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Bitumen Testing Instruments

BITU 201
Asphalt and Concrete Floor Saw
Driven by Diesel or Petrol / Kerosene Engine, Diamond wheel of 300mm dia., suitable for a cut of depth unto 110 mm is supplied with standard outfit. The trolley on which the engine is fitted also has a water rank which supplies a stream of water to keep the cutting blade cool during the operation. Adjustment to control depth of cut is also provided. A safety Guard is provided over the diamond wheel. Diamond wheels up to 600 mm dia., can be supplied at extra cost.
BITU 202
Benkleman Beam
This is used as timesaver device to measure deflections of flexible pavements. The light weight instrument is supplied in two parts 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 end 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 x 25mm. This is a light weight dismount liable instrument and easy to carry.
BITU 203
Centrifuge Extractor (Hand Operated )
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. Consists of a removable aluminum rotor bowl, capacity 1500 gms. This shaft and thus the bowl is rotated fast manually by enclosed gears 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.
BITU 204
Centrifuge Extractor (Motorised)
Same as the hand operated centrifuge extractor but shaft is rotated by an electric motor and gear. Care is taken to prevent solvent entering into the rotor of electrical motor. Operates on 230 Volts A.C. single phase.
Accessories : 1. Filter paper disc (packet of 100nos.) 2. Benzene
BITU 205
Core Cutting or Core Drilling Machine (Motorised)
Suitable to Cut / Drill cores of Concrete, Rocks, Stones, Tiles or the similar material. The machine is suitable for care 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 & pinion is provided for adjustment in height and penetration assembly. The leveling screws are at the base. For gripping the damply in positions suitable grips are 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 of transportation.
Dimension approx. are as under :
Height : 1300mm
Base : 600 x 1200mm
Head travel on rack : 350mm
Drill Speeds : 900 RPM for soft samples and 350RPM for hard samples.
Water Swivel : Built in the machines.
Suitable for 230 volts AC, single phase
Accessories : 1. Thin wall diamond bits 2. Core Barrel.
BITU 206
Ductility Testing Apparatus
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 renderspervious 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 of 50mm/minute 25mm per minute at a temperature of 27C 0.5C.
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 is 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 end 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 side. The rotating shaft has 2 speeds of travel for the bracket, 5cm/min and 1 cm/min., selected by a clutch. Water bath inside is aluminium, 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 moulds and one base plate, all made of brass. Operates on 230 volts A.C. single phase.
Accessories : 1. Thermometer IP 38 C, range 23C to 27C. 2. Ductility mould with base-plate.
BITU 207
Marshall Stability Test Apparatus
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 bitumenous mixture is measured when the same is loaded at periphery at 5 cm per min. This test procedure is used in designing and evaluating bituminous paving mixes. The test procedure is extensively used in routine test programmes for paving jobs. There are two major features of the Marshall method of designing mixes namely, a) Density voids analysis b) Stability flow tests. The marshall stability of mix is defined as a maximum load carried by a compacted specimen at a standard test temperature of 60C. The flow value is deformation the marshall test specimen under goes during the loading upto the maximum load, 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 :
1) A loading unit motorized, capacity 5000kgf with two telescopic pillars and an 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.
2) 1 No. Compaction pedal with specimen mould holder.
3) 2 Nos. Compaction Rammers, 4.5kg weight and free fall 45.7cm.
4) 1 No. Breaking head assembly with provision to fix flowmeter.
5) 3 Nos. Specimen mould 10.16cm I.D. x 7.6cm high with base plate and extension collar.
6) 1 No. Kit for specimen extraction, consists of one each load transfer bar, steel ball, specimen extracting plate.
Accessories :
(a) Integral type Proving Ring capacity 3000 kgs.
(b) A dial gauge 0.01 x 25mm
(c) Universal Water Bath S.S. with false bottom and pyramid shaped lid to accomodates 3 Nos. marshall specimen
(d) Thermometer 0 - 250C x 1C
BITU 208
Ring and Ball Apparatus (Manual)
This 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.
The apparatus consists of steel bracket with a sliding plate support. The 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.
BITU 209
Ring and Ball Apparatus (Electrical)
Same as the manual ring and ball apparatus but supplied with a thermostatic hot plate. suitable for operation of 230 V A.C.

Accessories : Thermometer IP 60C range 2C to 80C, Thermometer IP 61C range 30C to 300C x 5C. Electrical Stirrer with stand & blades to gently stir water in the beaker. Suitable for operation on 230V AC
BITU 210
Rock or Concrete Cutting Machine (Electrical)
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 (Cutter are at extra cost). The specimen cutting machine is designed to cut up to 200 mm (specify the size of deep cut required in the specimen) deep cut in the Concrete, Stones, Tiles, Soft rocks and Hard 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 r.p.m. 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 cutting during cutting operation. The machine is suitable for operation on 440 Volts A.C. mains, 3 phases. In the machine arrangement is provided to move the sample, fitted on vice, lengthwise and breadth wise.

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