Educational Equipments Manufacturer, Exporters & Suppliers - School Educational Equipments Manufacturers & Exporters of Educational Equipments for Lab. Science Lab Products, Teaching Aids, Classroom Instruments, Educational Laboratory
Ring And Ball Apparatus
As Per IS: 1205-1985, IP:58/63
This is apparatus is used to determine softening point of bitumen, Ring and ball apparatus is used to determine softening point. It is that temperature at which a sample of bituminous material loaded by a 9.5mm dia.-steel ball, drops at a distance of 25mm.
Specifications: 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 8.5cm I.D., 12cm high and a hand stirrer and 2 nos. 9.5mm dia. steel balls.
Ring and Ball Apparatus (Electrical)
Same as above but supplied with a thermostatic hot plate. Suitable for operation on 230V A.C.
Accessories: 0 0 0 0 0 0 Thermometer IP62c range-2 C to 80 C x 0.2 C, Thermometer IP 61c range 30 C to 300 C x 0.5 C, Electrical Stirrer with stand and blades to gently stir water in the beaker. Suitable for operation on 230 V A.C.
As Per IS: 310, 1203, 1448, IP: 60, 49, 50, ASTM: D5, D217, D637
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 0 will penetrate vertically in a duration of five seconds at a temperature of 25 C determines penetration for gradation.
Specifications: It consists of a vertical pillar mounted on a base provided with leveling 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 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 each 50gms and two sample containers.
Accessories: Penetration cone for empirical estimation of penetration of lubricating grease, petroleum jelly etc.
Automatic Standard Penetrometer
Same as above but supplied with transistorized timer and electro-magnet incorporated in the clutch mechanism to accurately control penetration time to exact five seconds.
Ductility Testing Apparatus
As Per IS: 1028 -1958, ASTM: D113,IP 32, 55.
In flexible pavement construction, bitumen binders are used. It is important that bituminous material forms ductile thin film around the aggregates, which serves as a binder. The binder material not of sufficient ductility renders pervious pavement surface and leads to development of cracks. Therefore it is important to carry out the ductility tests on bituminous material. Ductility is defined as distance in cms. to which a standard briquette of bitumen can be stretched before the thread breaks. The briquette is stretched at a rate 0 0 of 50mm/minute +/-2.5 mm per minute at a temperature of 27 C+/-0.5 C.
Specifications: The apparatus consists of a Water bath with a thermostatic heater, and a circulating pump to maintain uniform water temperature. One half of the briquette moulds in fixed on a fixed plate in the water bath, the other half of the briquette mould is fixed to a carrier which slides over a rotating threaded shaft with a clutch. The motor and gears to rotate the shaft are housed in a cabinet fixed above the other and of the bath. A pointer fixed to the carrier moves over a scale graduated from 0-110 cm x 1mm fixed on the bath with "0"(Zero) of the scale towards the fixed plate slide. The rotating shaft has 2 speeds of travel for the bracket, 5cm/min. and 1cm/min. selected by a clutch. Water bath inside is aluminum, it is an insulated water bath. Water bath is provided with a drain. A heater with thermostatic control is fixed inside the water bath. Control switches for motor, stirrer, heater and indicator lamps are fixed at a convenient place on the water bath. Complete with three briquette mould and one base plate, all made of brass. Operates on 230Volts A.C. single phase.
Accessories: 1) Thermometer IPm 38C, range 23 C to 27 C, 2)Ductility mould with base plate.
Stripping Value Apparatus
For determining Stripping Value of bituminous mixes having aggregate size 1.0mm to 75 microns. Specifications: A circular tray rotates in a vertical plane at a rate of approximately 100 rpm by an electrical 0 geared motor1 4 bottles of approximately 400cc are mounted on this circular tray at an angle of 90 to each other with their mouth towards centre of the tray. A time switch is provided. Suitable for operation on 230Volts A.C. Single phase.
