Compaction Factor Test
The laboratory mix design gives the proportion of the mineral aggregate combination in terms of individual sieve sizes, for actual operational purpose in the field, blending of the two or more sizes of aggregates (each size having within its range of individual sieve size) would be necessary. This blending ratio is obtained on a weight basis giving percent weight of the coarse aggregate, fine aggregate and filler needed to give the ultimate gradation. This mineral aggregate combination together with the corresponding optimum bitumen content as determined in the laboratory, constitute the job mix formula for implementation during construction.
Types of Dense graded Bituminous Mixes
Bitumen & Asphalt Testing
Bitumen: - A black or dark brown non-crystalline solid or viscous material having adhesive properties, derived from petroleum either by natural or refinery processes and substantially soluble in carbon disulphide.
Asphalt: - A natural or artificial mixture in which bitumen is associated with inert mineral matter. The word ‘asphalt’ should always be qualified by indication of its origin or nature.
Following Tests are conducted on Bitumen & Asphalt
| Sr no. | Physical Tests & Parameters | Test Method |
|---|---|---|
| 1 | Elastic Recovery For Bitumen (Modified) | IS 15462 |
| 2 | Penetration Of Residue Bitumen (Modified) | IS 1203 |
| 3 | Absolute Viscosity Of Bitumen | IS 1206 (PART 2) |
| 4 | Flash And Fire Points | IS 1448 (PART 69) |
| 5 | Penetration Test Of Bitumen | IS 1203 |
| 6 | Ductility Test Of Bitumen | IS 1208 |
| 7 | Softening Point Test Of Bitumen | IS 1205 |
| 8 | Solubility In Trichloroethylene For Bitumen | IS 1216 |
| 9 | Specific Gravity Test Of Bitumen | IS 1202 |
| 10 | Viscosity Ratio Of Bitumen | IS 1206 (PART 2) |
| 11 | Kinematic Viscosity Of Bitumen | IS 1206 (PART 3) |
Bitumen Emulsion Testing
A liquid product in which a substantial amount of bitumen is dispersed in a finely divided droplets in an aqueous medium containing an emulsifier and a stabilizer.
Emulsified bitumen shall be of the following three types
| Sr no. | Physical Tests & Parameters | Test Method |
|---|---|---|
| 1 | Absolute Viscosity Of Bitumen Emulsion | IS 3117 |
| 2 | Coagulation Of Emulsion At Low Temperature Of Bitumen Emulsion | IS 8887 (ANNEXURE C) |
| 3 | Coating Ability And Water Resistance Of Bitumen Emulsion | IS 8887 (ANNEXURE F) |
| 4 | Ductility Test On Residue Of Bitumen Emulsion | IS 1208: 1978 |
| 5 | Miscibility With Water Of Bitumen Emulsion | IS 8887 (ANNEXURE H) |
| 6 | Particle Charge Of Bitumen Emulsion | IS 8887 (ANNEXURE E) |
| 7 | Penetration Test On Residue Of Bitumen Emulsion | IS 1203 |
| 8 | Solubility In Trichloroethylene For Bitumen Emulsion | IS 8887 (ANNEX- J) |
| 9 | Residue By Evaporation Of Bitumen Emulsion | IS 8887 (ANNEX- B) |
| 10 | Residue On 600 Micron Is Sieve Of Bitumen Emulsion | IS 8887 |
| 11 | Stability To Mixing With Cement Of Bitumen Emulsion | IS 8887 (ANNEX- G) |
| 12 | Storage Stability Test Of Bitumen Emulsion | IS 8887 (ANNEX- D) |
| 13 | Water Content Of Bitumen Emulsion | IS 1211 |
Bitumen Mix Testing
The bituminous mix design aims to determine the proportion of bitumen, filler, fine aggregates, and coarse aggregates to produce a mix which is workable, strong, durable and economical. The requirements of the mix design and the two major stages of the mix design, i.e. dry mix design and wet mix design.
Following Tests are conducted on Bitumen Mix
| Sr no. | Physical Tests & Parameters | Test Method |
|---|---|---|
| 1 | Bitumen Content Of Bitumen Mix/Core | IRC SP 112 |
| 2 | Density Of Bitumen Mix/Core | ASTM D 2726 |
| 3 | Marshall Stability And Flow Of Asphalt Mixtures Of Bitumen Mix/Core | ASTM D 6927 |
| 4 | Particle Size (Sieve Analysis)Bitumen Mix/Core | IS 2386 (PART 1) |
| 5 | Specific Gravity Of Bitumen Mix/Core | ASTM D 2041 |
In-Situ tests / Field Test
We provide various Field Testing for Highway engineering, these services facilitate for Design of pavements, Highways & Bridges, etc.
Following Tests are conducted on field
| Sr no. | Physical Tests & Parameters | Test Method |
|---|---|---|
| 1 | Benkelman Beam Test | IRC 81 |
| 2 | Modulus of Sub grade Reaction | IS 9214 |
| 3 | Density by Sand Replacement Method | IS 2720 (PART-28) |
| 4 | Density by Core Cutter Method | IS 2720 (PART-28) |
| 5 | Field CBR | IS 2720 (PART-31) |
| 6 | Surface Texture/ Texture Depth | MORT&H |
| 7 | Surface regularity of pavement | MORT&H |
| 8 | Bump Integrator | IRS SP 16 |
Core Extraction & Testing
Extracting the core samples of Concrete and Bitumen minimum 50 mm diameter and 100-150 mm length (approx.) from a selected location from Rigid, Flexible Pavement & structures covered under the study and evaluation of the properties in the laboratory from the core sample.
