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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 Test Rate per Test (Rs.) Equipments/Apparatus used

    1.

    Sieve Analysis

    500

    IS Sieves of size 4.75mm, 2.36 mm, 1.18mm, 600 µ, 425, 75 µ

    2.

    Limit Test

    600

    Casagrande Apparatus(set), Flash water Bottle, Smooth and Rough Glass sheet, spatula etc.

    3.a

    Proctor Density(Standard)

    2500

    Standard Proctor Mould, Proctor Hammer, Measuring Cylinder, Balance 10 kg capacity and 0.01 gm to 1 kg accuracy,  Crucible, Thermostatic Oven etc.

    3.b

    Proctor Density(Modified)

    4000

     Modified Proctor Mould, Proctor Hammer, Measuring Cylinder, Balance10 kg capacity and 0.01 gm to 1 kg accuracy, Crucible, Thermostatic Oven etc.           

    4.

    CBR Test

    3000

     CBR  machine(set),Mould, Rammer, Water Tank, Balance 10 kg, Weight, Perforated Plate, Blotting Papers 12.5mm size etc.

    5.

    Swelling Index Test

    365

    425 µ Sieve , glass cylinders two 100 ml capacity

    6.

    Field Density by Sand Replacement Method

    5000

    Cylindrical core cutter 100mm inner dia x130mm long, standard sand 1 bag

    7.

    Field Density by core cutter Method

    1000

    Cylindrical core cutter , Rammer,Balance10kg capacity, Rapid moisture meter etc.

    8

    CTB mix design

    15000

    Cylindrical mould(6 nos), proctor mould sets, Compression Test Machine(CTM), Balance 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 Test Rate per Test (Rs.) Equipments/Apparatus used

    1.

    Determination of Shear Parameters by Direct Shear Test

    3000

    Direct Shear Test Machine, load  frame, weight, Proving ring, Dial gauge etc.

    2.

    Determination  of unconfined compressive strength of soil

    1500

    Unconfined Test Machine, Proving ring, Dial gauge, Vernier calipers, Timer, Oven, Weight, Balance.

    3.

    Grading /Particle Size analysis(wet test)

    500

    75µ

    4.

    Grading /Particle Size analysis(dry test)

    500

    4.75mm,2.36mm,1.18mm, 600µ, 425µ,75µ

    5.

    Grain Size test by Plummet Balance

    1000

    Plummet Balance full set

    6.

    Determination of Specific gravity by density bottle

    500

    Specific Gravity Bottle, Balance etc.

    7

    Determination of water content by oven drying method

    250

    Electric 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 Test Rate per Test (Rs.) Equipments/Apparatus used

    1.

    Penetration

    1000

    Standard Penitration apparatus, water bath, Transfer Dish, Thermometer, device

    2.

    Ductility

    1000

    Ductility test Apparatus

    3.

    Specific Gravity

    1000

    Borosil Beaker, Balance, Distilled water, Thermometer etc.

    4.

    Softening Point

    1000

    Ring & Ball Apparatus, Freeze

    5.

    Binder Content (both field & Lab)

    1000

    Bitumen Extractor

    6.

    Flash Point & Fire Point

    1000

    Flash Point & Fire Point Apparatus

    7.

    Residue on 600 Micron Sieve

    1000

    600Micron Sieve, Balance, Borosil Beaker, Thermometer etc.

    8..

    Residue by evaporation

    1000

    Borosil Beaker, Balance, hot plate, Thermometer etc

    9.

    Solubility in Trichloroethylene

    1000

    Borosil Beaker, Trichloroethylene, Filter paper etc.

    10.

    Elastic recovery

    1000

    Ductilo meter, Freeze etc.

    11.

    Determination of loss of heating

    1000

    Borosil Beaker, Thermometer, Oven, Balance etc.

    12.

    Marshall Stability Mix Design

    15000

    Marshall Stability Apparatus with Automatic Hammer, Marshall Mould, Hand Compactor, Mastic Mixture, Thermometer, Oven, Heating Apparatus etc.

    13.

    Stripping Value

    3000

     Borosil Beaker, Water Bath, Thermometer, Heating Apparatus etc.

    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 Test Rate per Test (Rs.) Equipments/ Apparatus used

    1.

    Aggregate Impact value (A.I.V)

    500

    Aggregate Impact Testing Machine

    2.

    Grading

    500

    A set of I.S. sieves of different apertures

    3.

    Flakiness Index & Elongation Index (FI & EI)

    600

    Flakiness Index Gauge & Elongation Index Gauge

    4.

    Water Absorption

    300

    Oven, Balance etc.

    5.

    Abrasion Value

    750

    Los Angeles Abrasion Testing Apparatus

    6.

    Crushing Value

    750

    Compression Testing Machine 500KN capacity(Hand operated)

    7.

    Bulk Density

    250

    Bulk Density Mould, Balance etc.

    8.

    Moisture Content

    250

    Balance, Moisture Meter

    9.

    Specific Gravity

    500

    Pycnometer, Balance etc

    10.

    Bulking of sand

    300

    Borosil Beaker, Kerosene, Distilled water, Balance etc

    11

    10% fines  value

    2000

    Compression Testing Machine 500KN capacity(Hand operated , Balance, Sieve sizes14mm, 12.5mm,10mm,  etc

    12

    Deleterious Materials

    2000

    Balance, containers, Sieves as per I.S. 460-1962,sodium oxalate (Na 224 ) etc.

    13

    WMM mix design

    15000

    I.S. Sieve(as per MoRTH), Proctor mould set, Balance 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 Test Rate per Test (Rs.) Equipments/Apparatus used

    1.

    Setting time of Cement

    1000

    Vicat Apparatus, Measuring Cylinder, Spatula, trowel etc.

    2.

    Compressive Strength of Cement

    1000

    Vicat Apparatus, Cement mould vibrator, Measuring Cylinder, Cube mould(7.07x7.07x7.07)cm3, Compression Testing Machine(500KN), Curing Tank

    3.

    Soundness Test

    1000

    Autoclave Machine, Le Chatelier Mould

    4.

    Fineness Test of Cement

    1000

    Blains Air Permeability Apparatus, Standard Cement, Mercury, Stop Watch etc.

    5.

    Compressive Strength of Concrete(cube test)

    1500

    Compression Testing Machine, Curing Tank, cube mould(15x15x15)cm3, Concrete Vibrator, Concrete mixture etc.

    6

    Compressive Strength  and water absorption test of Concrete Paver Block (8 nos of sample)

    5000

    Compression Testing Machine, Curing Tank etc.

    7.

    Mix Design of Concrete:
     

    15000

    Steel Mould, Compression Testing Machine, Slump Apparatus, Large Tray, Balance, Vibrating Table etc.

    8.

    Physical test of Brick

    2500

    Compression Testing Machine, Water tank ,Balance, Oven, Measuring Tape etc.

    9.

    Flexural Strength of Concrete

    1500

    Flexural Testing Machine

    10.

    Tensile Strength of Steel

    1000

    Universal Testing Machine

    11.

    Bending & Rebending of Steel

    1000

    Universal Testing Machine

    12.

    Bump Integrator test(Road roughness test)

    8710

    Bump Integrator Machine