This device was developed by U.S. Bureau of Public roads and is used to measure deflections of flexible pavements. The light weigh instrument is supplied in two path for assembling on site with easy hand tools. In use one end of the beam rests at a point under investigation while the beam is pivoted at the centre. The free and carries a dial gauge to record the deflections. The other end is kept on a stable platform. The beam ratio is 2:1 which magnifies even small deflections. Supplied with a dial gauge 0.01 to 25mm. This is a lift weight dismantle able instrument and easy carry.
Centrifuge Extractor (Hand Operated)
ASTM: D2172, AASHO: T-58, T-164
This instrument is used for determination and checking of bitumen percentage in bituminous mix, the mix is added with a solvent and dissolved bitumen is removed by centrifugal action. It consists of a removable aluminum rotor bowl, capacity 1500gms, with a cap and tightening nut. The bowl assembly is mounted on a vertical shaft which produces from a cast housing. This shaft and the bowl is rotated fast manually by enclosed gear in the cast body and handle. Solvent is introduced during the test through the holes in the cap of the housing. A drain is provided to collect dissolved bitumen coming out of the rotating bowl and getting collected in the housing.
Centrifuge Extractor (Motorized)
Same as above but shaft is rotated by an electric motor and gear. Care is taken on prevent solvent entering into the rotor of electrical motor. Operates on 230Volts A.C. single phase.
Accessories: 1. Filter paper disc. (packet of 100nos.) 2. Benzene.
Marshall Stability Test Apparatus
ASTM: D 1559-T-62
Originally developed by Bruce Marshall, a highway engineer in U.S.A later on standardized by ASTM. Generally the test is applicable to hot mix designs using bitumen and aggregates upto a maximum size of 25mm. In this method, the resistance to plastic deformation of cylindrical specimen of bituminous mixture is measured when the same is loaded at periphery at 5cm per min. This test procedure is used in designing and evaluating bituminous paving mixes. The test procedure is extensively used in routine test programmers for paving jobs. There are two major features of the Marshall method of designing mixes namely. a) densityvoids analysis, b) Stability-flow tests. The Marshall stability of mix is defined as a maximum load carried by a 0 compacted specimen at a standard test temperature of 60 C. The flow value is deformation the Marshall test specimen at under goes during the loading upto the maximum load, in 0.25 mm units. In this test and attempt is made to determine optimum binder content for the type of aggregate mix and traffic intensity.
The apparatus consists of :
- A loading unit motorized, capacity 5000kgf with two telescopic pillars and adjustable cross head. Limit switches are fitted inside to control upward or downward movement of the pillars. On-off reversing switch and indicator lamps are on the front side while a hand wheel to manually move the pillars is on the right. The load frame has fixed speed of 5.08cm, per minute. Operated on 230 Volts A.C.
- 1 NO. Compaction pedal with specimen mould holder.
- 2 Nos. Compaction Rammers, 4.5kg weight and free fall 45.7cm.
- 1 No. Breaking head assembly with provision to fix flow meter.
- 3 Nos. Specimen mould 10.16 cm I.D. x 7.6 cm high with base plate and extension collar.
- 1 No. Kit for specimen extraction, consists of one each load transfer bar, steel ball, specimen extracting plate.
(A) Integral type proving Ring capacity 3000Kgs. (B) A dial gauge 0.01 x 25mm. (C) Universal water bath S.S with false bottom and pyramid shaped lid to accommodates 3 Nos. Marshall specimen. (D) Thermometer 0-250 C x 1 C.
Automatic Bituminous Compactor
As Per ASTM D-1559
This new apparatus automatically simulates hand compaction as specified in ASTM Test D-1559 (Resistance to Plastic Flow of Bituminous Mixes) and develops a uniformity in the test procedure. Supplied complete with operating frame, standard compaction hammer assembly, motor and controls, and compaction pedestal. The new Automatic Bituminous Compactor will accommodate one standard bituminous mould at a time. The mould are held in position by a quick clamping device so that are easily inserted and removed from the apparatus. The apparatus features a new design in the lift and release mechanism to develop uniformity in the height of the drop of the hammer. The basic design of the hammer is the same as that used for the hand compaction procedure. The 0 hammer is free to rotate on the guide shaft for a full 360 to eliminate friction in the drop. The unit is supplied with an automatic counter which can be preset for 50 or other specific number hammer drops after which it will automatically by shut off.
