the jaws is adjustable from 20 mm to 6 mm. The capacity is 200 kgs. per hour. The crusher is made of cast steel. The jaws have forward and downward strokes with sufficient rocking action to throw crushed material down to the jaws. A hopper is provided at the top for pouring material. The crusher is supplied complete with 3 h.p. electric moror, triple V-belt pully drive and mounting frame.

The Laboratory Pulveriser is a disc type grinder designed for grinding virtually any mateial to produce a fine mesh sample in one operation. The pulveriser is adopted for use in assay offices, metallurgical, aggregate, quarry, chemical and industrial laboratories. It is a self contained grinder furnished with rotating disc having a planetary movement in verticle plane. This feature gives added life to the waring parts and delivers a product of uniform fineness. The pulveriser will reduce a 1 pound sample of quartz type material to 100 mesh or above in 1 minute. Maximum feed size 6 mm.

Vibrator internal, laboratory type. Use in Vibrating concrete test cylinders and beams. It is widely used in making concrete products in experimental work and in small scale construction projects. The vibrator is electrically driven, fitted with 350 mm long x 25 mm dia vibrating pin having a bullet type nose. Approx. three ft. long flexible shaft. Vibrating speed is 10000 per minute.

The tile sample is pressed under a specified load against a grinding path, strewn evenly with an abrasive power revolving at the rate of 30±1 revolutions per minute. The wear of the tile is measured using a thickness gauge.
The abrasion testing machine consists of a replaceable grinding path fitted on a disc rotating about its vertical axis. The rotating disc and the grinding path are enclosed by a circular tray. A bracket holds the specimen. The loading is by a counter balanced lever. A funnel is provided to facilitate charging the grinding path with abrassive power.
Supplied complete with automatic pre-set revolution counter and one 7.5 kg. weight but without abrassive power and thickness gauge. Suitable for operation on 415 volts, 50 cycles, 3 phase A.C.supply. With dial gauge 0.01 x 25 mm

Proper compaction of cement concrete while casting specimens for compression testing is desirable to achieve a better and more consistent mixture. Vibrating table is ideally suited for this purpose. The table to is 500 mm x 500 mm and has stops along its edges to prevent moulds from sliding off the table during operation.
The maximum load capacity is 140 kg. The variable pitch pully arrangemant permits the frequency to be varied steplessly between 600 cycles/sec. and 430 cycles/sec. Suitable for operation 415 volts,3 phase. 50 Hz. A.C. supply.

For moulding of three standard square sectioned specimens of 40 mm x 40 mm x 160 mm size of portland and pozzolana cement mortar for the determination of transverse strength.

For carrying out transverse strength tests on 40 mm x 40 mm x 160 mm mortar specimens. The equipment consists of a motorised load frame, with a constant rate of strain to supply load on the specimen at the rate of 4 to 6 kg/minute. For measuring the load, a 4 KN proving ring is attached to the cross head of the load frame.

For mixing of Cement and Pozzolana Mortars for making different types of test specimens in the laboratory.

For concrete containing nominal maximum size of aggregate of 38 mm. The apparatus consists of a measuring bowl of 0.005 cm capacity. A flanged conical cover assembly fits over the bowl and can be sealed with clamps keeping a rubber gasket in between. A water inlet valve with a spray tube and an air bleed valve are fitted on the conical cover assembly. A pressure gauge is mounted on the top of the stand pipe. A hand pump is provided for the application of pressure

For the determination of specific gravity and water absorption of aggregate. It is made of G.I. wire-mesh approx. 20 cm dia x 20 cm high. Complete with handle.

It consists of the following :
(i) A drum of welded steel 300 mm dia x 340 mm long supported on heavy duty ball berings.
(ii) An air tight cover to close the 100 mm wide opening of the drum.
(iii) A reduction gear driven by a motor which rotates the mill at 28-30 rpm,
(iv) Abrasive charge consisting of 12 steel balls 19 mm dia.
(v) An revolution counter.
Suitable for operation on 220 volts, single phase, 50 Hz., supply.

Consists of both end open cylinder, base plate, a plunger handle and tamping rod.
7.5 cm diam. for 2 mm to 6 mm aggregate.

For carrying out transverse strength tests on cement concrete flooring tiles.

For the determination of permeability to water of pozzolana cement mortar and cement mortar with and without the addition of integral water proofing compounds.

For the determination of permeability of cement mortar and concrete specimens of 100 mm diameter and 100 mm high either cast in the laboratory or obtained by cutting out cores from the existing structures.