Code: CECT301

These are two pillar type load frames. Two solid pillars are vertically fixed to a sturdy base and at other end is fixed across-head. The height of the cross head is also slightly adjustable. A lead screw passes through the center of cross-head. To the lower end of this lead screw is fixed upper platen with a spherical seat for self alignment. At the center of the base plate is fixed a jack, on the top of which the lower platen with the help of a centering pin is kept. The distance between the upper and platen is variable by means of the leas screw. A spacer block is also supplied with the load frame. This spacer block which can be fitted on the top of the jack and below the lower platen by means of centering pins helps reduce the distance between the two platens. The platens are well machined, polished and hardened. The lower platen has concentric groves to centrally place the specimen. A dust cover for jack is supplied to prevent and dust going in the jack.

Code: CECT306

In these load frames "C" channels are used, they are welded at the top as well as bottom and with stand high loads. A hydraulic jack is fitted lower platen and spacer block with the help of centering pin. A lead screw passes through the top of the frame. To the lower end of this leads screw is fixed with the upper platen with spherical seat for self alignment. The platens are accurately machined hardened and polished. The lower platen has concentric groves to correctly place the specimen.

Note: The platens are normally circular in shape, but on special request square platens or rectangular platens can be supplied.

Code: CECT311

This is a pumping unit double action type with plungers of different diameters. The plunger having larger diameter pumps larger quantities of oil into the jack. Whereas the plunger having smaller diameter pumps oil in smaller quantities but effortlessly these plunger are very accurately machined and fit in their respective cylinders with zero clearance, no seals are used. Special non-return valves are fitted in the pumping unit to ensure correct level of Hydraulic oil. On the front is fitted a release valve, which is to be tightened while applying pressure and loosened to release it, Provision is also made to fix a pressure gauge on the pumping unit, These pumping units are connected to load frame by means of pressure pipes.

Code: CECT316

This is a separate console housing an oil tank, electric motor, relay etc. Inside the oil tank are mounted two pumps which are worked with the help of a cam rotating inside the tank. The cam is rotated by the electrical motor and belt. Above the tank is fitted a hand pump. All plungers are accurately machined and no oil seals are used. Special non-return valves are fitted in the pumping system for trouble free long service, A dip stick is provided to know the oil level in the tank. A drain to remove oil is fitted at the base of the tank. The pumping unit has on its front panel a slow-fast lever to control the rate of loading, a release valve and a slit to enable a rod to be inserted in the hand pump to operate the pumping unit manually. A pressure gauge is fitted in front at a convenient angle. The pressure gauge has 200 divisions for its full capacity, Inside the pressure gauge is fitted a micro switch. This micro swich automatically cuts off electrical supply to the pumping unit on reaching full capacity of the pressure gauge. A red dummy pointer is fixed on the cover glass of the pressure gauge to record maximum load at the failure of the specimen. The pumping unit works on 230 volts A.C. or 415 volts, 3 phase supply. This pumping unit is connected to the load frame by means of pressure pipes. Additional pressure gauges (maximum 2 Nos.) of lower capacities with isolation valves can be fitted on the pumping unit.

Note. Digital versions of electrically operated Compression Testing Machines can also be supplied. The digital versions have 0.5% accuracy. Various Models of Compression Testing Machines are avaiLable listed in the following table.

Code: CECT321

ASTM: C 403

It is used for finding out the rate of hardening of mortars sieved form concrete mixtures, by means of penetration 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 16 mm sq. are provided. The penetration resistance is measured by the force exerted to penetrate the mortar by 25 mm and is indicated by a sliding ring on the stem, which is graduated. Needle shanks are marked at every 12.5 mm. Compete in a wooden carrying case.

Code: CECT326

Code: CECT331

ASTM: C-403

For fast evaluation of the initial setting of concrete. It can be used on light- weight concrete, special roof deck mixes and concrete additives.

Specification: Consists of a needle having face area 3/10 sq. cm. and graduated at a distance of 25 cm. The needles point is an integral part of barrel which houses a calibrated spring. The spring is confined in a sleeve. The resistance offered by the concrete mortar is shown on the direct reading scale with a marker ring which holds its position when released. Scale range is 0-50 kg/cm when the penetration resistance reaches a value of 35 kg/ cm2 the concrete is assumed initially set. Supplied complete in wooden carrying case.

Code: CECT336

As Per IS: 269 1950, B2 12

Used for making tensile strength test on cement briquettes.

