M. K. Instruments Khokhra, ahmedabad, Gujarat

The procedure, as recommended in various standards, is for determining the quantity of water required to produce a cement paste of standard consistency. The standard consistency is attained when the 10 mm plunger of the apparatus penetrates the material to a pre-determined depth under free-fall. A new sample is prepared and tested with initial and final needles in accordance with the procedure described in various specifications. Vicat Apparatus consists of a frame bearing a movable rod with a cap at top and a Vicat mould in the form of the frustum of a cone, (80+5)/70 + 5mm dia at the base,(70mm+5mm) /60 mm at the top and 40 mm high, and with a glass base plate of minimum 2.5 mm thickness with various models of Vicat apparatus as per standard specifications. Two models of Vicat Apparatus are offered Vicat Apparatus, IS: 5513 The apparatus includes one each of: Vicat Mould, Glass Base Plate, Initial Needle (in Plastic Case), Final Needle (in Plastic Case) Consistency Plunger (in Plastic Case) Vicat Apparatus with Dashpot, IS: 5513 This apparatus includes Dashpot to facilitate the gentle lowering of the moveable rod.

Concrete moulds are easily cast by using a tamping bar or a vibrating table. However air trapped in cement mortar paste can not be thus removed while casting cement mortar moulds. Easy method is to impart greater vibrating of lesser amplitude to the mould while casting This is achieved in a vibrating machine. Vibrating machine is used for the preparing of mortar cubes for the determination of compression strength of ordinary and rapid hardened Portland cement, low heat Portland cement, Portland blast furnace cement and high alumina cements. A specially designed Vibration Machine is used for vibrating the mix in moulds according to strictly controlled programmer at a frequency of 12,000 ± 400 cycles per minute. The Vibrator is mounted over coiled springs and the vibrations are developed by means of a revolving eccentric shaft. The center of gravity of the vibrator, including the cube and mould, is either at the center of the eccentric shaft or within 25 mm below it. The simple design of the machine facilitates easy assembly and dismantling of the cube moulds. The machine is suitable for operation on 230 V, 50 Hz, and single-phase, AC supply. Each machine is supplied with one cube mould.

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 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 crass arm adjustable on a vertical rod at the centre of the table is provided to hold the moulds while operating the between a maximum of 3600 vibrations down to 2600 vibration per minute. A speed regulation handle is provided for increasing or decreasing frequency. A switch is provided for starting the motor. Suitable for operator on 440 Volts, A.C. Three Phase, 50 Cycles. Table top size : 50 cm x 50cm Table top size : 75cm x 75cm Table top size : 100cm x 100cm

This apparatus provides a method for the compaction of soil samples in the determination of dry density/moisture content relationship, the determination of unconfined compressive strength of stabilized soil and for CBR tests. This also useful for compacting concretespecimen in cube and beam moulds Electrically operated fitted with Motor for vibration The Hammer Plate will be of approx. 95mm dia x 10mm thick and or 140 x 140mm square. Used for compaction of test specimen. The vibratory Hammer is mounted on two guide rods; one on either side of the hammer. A mounting head is fitted to the vibratory hammer to allow a surcharge of 10kg to be mounted to the vibratory hammer

Useful for specific gravity test by removing air voids from the Bitumen Mix. Oil Sealed Rotary High Vacuum Pump capacity 50 Ltr/min. complete with 0.25 HP- 1 Phase- 220 V- CROMPTON Make Electric Motor. Ultimate Vaccum : 0.05 mm of Hg. Complete with Non-Return Valve, Belt guard and vaccum gauge with regulator.

The extractor frame is used for taking out soil samples compacted or undisturbed, from 100mm dia and 150mm dia cylinders such as Core Cutters, Proctor moulds, C.B.R. moulds etc. SPECIFICATION : It consists of a 50Kn capacity hand operated, hydraulic jack mounted on a suitable frame. Two plungers, one for 4”/100mm dia and the other of 6”/150mm dia moulds are supplied Height of thrust plate is adjustable. ACCESSORIES : Set of plungers adaptors and thrust plates for 38mm, 50mm and 75mm dia specimen.

This dual purpose oven is designed to determine the loss in weight of bitumen and flux oils (Loss on Heating test) and the effect of heat and air on asphaltic materials (Thin Film test). The unit is heavily insulated and has a double glass door for viewing the test chamber thermometer and samples. Temperature is controlled at 163° C ± 1° C by means of a variable temperature controller and thermostat. Two rotating platforms are supplied with each oven: One accepts 9 standard penetration cups for the loss on heating test, the other accepts two 140mm diameter test pans for the thin film test. The platforms are rotated at 5 to 6 rpm by an external motor. Chamber dimensions 350 x 350 x 350mm (length x width x height)

The Thickness Gauge or Flakiness index of aggregates is the percentage by weight of particles whose least dimension (thickness) is less than three-fifths (0.6 times) of their mean dimensions. This test is not applicable to sizes smaller than 6.3mm. It consists of a frame with sliding panel with accurate slots of different standard width length, the complete assembly is chrome plated or powder coated.

