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Government Of Assam Public Works (Roads) Assam Road Research and Training Institute

Service Delivery

  • The Assam Road Research & Training Institute (ARR&TI) since its establishment has been engaged in the relentless service of providing Training to the in-service Engineers of Public Works Roads Department, Contractors’ personnel and also imparting training to the Technical Students of the Engineering Colleges during summer and winter vacation at the request of the Head of the Institutions.

    The Assam Road Research & Training Institute’s laboratories are specially designed and equipped with Laboratory Equipments to carry out all necessary quality control tests of the materials used in road/ bridge construction works undergoing in the State, at a very affordable price. Following five Laboratories of ARR&TI are conducting routine testing of samples/materials /mixes/ surface evenness:

    Soil Section: The Soil Section deals with testing of properties of soil such as Liquid Limit, Plastic Limit, Gradation of soil, Proctor value, CBR value etc. Following is the list of test with their rate of testing and equipments/ apparatus used:

    Sl. No.Name of TestRate per Test (Rs.)Equipments/Apparatus used
    1.Sieve Analysis105IS Sieves of size 4.75mm, 2.36 mm, 1.18mm, 600 micron, 425 micron, 75 micron
    2.Limit Test231Casagrande Apparatus and Grooving Tools, Balance, Crucible, Thermostatic Oven, Flash water Bottle, Smooth and Rough Glasses, 425 Micron IS Sieve etc.
    3.Proctor Density473Proctor Mould, Proctor Hammer, Measuring Cylinder, Balance, Spatula, Crucible, Thermostatic Oven etc.
    4.CBR Test1001Self Load Frame, CBR Mould, Weights, Proving Rings, Displacement Dial Gauge, Rammer, Spacer, Water Tank, Balance, Perforated Plate, Blotting Papers 12.5mm size etc.

    Soil Survey Section: Soil Survey Section deals with testing of soil properties such as Specific Gravity, Moisture Content of soil, mechanical properties of soil, particle size analysis, shear strength of soil etc.

    Following is the list of test with their rate of testing and equipments/ apparatus used:

    Sl. No.Name of TestRate per Test (Rs.)Equipments/Apparatus used
    1.Determination of Shear Parameters by Direct Shear Test173Direct Shear Test Machine
    2.Determination of Shear Parameters by Triaxial Test560Triaxial Test Machine
    3.Determination  of unconfined compressive strength of soil77Triaxial Test Machine
    4.Determination of Consolidation Properties of Soil777Consolidation Test Equipment
    5.Determination of Permeability by constant head test595Constant Head Permeability Equipment
    6.Determination of Atterberg Limits of Soil231Casagrande Apparatus
    7.Determination of grain size distribution by sieving.91IS Sieves of different sizes, Balance etc.
    8.Determination of Specific gravity by density bottle98Specific Gravity Bottle, Balance etc.
    9.Determination of water content by oven drying method42Electric Oven, Balance etc.

    Bitumen Section: The properties of Bitumen can be tested in this Laboratory of ARR&TI. The tests required for ascertaining the Bitumen Content in a sample, Penetration value, Softening Point, Ductility property, Bituminous Mix Design etc. can be conducted in this Laboratory.

