Yesha Lab Equipments

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 reached 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.

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we are engagged for Rebound Hammer in Chennai.

Special Features :

· Internal Focusing fitted with horizontal circle

· Sensitive bubble is mounted on the side of the telescope

· Strong

· Compact

· Light in weight

· Finest optical quality

· Excellent folding mirror

· Observer can read the bubble with ease

• Application specific design
• Accurate measurement
• Low maintenance

• Operatable on single / three phase, 220/440 volts, 50Hz A.C.

We work to please our valuable customers with our excellent quality product range. Matching with the customer’s requirements, we are offering a large assortment of Thickness Gauge as per client requirement. Our product is available as per the industry standards and known for their reliability. They are developed, processed and tested by the team of highly knowledgeable and experienced professional at advanced units. This Circular Saw is highly demanded in the market for their best quality and cost effectiveness.

Features:

• Long functional life
• Efficient operations
• Uninterrupted performance

• Precise design
• High strength
• Accurate reading

As Per IS 2131, IS 9640

• 24 Hour cycle from time of mixing.
• Controlled 35oC or 100oC ±2oC Curing Temperature for concrete.
• Controlled 27oC ± 2oC Curing Temperature for grey cement.
• The tank has been designed to accommodate 150mm/70.6mm
• cube mould upto 36/72 cube mould and fully insulated, complete with a hinged lid, heater, thermostat and re-circulated pump.
• Provision of two removable racks allowing free circulation of water around each mould. The pump, drain valves and electrical equipment are housed in a compartment located at one end of the tank
• The Tank is heated by a immersion heater under normal conditions and refrigeration system for grey cement the temperature is controlled at 35oC or 100oC ± 2oC / 27oC +2oC, expect for the 15 minutes after immersion of the freshly made specimens
• Salient Features Curing Tank for 6/12 moulds of 150mm/70.6mm size Curing Tank for 12/24 mould of 150mm/70.6mm size

• Temperature Control Type: Automatic
• Max Control Time: 9999 min
• Heat Power: 10 kW
• Power: AC380V, 50Hz

• The procedure, as recommended in various standards, is for determining the quantity of water required to produce a cement paste of standard consistency
• The apparatus includes one of each:
• Vicat Mould
• Glass Base Plate
• Initial Needle (in Plastic Case)
• Final Needle (in Plastic Case)
• Consistency Plunger (in Plastic Case)
• Mild Steel Base Plate
• Vicat Method, Split Type, with Clamping Ring

• Compact design
• Sturdy construction
• Available in standard sizes
• Available in wooden boxes
• Abrasion resistant

• Rated power: 160W
• Vibrating frequency: 90times/min.
• Amplitude: 203mm ± 1.0mm
• Self-control time: 30s / 1 time
• Accessory box of SD-II, include:
• Testing tube: 32 ± 0.25mm inside diameter with height 420 ± 0.25mm 4PCS
• Piston: 1PC

• It consists of a vertical pillar mounted on a base provided with levelling screws
• The head, together with dial plunger rod and cone (or needle) slides on a pillar and can be clamped at any desired height
• A rack & pinion and pointer assemble provides fine adjustment of needle or cone tip to sample
• It incorporates a clutch mechanism which makes reading of penetration and subsequent resetting a simple and accurate operation
• The dial is graduated in 400 1/10 and the millimeter sub-divisions and the needle pointer against figures makes easy reading
• Supplied with bitumen penetration needle, ring weight one each 50 gms and two sample container

• Superior performance
• Incorporates a clutch mechanism
• Durability

Optional: Three Gang also available
As Per IS 2720 (Part XV), IS 12287, BS 1377, ASTM D 2435
Consolidation test is un-dimensional test considered extremely important in soil mechanics. Sample taken from adjacent areas of a single site show differential settlement even when
tested using same techniques. Soil of similar strength may show varying consolidation.
Samples are very carefully prepared and vertical settlement of the specimen in saturated or drained conditions carefully recorded when known load is applied. SPECIFICATION: The standard outfit comprises of the following items. Loading unit, maximum capacity
20kg/cm.sq. Having a loading yoke connected to a lever arm with a counter balancing adjustment and having a lever ratio of 1:1 the whole assembly being mounted on a sturdy
steel frame stand. The loading unit is so designed that it can be used for consolidation cells of different diameters as well as different dia. floating ring type consolidation cells. Fixed
ring type Consolidometer (Odometer) cell assembly for testing 60mm dia. x 20mm thick specimen comprising: Fixed ring for specimens 60mm dia. x 20mm thick with guide ring. Top and bottom porous stones for 60mm dia. specimen. Perforated pressure pad, Channeled
base with water inlet and gasket Flanged water jacket, water reservoir with plastic tube and pinch cock. Set of weights to give a pressure of 10kg/cm.sq. On 60mm dia. specimen,
comprising : 7 nos. 0.05 kg/cm .sq., 5nos. 0.1 kg/sq.cm., 6nos. 0.5kg/sq. cm., and 5 nos. 1.0 kg/sq.cm. Supplied complete as above but without dial gauge. ACCESSORIES : Dial gauge
0.002 mm x 10mm. Extension piece, 40 mm long, consolidation test forms pad of 50 for
one dimensional consolidation. OPTIONAL EXTRAS : Varying head stand pipe, 50cms. Long with mm. Scale. Fixed ring type of Consolidometer (Odometer) cell assembly for
50mm. dia. x 20mm thick specimens , complete with fixed ring guide ring. Pair of porous stones, perforated pressure pad, channeled base, gasket and flanged water jacket. Set of weights to give a pressure of 10kg/sq.cm. on 50cm. dia specimen. Fixed ring type of
Consolidometer (Odometer) cell assembly for 70mm dia x 20mm thick specimens, complete with accessories as above. Set of weights to give a pressure of 10 kg/sq.cm. on 70mm dia.
specimens. Fixed ring type of consolidometer (odometer) cell assembly for 100mm dia. x

• Compact design
• High accuracy
• Long service life

• Temp. range from ambient 5° C to 60°
• Controller with /- 0.5° accuracy
• Humidity range from atmospheric humidity to 95 % controlled by dual display microprocessor based digital temp
• Controller (dry and wet bulb method) with 3 % RH