Used to measure irregularities in road pavement. Made from steel channel or Alluminium Alloy. 3 Meter Length. Complete with measuring wedge.

It is used to determining the viscosity of fuel oil and lubricating oil (thin and thick). The unit consists of stain less steel bath oil cup that centrally placed in water bath. The bath has a lid, which contains a water-cooling tube. Two handles with two starrier blades, the thermometer soaked and a straight heater, stirring is done by turntable arrangements. Operates on 220 volts AC 50 HZ.

Used to determine grade of bitumen. The penetration tests determine consistency of bitumen for the purpose of grading. Depth in units 1/10 of millimeter to which a standard needle having a standard weight will penetrate vertically in a duration of five seconds at a temperature of 250C determines penetration for gradation. Two Models. Hand Operated and Electrically Operated. Hand Operated Model: It consists of a vertical pillar mounted on a base provided with levelling screws. The head, together with dial plunger rod a cone (or needle) slides on a pillar an can be clamped at any desired height. A rack and 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 subdivisions and the needle pointer against figures makes easy reading. Supplied with a bitumen penetration needle, ring weight One 50gm, two sample containers. Electrically Operated Model: Bitumen Penetrometer, Electrically operated model is provided with Automatic Digital Timer and electrical arrangement to carry out the test without needle of stop watch and with great ease and accuracy.

Base has cleats on its underside to help dig into the ground surface Positive clamping of slump cone to the base while filling and rodding the concrete A combination swivel carrying handle also doubles as the datum making the conventional and somewhat awkward measuring procedure of using a foot rule and a datum bar, a thing of the past Supplied complete with base plate, having cleats and swivel handle This test is considered suitable for cohesive and plastic mixes of concrete containing aggregate smaller than 50 mm. The slump cone is filled with freshly mixed concrete and is tamped with a tamping bar in three or four layers. The top of the concrete is leveled off with the top of the slump cone, the cone is lifted vertically up and the slump of the sample is immediately measured.`

20cm Dia Brass Frame Sieves 30cm Dia G.I. Frame Sieves 45cm Dia G.I. Frame Sieves

Carries upto 7 sieves of 150mm or 200mm diameter. The shaker is driven by a ¼ H.P. Motor through a reduction gear immersed in oil. The sieve table does not rotate but is inclined from the vertical axis and the direction on inclination charges progressively in clockwise direction. If the stop pin below the table is removed, the shaker can have a rotary motion. In addition to this gyratory motion of the table, there is an upward and downward movement ensuring that each square cm of the sieve is utilized. A pair of rods and a holder are supplied. The holder can be fixed on the top of the upper most sieve, and thus the sieve set in firmly held. Suitable for operation form 230 V, 50 Hz Single Phase A.C. Supply.

Shrinkage limit is the maximum water content at which a reduction in water content does not cause an appreciable reduction in volume of the Soil Mass. At shrinkage limit, on further reduction in water, air enters in to the voids of soils and thus keeps the volume constant. The apparatus can be used to determine shrinkage limit and to calculate other shrinkage ratio, shrinkage index and volumetric shrinkage. Specification : Set consists of one each :- Porcelain evaporating dish Shrinkage dish Glass cup Perspex plate with three metal prongs Flexible spatula 100mm Glass cylinder 25ml x 1ml, supplied without mercury

Hand Driven Operated ASTM C 151 also specifies the use of shrinkage bar moulds for the determination of soundness. Length Comparator listed in the concrete section determines the change in length of the specimen. Two models are offered. One is provided with stainless steel smooth reference points and the other is provided with knurled and threaded reference points. Both the models are available as single mould and multiple mould compartments. Each mould is supplied complete with base plate and two reference points per compartment of mould. Mould size: 25 x 25 mm section and 250 mm effective length (Distance between two inner-most of the reference points) The models are available in three kinds of apartments i.e. One, Two, Four with smooth and knurled threaded reference points. Shrinkage Bar Mould - Double Gange Shrinkage Bar Mould - Tripple Gange Shrinkage Bar Mould - Four Gange Optional Extra:- Set of 20, Smooth Reference Points Set of 20, knurled and threaded reference point

