AUTOMATIC EXTRACTOR FOR BINDER RECOVERY OF BITUMINOUS MIXTURES

Description

Automatic high efficiency equipment that allows for the extraction of binder from bituminous mixtures, sieving of aggregates, recovery of filler and the regeneration of the solvent, in only one stage. The circuit is closed so that a lot of solvent is saved and the emission of toxic fumes is reduced. It has a static column of sieves with vibration, a high capacity centrifuge, a distillation unit with a condenser refrigerated with water, a solvent deposit, a pump for the solvent and an electronic control pannel.

Technical characteristics

Model: CONTROLS 75-B0005
Capacity: up to 3500 g of sample in each test
Extraction time: from 25 to 40 min.
Solvent deposit: 35 litres.
Centrifuge speed: 11000 rpm
Maximum quantity of mineral dust retained: 400 g.
Distillation capacity: 40 litres/hour

Applications

Extraction of binders of bituminous mixtures for the determination of the quantity of bitumen, sieving of aggregates and recovery of filler. It is used with laboratory samples, asphalt plant samples and core samples of roads in use. It is very useful for the performance of a great number of tests.

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SHRP GYRATORY COMPACTOR

Description

The compactor has the capacity to produce automatically cylindrical laboratory samples of 100 and 150 mm diameter. It has a hydraulic piston, an electric gyratory engine, a system of continuous measurement of the sample height, an internal control system of the equipment and data manipulation with RS-232 exit, a matrix printer, a kit for height calibration, pressure, angle and speed, a manual hydraulic piston to desmould the samples, a temperature bore and several moulds and accessories to perform the test. The data can be translated to a computer and be treated with specific programs for SHRP mixture design (Gyropave).

Technical characteristics

Model: TROXLER 4140
Pressure: 200 to 1000 kPa. (Test value 600 kPa ± 3%)
Angle: 0,5º to 2,0º in 0,02º increments. (Test value 1,25º ± 0,02º)
Speed: 30 ± 0,5 rpm
Laboratory sample diameter: 100 to 150 mm
Number of cycles. from 1 to 1000
Storage capacity: last 6 tests

Applications

This equipment is used in the laboratory for the study of hot bituminous mixtures compacting. Through the corresponding volumetric calculations and in accordance to SHRP specifications (AASHTO TP4-93 and AASHTO MP2-95) it allows for the dosage of bituminous mixtures.

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100 KN STATIC PRESS

Description

Hydraulic press designed to reach 10000 kg of maximum compressive load at constant deformation speed. The speed is controlled through voltage variations supplied to the engines with direct current that move the lower plate with a worm gear. The load is reached with high quality pushing-bearing. The press also has a mobile lower plate, a high rigidity frame, an upper crossbeam adjustable in height where the load cell is fixed, an electronic control panel, an acquisition, storage and manipulation data system and several accessories.

Technical characteristics

Model: FARRANCE WF 10072
Engines: 220 V, direct current and 150 rpm maximum speed
Plate movements: 114 mm
Load cells: 2000, 5000 and 10000 kg maximum capacity (± 0,1% f.e)
Deformation transducer: 50 mm maximum capacity (± 0,1% f.e)
Speed range: Fast from 0,05 to 50 mm/min. Slow from 0,0005 to 0,5 mm/min
Maximum speeds in relation to load charge: 15 mm/min to 10000 kg and 50 mm/min to 5000 kg

Applications

Mechanical characterisation of bituminous mixtures under compression, indirect tensile strength, Marshall breaking, triaxial, etc., of laboratory test samples or road samples. The results are necessary for the design of bituminous mixtures (Marshall dosage, mixtures dosage, recycling, etc.), for the study of the permanent plastic deformation resistance (stability and Marshall deformation), to test the effects of water on mixtures (immersion-compression test), fulfilment of values specified in the norms, etc.

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WHEEL TRACKING EQUIPMENT

Description

Equipment to test bituminous mixtures for the evaluation of the resistance to permanent deformations. All the elements fulfil the specifications of the NLT-173 norm. The equipment has an automatic acquisition and manipulation data system.

Technical characteristics

Model: MECACISA
Test machine over a rigid frame with wheels to ease the transportation, formed by a test wagon moved by an electric engine and an eccentric steering wheel (42 ± 1 passings per minute in a covered distance of 23 ± 0,5 cm). The test wheel is placed over it with a holding arm in which free end the necessary loads are placed to provide for the specified test load (9 kgf/cm2).
Thermostatic chamber of 130x100x120 cm to hold the test tracking equipment, with lateral entrance, frontal window and inside lightning.
Heating system formed by two electric convectors of 2500 W regulated by a digital controller and a bore Pt100. The normal test temperature is 60 ± 1º C.
Thermostatic mixer for the production of hot bituminous mixtures, a tilt recipient of 25 litres capacity, a kneading blade with planetary movement of 0,5 CV.
Compactor with vibratory plaque formed by two vibrators of 3000 rpm that develops a strength of 3 kN each.
Detachable metallic moulds of 300x300x50 mm and of 300x300x100 mm
Other accessories: extenders, levellers, collars, compacting base, etc.

Applications

Study of the resistance to permanent plastic deformations of bituminous mixtures in accordance to the NLT-173 norm of laboratory test samples, asphalt plant or road samples. Quality control of bituminous mixtures. Susceptibility to the content of binder in bituminous mixtures.

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TEXAS GIRATORY TEST MACHINE

Description

Equipment for the fabrication of laboratory test samples and measurement of permanent deformations of bituminous mixtures. It has a hydraulic piston, a gyratory engine and elements for the measurement and continuous registration of the gyratory angle, sample height and gyratory pressure. The compacting is performed by the kneading machine that puts the sample to a static vertical load whilst the sample axe describes a conic revolution movement with a small angle.

Technical characteristics

Model: ENGINEERING DEVELOPMENTS CO. INS mod 6B 4C
Sample diameter: 4 an 6 inches
Gyratory speed: 12 rpm
Test pressure: 0 to 24 kgf/cm2
Gyratory angle: 0 to 4
Number of rotation: from 0 to 1000
Temperature: 25 to 150º C
Accessories: moulds, calibrators, rigid, hydraulic and pneumatic rollers, ...

Applications

Gyratory compactor for the production of cylindrical samples of bituminous mixtures. Measurement of the workability. Test of the resistance to permanent plastic deformations of asphalt mixtures.

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