    Sl. No.Name of TestRate per Test (Rs.)Equipments/Apparatus used
    1.Penetration280Automatic Penetrometer
    2.Ductility266Ductilometer
    3.Specific Gravity140Borosil Borosil Beaker, Balance, Distilled water, Thermometer etc.
    4.Softening Point305Ring & Ball Apparatus, Freeze
    5.Binder Content (both field & Lab)784Bitumen Extractor
    6.Determination of residue of specified penetration315Automatic Penetrometer
    7.Viscosity151Tar Viscometer, Say- Volt Viscometer
    8.Flash Point & Fire Point266Flash Point & Fire Point Apparatus
    9.Residue on 600 Micron Sieve418600Micron Sieve, Balance, Borosil Beaker, Thermometer etc.
    10.Miscibility of emulsion with water260Balance, Borosil Beaker, Thermometer etc.
    11.Residue by evaporation392Borosil Borosil Beaker, Thermometer, Oven, Pipette etc.
    12.Solubility in Carbondisulphide412Borosil Beaker, Trichloroethylene, Filter paper etc.
    13.Elastic recovery266Ductilometer, Freeze etc.
    14.Determination of Water Content392Dean & Spark Apparatus
    15.Determination of loss of heating417Borosil Beaker, Thermometer, Oven, Balance etc.
    16.Marshall Stability Mix Design3643Marshall Stability Apparatus with Automatic Hammer, Marshall Mould, Hand Compactor,Mastic Mixture, Thermometer, Oven, Heating Apparatus etc.
    17.Stripping Value140Borosil Borosil Beaker, Water Bath, Thermometer, Heating Apparatus etc.
    18.Mastic Asphalt (Design)3643 Heating Apparatus, Thermometer, Mastic Mould, Hardness Number Machine.

    Aggregate Section: The Aggregate Section Laboratory of ARR&TI facilitates testing of properties of aggregates such as Impact value, Crushing Value, Abrasion Value, Gradation of Aggregates, Flakiness Index, Elongation Index, Density, Specific Gravity, Water Absorption, etc.

    Sl. No.Name of TestRate per Test (Rs.)Equipments/ Apparatus used
    1.Aggregate Impact value (A.I.V)287Aggregate Impact Testing Machine
    2.Grading260A set of I.S. sieves of different apertures/
    3.Flakiness Index & Elongation Index (FI & EI)223Flakiness Index Gauge & Elongation Index Gauge
    4.Water Absorption161Oven, Balance etc.
    5.Abrasion Value335Los Angeles Abrasion Testing Apparatus
    6.Crushing Value371Compression Testing Machine                      (Hand operated)
    7.Bulk Density132Bulk Density Mould, Balance etc.
    8.Moisture Content42Balance, Moisture Meter
    9.Specific Gravity157Pycnometer, etc
    10.Sieve Analysis of fine aggregate including F/M and %of Silt Content286Sieve Shaker, a set of IS Sieves
    11.Proctor Test473Proctor Mould, Hammer, Sieves etc.

    Cement Section: This Laboratory facilitates testing of properties of cement, bricks, Steel and Cement Concrete. Properties of cement such as Fineness Modulas, Flexural Strength, Setting Time, Soundness, and Compressive Strength etc. are tested here. Moreover, concrete mix design, compressive strength of bricks and also tests related to properties of Steel are also conducted in this Section.

    Sl. No.Name of TestRate per Test (Rs.)Equipments/Apparatus used
    1.Setting time of Cement136Vicat Apparatus, Measuring Cylinder, Spatula, trowel etc.
    2.Compressive Strength of Cement151Vicat Apparatus, Vibrating Machine, Measuring Cylinder, Compression Testing Machine, Curing Tank
    3.Soundness Test280Autoclave Machine, Le Chatelier Mould
    4.Fineness Test of Cement318Blains Air Permeability Apparatus, Standard Cement, Stop Watch etc.
    5.Compressive Strength of Concrete76Compression Testing Machine, Curing Tank
    6.Mix Design of Concrete:
    1st Design 2nd Design
    5000
    3200
    Steel Mould, Compression Testing Machine, Slump Apparatus, Large Tray, Balance, Vibrating Table
    7.Compressive Strength of Brick151Compression Testing Machine, Water tank etc.
    8.Water Absorption of Brick161Water Tank, Balance, Oven etc.
    9.Tolerance Level of Brick227Measuring Tape
    10.Flexural Strength of Concrete76Flexural Testing Machine
    11.Tensile Strength of Steel300Universal Testing Machine
    12.Bending & Rebending of Steel350Universal Testing Machine
    13.Wet Transverse Strength of Tiles76Tiles Abrasion Apparatus
    14.Water Absorption of Tiles151Water Tank, Balance etc.