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 2C 2O 4 ) 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 |