Concrete Lab Equipment

Tensile Strength Tester

SPARES AND ACCESSORIES: Brass briquette mould for making cement briquette for tensile strength on cement, without base plate. Base plate machined flat to + 0.005 inch. Brass briquette mould three gang complete with base plate

PULVERISER

SPECIFICATIONS: 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 machinate 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 Pulverize has a capacity of reducing about half of a kilogram of a quartz type sample to 100 mesh in a about a minute. The Pulverser is supplied complete with a 3 H.P motor, a starter, a “V” belt pulley drive and mounting wired for 440V, 3 Ph, 50Hz LABORATORY PULVERSER: Disc Diameter - 175mm. Maximum Feed size - 6mm. Yield - 250gms./min. Size of Finished Product -100mesh.

POZZOLANA CEMENT MORTAR PERMEABILITY APPARATUS

SPECIFICATIONS: The mortar permeability apparatus comprises three brass/gun-metal cells mounted on a stand and a pressure chamber with a pressure regulator. The cell can accommodate 100 mm dia X 50 mm high specimen. Each cell assembly consists of one base plate. The base plate has one outlet for water and is recessed to hold the specimen in place with a ring washer in between. The top plate has an inlet for water and a suitable connector for the application of pressurized water in the cell. The mould and collar are clamped between the base plate and the top plate with the help of four tension rods and nuts. The cells are mounted on a stand. The pressure chamber is fitted with a pressure regulator which helps in regulating the pressure from 0-7kg/sq.cm.

NEEDLE VIBRATOR

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 fro 230V. Sph. 50Hz.

ROLL CRUSHER (SMALL)

The drive is by a heavy motor, through V belts, to a set of gears and further to the rollers.

TENSILE STRENGTH TESTER ( ELECTRICALLY OPERATED )

SPECIFICATIONS: • The instrument employs a friction- free, accurate, double lever system, the load being applied by means of sliding weight on the top lever. • The capacity of the unit is 900 kgs. After fixing the briquette in the jaws, the machine is switched on. • The sliding weight slides over the calibrated lever thus applying tension to the specimen. • A micro-switch fitted instantly stops the machine on failure of the briquette and on failure the tensile load is accurately read to 0.5 kg. by means of a marker provided on the sliding weight. • The machine can be made opratable for subsequent test only after the sliding weight to its zero position. • Suitable for operation on 230 volts, 50 cycles, single phase, A.C. supply. • Complete with one brass briquette mould and one base plate.

Concrete Permeability Apparatus

SPECIFICATIONS: • Compressor with pressure gauge 0-20 kg/cm sq. with automatic pressure valve and pressure rubber hose. • Suitable for 440 volts A.C. three phase. • Specimen casting mould C.I. for 100 mm dia X 100 mm high cylinders. • Specimen casting mould C.I. for 150 mm dia X 150 mm high cylinders. • Specimen casting mould C.I. for 150 mm cubes. • Blow stove ½ litre capacity. Resin, Bees wax, Wire brush, Chissel, spare glass cylinder 500 cc capacity.

ROLL CRUSHER (LARGE)

• This comprises of two hardened alloy steel rollers with 150 mm, faces and 250 mm. diameters.

Tile Flexure Testing Machine

SPECIFICATIONS: 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 2720mm 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 of 200kg per minute there by, starting loading the specimen. Arrangement is made such that loading automatically stops when specimen breaks. Supplied without lead shots.

THICKNESS GAUGE

SPECIFICATIONS: 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 2720mm 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 of 200kg per minute there by, starting loading the specimen. Arrangement is made such that loading automatically stops when specimen breaks. Supplied without lead shots.

Tile Abrasion Testing Machine

SPECIFICATIONS: The machine consists of:- 1. A disc rotating at a speed of 30 rpm in a circular tray. 2. A bracket is provided to hold the specimen. 3. A counter balance lever loads the specimen. 4. Load applied is 30kgf. 5. A funnel is fitted to evenly spread abrasive powder on the grinding path. 6. A pre-set counter automatically stops the machine after 22 revolutions. 7. This counter is re-adjustable. 8. The machine works on 440 volts AC, three phase electrical supply. 9. On request machine to operate on 230Volts A.C. supply can also be supplied.

Integral Type Hydraulic Jacks Capacity

DESCRIPTION: These are hydraulic jacks with integral pumping unit. The hydraulic pressure gauge is of 15cm dial 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 1000Kn & 5000KN capacity can be supplied with two speed pumping units. These jacks have lift of approximately 200mm.

Pumping Units

SPECIFICATIONS: The special features of pumping units is that the plungers of the pump have tolerances and no seals are used in the units and special type of non return valves as against traditional ball valves are used, which gives much longer trouble free service. Electrical Pumping Units work on 230Volts A.C. or 440 volts A.C.3 phase depending upon their capacity and these can be operated by hand in case of power failure. The front panel accommodate pressure gauge, on/off switch, slow fast lever to control the rate of loading and indicator lamps. Further in electrical units a micro switch fitted in the pressure gauge and a connected to a relay automatically cuts of the power supply to the unit when gauge capacity is reached. A dummy pointer to record maximum load applied is fitted on the cover glass. In hand operated pumping units, two plungers of different diameter are used. The plunger with larger diameter pumps oil at faster rage and is used for initial loading. Further load is easily applied by the second pump which has a smaller diameter plunger, The lever for operation of the pump is sufficiently long to minimize efforts and these units are suitable for site use.

