Gyratory Compactor

Instrument Details


Gyratory compactor produces bituminous sample which simulate actual field compaction particle orientation thus improving mix design ability. Gyratory compactor was developed under Superpave mix design method. The primary operating parameters for the gyratory compactor include the pressure applied to the specimen during compaction; the speed of gyration/rotation; the number of gyrations applied to the specimen; and the angle of gyration. The sample of 100or150 mm dia can be prepared which can be further used for performance testing.

Make : Troxler
Model : 5850 Superpave™ Gyratory Compactor
Specification :  

Power Requirements

115 VAC (±10%), 60 Hz, 15 Amp


174 H x 78.7 D x 68 W cm (68.5 H x 31 D x 26.75 W in.)


Approximately 227 kg (500 lb.)

Consolidation Pressure

90 – 1000 kPa

Angle of Gyration

Adjustable from 0 to 1.5° internal or external

Speed of Gyration

30 ±0.5 gyrations per minute

Number of Gyrations

Adjustable from 1 to 999

Mold Dimensions

150.0 mm ID x 317.5 mm height (100 mm and 4 in. ID also available)
50.0 mm minimum specimen height
Maximum Mold Temperature 175° C

Modes of Operation

Compact to specified number of gyrations or specimen height

Data Acquisition

Gyration number
Specimen height (to nearest 0.1mm)
Angle of gyration
Shear value (optional)

Data Output

USB and RS-232 ports to upload to printer, computer or removable drive

Unit of Measure

SI units

Working Principles


  • Highway Engineers
  • Bitumen Manufacturers
  • Road Construction Companies
  • Academicians

User Instructions

  1. Final size of sample, angle gyration etc should be provided
  2. All necessary data for mixing of bitumen and aggregate should be provided

Contact Details

CSIR-Central Road Research Institute,
Delhi-Mathura Road, New Delhi-110025
Phone: 011-26832173, 26832325
Email: director [dot] crri [at] nic [dot] in

Instrument Usage Charges(Including GST)

Industry Universities/IITs National Labs
Rs 25000/- per sample Rs 15000/sample Rs 10000/sample