The separation of modifier and bitumen during Hot storage and cold static condition is evaluated by comparing the ring and ball softening point of the top and bottom samples taken from a conditioned, sealed tube of polymer modified bitumen. The conditioning consist of placing a sealed tube of modified bitumen in a vertical position at 163 +/- 5 deg C in an oven and at 6.7 +/- 5 deg C in a freezer for specified time. Supplied Complete with following:- Oven capable of maintaining 163 +/- 5 deg C. Freezer, capable of maintaining 6.7 +/- 5 deg C Rack, capable of supporting the 3 aluminium tubes in vertical condition in the Oven and freezer. Spatula and Hammer. 20cm dia fine sieve of 600 micron mesh. Glass rod. Tweezer. Pair of Asbestos Hand Gloves Aluminium tubes of 25.4mm dia X 136.7mm length X 1mm thickness - 3 Nos. Glass funnel

For determining the hardness number of Mastic Asphalt for flooring. It consist of an internally insulated cabinet to the base of which is fitted a water bath having two taps. The bath is heated by an immersion heater and the temperature is controlled with the thermostat at 35° +/- 0.5° C. A 6.5mm dia pin is loaded on the specimen by means of a lever to give a 31.7 Kg weight. A dial gauge 0.01 x 25 mm is provided to record the penetration of pin into the specimen.

This Apparatus is used for determination of the dry density of compact, fine, medium grained soils and for layers not exceeding 50 cm thickness. A circular hole is dug into the ground, all the soil from within it collected, weighed and dried, and the hole back-filled with a standard uniform sand or fine gravel, poured from a calibrated container for calculating the volume of hole. Sand Pouring Cylinder, fitted with conical. Funnel and Shutter, 100mm (10cm) dia Sand Pouring Cylinder 150mm (15cm) dia Sand Pouring Cylinder 200mm (20cm) dia Sand Pouring Cylinder

Used to determine the relevant proportions of clay-like or Plastic fines and dust in granular soils & fine aggregate Consists of: Acrylic graduated cylinder (4 nos.) Rubber stopper for cylinder (4 nos.) Graduated Steel rule 450 mm Funnel 100 mm plastic Aspirator bottle 5 lts plastic with rubber cock Stand for the aspirator bottle with siphon assembly Irrgation tube with stop pinch cock & weighted foot assembly

Augers are used to collect disturbed soil samples at reasonal depths for laboratory tests. Augers are available in two types and each in different sizes. Blade type (posthole type) and helical type (screw type). Each auger outfit consists one each of auger head, one meter long rod, tee piece and handle. Depth of excavating can be increased using additional extension rods. AUGER POSTHOLE TYPE (a) 50mm, (b) 75mm (c) 100mm dia (d) 150mm dia AUGER SCREW TYPE (a) 25mm, (b) 38mm, (c) 50mm, (d) 75mm, (e) 100mm, (f) 150mm, (g) 200mm, (h) 250mm, (i) 300mm dia, EXTRAS : Extension rod 1 meter length with threading at both ends and couplings, set of two spanners and tee piece.

This apparatus is used to determine Softening point of Bitumen. It is that temperature at which a sample of bituminous material loaded by a 9.5mm dia steel ball, drops a specified distance when heated under specified conditions. Specification :   The apparatus consists of steel bracket with a sliding plate support. That support has two holes of 10mm dia on which a ring and ball guide can be kept. A central hole on this plate is for inserting thermometer. Supplied with a glass beaker approximate 600ml, high and a hand stirrer and 2 Nos. 9.5mm dia steel balls   RING & BALL APPARATUS (ELECTRICALLY OPERATED) Electrical heating, with a Heater and Energy Regulator, Suitable for operation on 230 V, 50Hz, Single Phase, A.C. supply. Each unit is supplied with bath of heat resistant glass and the following * Tapered Rings, 2 Nos. * Ball Centering Guide, 2 Nos. * Steel Ball, of 9.5mm dia, 2 Nos. * Ring Holder, 1 No. * Electric Heater (Hot Plate), 1 No.

Efficient sampling out of bulk materials/deposits is the most important for getting the true idea about the bulk material. The volume of material to be tested is usually quite huge and it requires reduction in volume in a methodical manner. The Riffle Sample Divider helps to reduce the bulk while maintaining the character of the material and thus it is a helpful, light and handy device for sampling work. The standard units are made of GI sheet and mounted on rigid steel frame and supplied with three pans and one scoop. Available in following sizes. Sizes : 13mm - 14 slots Sizes : 20mm - 16 slots Sizes : 25mm - 16 slots Sizes : 40mm - 16 slots