Specifications: The Instrument is suitable for tensile tests upto 1200 Lbs or 540 kg. It is hand operated, with automatic loading by lead shots. Two calibrated scales 100 Ibs X 1 lb. and 50 kg. X 0.5 kg. are engraved. Supplied complete with one brass briquette mould with base plate, lead shots 15kgs, weights to weigh 50kg., 100kg. 150kg. and 200 kg. Spares: Lead shots & Briquette mould brass with base plate.

Code: CECT341

As Per IS: 269 1958, B2 12.

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-switchfitted 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.

Code: CECT346

ASTM: C190

Specifications: The instrument has a capacity of 1200 lbs. And is hand operated. Automatic loading by lead shots. Double scale of 100 lbs X 1lb and 50 kg, 150kg and 200kg. 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.

Code: CECT351

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 rest against the surface of the concrete products. The Greater the resistance on 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 a 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 richard 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

Code: CECT356

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 considerably 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.

Code: CECT361

As Per IS: 3085.Permeability Apparatus (Single Cell Model)

One of the durability tests of concrete is to determine permeability of water through specimen. Permeability apparatus is used for determining the permeability of cement mortar and concrete specimens of 15 cm cubes cast in the Laboratory.

Specifications: The concrete permeability apparatus comprises of a brass/gunmetal cell of squares crosssection mounted on a stand and a pressure chamber is connected to the cell through copper tubing and Tconnector mounted on the stand with sleeve packed vale and rubber hose pipe with end connections. The cell assembly consists of one base plate, one metal funnel and one top plate, the pressure chamber is fitted with a pressure regulator which helps in regulating the pressure from 0-15kg/cm sq. gauge is for indicating the pressure in the cell. A foot pump and a pressure tube is supplied to develop pressure in the chamber. The apparatus is supplied with a measuring cylinder 500 cc to measure percolated quantity for water. Pressure can also be applied by a pressure air line or by a compressor.

Code: CECT366

(Three Cell Model)

Same as above but supplied with three individual cells with stand. Three pressure gauges for indicating pressure in each cell are supplied apart from the main pressure gauge which indicates pressure in chamber.

Code: CECT371

(Single Cell) Same as above but suitable for 150 mm dia X 150mm high sample.

Accessories: 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.

Code: CECT376

As Per IS: 1727-2645.

For water proofing of concrete admixture and special water proof cements are used. Water proofing of these compounds, is established by measuring permeability of standard mortar. Specimen with or without such water proofing compounds. Permeability apparatus is used to determine permeability to water of cement mortar specimens with or without water proofing compound. 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. The regulator has two pressure gauges, one for indicating the pressure in the chamber (0-10.5kg/sq.cm.) and the other for indicating the testing pressure (0-7kg/sq.cm.). The pressure chamber is connected to the cells with pressure hoses and with couplings. This pressure chamber is fitted with schrader valve. Pressure is applied to the pressure chamber with help of a foot pump and rubber hose which are supplied with the instrument.

Code: CECT381

(Six Cell Model) Same as above but six cells mounted on a stand.

(Twelve Cell Model) Same as above but twelve cells, mounted on a stand. Accessories: Specimen casting mould cast iron with base plate 100 mm dia X 50 mm height. Note: Where larger number of cells are used a suitable compressor in place of pressure chamber is recommended. This compressor can be supplied at extra cost.

Code: CECT386

As Per IS: BS ASTM C78 Flexural tests concrete beam have their own importance in concrete road constructions as well as Building constructions. Normally concrete beams of sizes 10cm x 10cm x 50cm or 15cm x 15cm x 70cm are tested fro flexural strength.

Specifications: The machine consists of a hand operated load frame. The lower platen has two rollers, the distance between the rollers is 600mm, white it is 40mm for beams of size 100mm x 500mm. The upper platen has also a pair or rollers whose distance is adjustable. It is 200mm center to center fro 150mm x 150mm x 700mm size beam and 133mm for 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 100KN and a 150mm dia. pressure gauge-100KN x 1KN is fitted on the machine. Since this is a hand operated light weight machine, it is useful for field Laboratory also.

Code: CECT391

(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 0-100KN x 1KN, 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.

Code: CECT396

As Per IS: 654, 1257 & 1706Tile Flexure Testing Machine

Unit for finding flexural strength of clay roofing tiles and Cement flooring tiles. Flexural load is applied 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 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.

Accessory: Lead shot supplied in packs of 20Kgs.