Hydraulic Jack Assembly

FLEXIBLE PIPES: High Pressure hoses for the hydraulic jacks can be supplied at extra cost. These pipes are available in 1 meter length with end connections. Set of platens for self aligning action.

Hydraulic Jack Central Hole Type

SPECIFICATIONS: The hydraulic jack has a 25 mm diameter hole going through the center. It is designed for dual direction and had 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 500kg.

Shrinkage Bar Mould (two Gang)

SPECIFICATIONS: The mould, which has 25mm x 25mmx 250mm. 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 It has compartments assembled on a angle base plate.

Shrinkage Bar Mould Three Gang

SPECIFICATIONS: The mould, which has 25mm x 25mmx 250mm. 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 It has three compartments.

Slump Test Apparatus

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 mm, is also supplied.

Shrinkage Bar Mould (FOUR Gang)

SPECIFICATIONS: The mould, which has 25mm x 25mmx 250mm. 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. It has four compartments.

Sand Absorption Cone And Tamper

SPECIFICATIONS: The Equipments comprises of a conical metal mould 1.5inch 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.

KELLEY BALL PENETRATION APPARATUS

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.

VE BEE CONSISTOMETER

Specifications: the equipment consists of: A vibration 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 at its end a plastic disc is screwed. The divisions 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 600 mm long, rounded at one end.

AIR ENTRAINMENT METER

COMPACTION FACTOR APPARATUS

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FLOW TABLE

As Per IS: 6932 (Part VIII) This is used for determining the work ability 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 bras conical mould, 65mm I.D. at base and 40mm I.D. at top, height of the mould 90mm.

LENGTH COMPARATOR

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.002mm x 12 mm. 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 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 .0001inch x 1/2inch dial gauge at extra cost if indicated at the time of placing the order.

SHRINKAGE BAR MOULD

SPECIFICATIONS: It consists of:- • The mould, which has 25mm x 25mmx 250mm. • 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

JOLTING APPARATUS

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 center of the table. There is a projecting lug with a plane face on the ower 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 stop the machine after 60 jolts. Locating pins are provided for mounting the mould compartments on the table. The mould 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 (2) Apparatus for demoulding the specimen.

FLEXURE TESTING MACHINE (MOTORIZED) RILEM- CEMBUREAU TEST

SPECIFICATIONS: • It is a motorized, mechanical unit. • The speed is adjusted so that the load increase on the specimen is between 4 to 6kg/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 10mm. diameter and spaced 100mmapart, 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.

VIBRATING TABLE

SPECIFICATIONS: 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 sleeplessly between a maximum of 3600 vibrations down to 2600 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 1440 volts, 3 phase, 50 cycles, A.C. supply.

VIBRATING MACHINE

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 integral bottom part of the frame. The center of gravity of the assembly is brought to the center of the eccentric shaft or within a distance of 25mm below it. The electric motor drives the shaft of the frame and thus imparts required vibrations to the 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- 5minsx1min and certificate of vibration from a standard Laboratory.

HYDRAULIC JACK (HAND OPERATED)

MODEL Capacity in KN Approx. lift in MM Piston Dia in MM Pressure Gauge Dia Min. Div. on Pressure Gauge in KN

LABORATORY CONCRETE MIXER (MOTORIZED)

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 1/2h.p. electric motor. Suitable for operation on 220/230 volts A.C. Single phase.

Mortar Mixer

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 and 125 r.p.m.+ 10 r.p.m. respectively. The stand of the mixer has arrangement to raise for lower the bowl. Complete with stainless steel bowl of about six liters capacity. Suitable for operation on 230 volts,50 cycles, single phase, A.C. Supply.

VOLUME CHANGE APPARATUS

SPECIFICATIONS: 1. The apparatus comprises of one mould 100mm x 100mm x 250mm, 2. effective gauge length complete with base plate, 3. Four reference pins, 4. One length comparator frame, 5. One stainless steel reference bar with insulated grip, 6. one dial gauge, 0.02mm x 10mm.

BLAINE'S 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.

VICAT NEEDLE APPARATUS WITH DASHPOT

SPECIFICATION: 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.

CEMENT SAMPLER

This is a brass tube approximately 53cm long and 2.8 cm 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 die is drilled on the tube near handle. Total sample collected at one time is 300cm 3 approximately.

LE CHATELIER MOULD

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

GILLMORE NEEDLE APPARATUS

This instrument is used for determining the time setting of hydraulic cement. Specification: 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. 1 No. Glass base plate. Complete as above.

Laboratory Concrete Mixer