Table of Contents
What are the lab test on bitumen?
Bitumen Tests- Softening Point Test The test is conducted by using Ring and Ball apparatus. A brass ring containing test sample of bitumen is suspended in liquid like water or glycerin at a given temperature. A steel ball is placed upon the bitumen sample and the liquid medium is heated at a rate of 5 C per minute.
What are the properties of bitumen and asphalt?
General Properties of Bitumen They have no specific melting, boiling or freezing point. Bitumens are insoluble in water. They are highly impermeable to the passage of water. They are generally hydrophobic.
Which test sample is used for tests for tar and bitumen?
The test is conducted by using Ring and Ball apparatus. A brass ring containing test sample of bitumen is suspended in liquid like water or glycerine at a given temperature. A steel ball is placed upon the bitumen sample and the liquid medium is heated at a rate of 5 degree per minute.
What are asphalt tests?
Asphalt products testing and inspection. Asphalt and asphaltic materials are tested to industry quality standards and for R&D support. Asphalt materials testing includes roofing and viscosity grading and asphalt binder testing. …
What do the basic tests on asphalt materials measure?
Many tests are used to evaluate the properties of mix designs such as voids (air content), asphalt cement content, gradation, voids in mineral aggregate (VMA), stiffness, and others to insure the quality of the mix design. There are three major methods for determining asphalt content: solvent extraction.
What are the mechanical properties of bitumen?
Low temperature stiffness and flexural properties of bitumen were determined by BBR. Flexural creep test was performed at −6, and −12 °C. Stiffness should be maximum 300 MPa and m-value (slope) should be minimum 0.30. These values indicate that the ability of bitumen against low temperature cracking.
What is bitumen and its properties?
Bitumen is defined as “A viscous liquid, or a solid, consisting essentially of hydrocarbons and their derivatives, which is soluble in trichloro-ethyelene and is substantially nonvolatile and softens gradually when heated”. It is black or brown in colour & possesses waterproofing and adhesive properties.
Is bitumen a code test?
Various tests are conducted on bitumen to assess its consistency, gradation, viscosity, temperature susceptibility, and safety….List of IS Codes Related to Bitumen Testing.
| Tests for Bitumen with IS codes | |
|---|---|
| Name of Test | IS code Number |
| Ductility test | IS: 1208-1978 |
| Softening Point test | IS: 1205-1978 |
What are the properties of asphalt?
Technical Properties of Asphalt
- Waterproof Property. Asphalt is a water-repellent material with a lightweight structure that does not dissolve in water.
- Viscosity.
- Plasticity.
- Temperature Sensitivity.
- The Stability of Asphalt in the Atmosphere.
How many types of bitumen are there?
There are three varieties of bitumen emulsion, namely, slow setting (SS), medium setting (MS) and rapid setting (RS) depending upon the stability provided by the emulsifying agent. It can be easily applied at ambient temperature, merely mixing it with aggregates for road works starts the binding process.
How do you test bitumen in asphalt?
ASPHALT TESTING LABORATORY 3. Pour the bitumen in the mold and take care not to disarrange the pieces of the mold. Pour the material in a thin stream back and forth from end to end of the mold until the mold is more than level full.
What is the objective of lab testing for bitumen?
ASPHALT TESTING LABORATORY PENETRATION OF BITUMINOUS MATERIALS OBJECTIVES: To examine the consistency of a sample of bitumen by determining the distance in tenths of a millimeter that a standard needle vertically penetrates the bitumen specimen under known conditions of loading, time and temperature.
What are the basic laboratory procedures for Asphalt Test?
ASPHALT TESTING LABORATORY PRECAUTIONS: (i) The plate assembly upon which the mould is placed shall be perfectly flat and level so that the bottom surface of the mould touches it throughout. (ii) In filling the mould, care should be taken not to distort the briquette and to see that no air pocket is within the moulded sample.
What is the typical temperature of bitumen when heated?
The whole assembly is heated at a rate of 9 °F per min. Typical values would be 240 °F for coating grade asphalts, 140 °F to 220 °F for roofing asphalt and down to 115 °F for bituminous water proofing material. Ductility test is conducted to determine the amount bitumen will stretch at temperature below its softening point.