Powered by a ½ Hp motor, the new Automatic Bituminous Compactor is avaiLable for 220 volts, 50Hz, AC operation. The compactor is supplied with the standard base pedestal which consists of a 300mm x 300mm x 25mm thick steel plate mounted on an 20mm x 200mm oak block as required by the ASTM specifications.
As Per ASTM D -1559
This mixers are suitable for mechanical mixing of hot-mix bituminous mixtures. It is designed according to the description in specification of the Stage of California Test Method 304B. And or uniform mixing of Bituminous and Asphalt mixing. The stainless Steel mixing bowl has the capacity of 5 liters. The pedal, also of a stainless Steel, can have both planetary and revolving motion for uniform mixing. In operation the paddle is rotated at two speeds I.e, low and high rpm to agitate and mix the mixture vigorously with the aid of the spring steel baffles also inserted in the bowl. Furnished with an electric heating arrangement for maintaining the temperature during the mixing period. Operated on 220 volts, 50Hz., Single phase AC supply.
Core Cutting/Core Drilling Machine (Motorized)
Suitable to cut/Drill cores of Concrete, Rocks, Stoned, Tiles or the similar material. The machine is suitable for core samples of size upto 150mm diameter. With the help of thin Walled Diamond Bits which are at extra cost. The machine has sturdy base with pillar support in which rack and pinion is provided for adjustment in height and penetration assembly. The leveling screws are provided at the base. Fro gripping the sample in position suitable grips provided. A suitable electric motor, standard make is fitted in the machine with cooling arrangement with water. The base frame is also fitted with wheels for ease fo transportation.
Dimension approx. are as under:
Head travel on rack350mm
- Height: 1300mm
- Base: 600 x 1200mm
- Drill Speeds: Drill Speeds 900rpm for soft samples and 350rpm for hard samples.
- Water Swivel: Built in the machines.
Suitable for 230 volts AC, single phase.
(1) Thin wall diamond bits. (2) Core Barrel. Diesel engine model: Same as above but works on diesel engine and thus can be used at site also.
Rock/Concrete Cutting Machine Electrically Operated With Cooling System
Rock/Concrete/Masonry, saw cutting machine can be used to cut Rock Cores. Concrete Cores, Stones, Building materials and metallic specimens. A smooth finish cut can be made with the machine in either wet or dry operation according to the nature of specimen (Cutters are at extra cost) The specimen cutting machine is designed to cut upto 200mm (specify the size of deep cut required in the specimen) deep cut in the Concrete, Stones, Tiles, Soft rocks and hand rocks or any other similar material. Specimen cutting machine is supplied complete fitted on a steel table, vice is fitted to hold the specimen. A guard is provided for the Diamond cutting wheel. The machine is operated by an enclosed type of fan cooled motor through the geared head drive. The speed of the cutting wheel is approximate 2100 to 2200 rpm or in accordance with the revolution specified on the particular cutting wheel. The machine is fitted with water supply pump for cooling the specimen and cutter during cutting operation. The machine is suitable for operation on 440 Volts A.C, mains, 3 phase. In the machine arrangement is provided to move the sample, fitted on vice, lengthwise and breadth wise.
Asphalt & Concrete Floor Saw
Specifications: Drive by Diesel of Petrol/Kerosene Engine, Diamond wheel of 300mm dia., suitable for a cut of depth upto 100mm is supplied with standard outfit. The trolley on which the engine is fitted also has a water thank which supplies a stream os water to keep the cutting blade cool during the operation. Adjustment to control depth of cut is also provided. A safety Guard is provide over the diamond wheel. Diamond wheel. Diamond wheels upto 600mm dia, can be supplied at extra cost.