WHAT ARE THE DIFFERENCES BETWEEN ORDINARY AND PERFORMANCE GRADED BINDERS?

Bitumen properties

Comparison between Ordinary & Performance Graded Binders The primary differences between ordinary graded binder and performance graded binder is given in the following table Ordinary Graded Binders Performance Graded Binders Binders are graded either based upon penetration or viscosity Binders are graded based upon pavement temperature, which are close to in service conditions of pavements … Read more

4 DIFFERENT FORMS OF BITUMEN USED IN ROAD CONSTRUCTION

Bitumen properties

Different Forms of Bitumen 1. Cutback Bitumen Normal practice is to heat bitumen to reduce its viscosity. In some situations preference is given to use liquid binders such as cutback bitumen. In cutback bitumen suitable solvent is used to lower the viscosity of the bitumen. From the environmental point of view also cutback bitumen is … Read more

VISCOSITY TEST OF BITUMEN (IS 1206-PART-2)

Pic-5 Viscosity test of bitumen

ABSOLUTE VISCOSITY TEST OF BITUMEN Reference IS: 1206 (Part 2) – Method for Testing Tar and Bitumen Materials: Determination of Absolute Viscosity Test Equipment The following testing equipment is needed to measure absolute viscosity of viscosity graded paving bitumen (IS:73-2006) at 60 C in accordance with IS:1206 (Part 2) (similar to ASTM D 2171), which … Read more

BITUMEN EMULSION – WHAT, WHY & HOW?

Bitumen Emulsion - what, why & how

Definition – What is Bitumen Emulsion? Bitumen emulsion is a mixture of water & bitumen. Hey wait, we know that bitumen is a oil product and it cannot be mixed with water. That is why we add an emulsifier (a surface active agent) with water before adding bitumen. Addition of emulsifier with water facilitates breaking … Read more

9 TEST TO CHECK QUALITY OF BITUMEN FOR USE IN ROAD WORK

Fig-3 Softening Point Test Setup

Lab Tests on Bitumen to Check Quality Various tests are conducted on bitumen to assess its consistency, gradation, viscosity, temperature susceptibility, and safety. There are a number of tests to assess the properties of bituminous materials. The following tests are usually conducted to evaluate different properties of bituminous materials. Penetration test Ductility test Softening point … Read more

6 CHARACTERISTIC PROPERTIES OF BITUMEN

Bitumen 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. It is obtained by refinery processes from petroleum, and is also … Read more

15+ DIFFERENCES BETWEEN BITUMEN AND TAR USED IN ROAD CONSTRUCTION

difference between bitumen and tar

The following are the differences between bitumens and tars. The weathering properties of bitumens are superior to those of tars. Generally greater deterioration is produced in tar than in bitumen when exposed to equal weather conditions. Bitumens have a better durability and resistance to weathering than tars. Tars are more susceptible to temperature changes than … Read more

RESIDUE OF BITUMEN EMULSION ON 600 MICRON SIEVE (IS-8887-2004)

BITUMEN EMULSION TEST - RESIDUE ON 600 MICRON SIEVE

Determination of Residue of Bitumen Emulsion Purpose This test is done for the determination of residue of bituminous emulsion by sieving through 600-micron is sieve. Apparatus 600 Micron IS Sieve — A circular sieve approximately 100 mm in diameter and 40 mm height. Metal or Glass Dish — A small metal or glass dish about … Read more

DETERMINATION OF BITUMEN CONTENT IN THE BITUMINOUS MIX

Centrifuge apparatus used for binder content test of bituminous mix

Bitumen Content Test of a Bituminous Mix Purpose The test determines the bitumen content in the bituminous mix by cold solvent extraction. Apparatus & Solvent Centrifuge apparatus Trichloroethylene Procedure Take a representative sample of about 500 g, weigh it exactly and place it in the bowl of the extraction apparatus (W1). Cover the sample with … Read more

VISCOSITY TEST OF BITUMEN EMULSION BY SAYBOLT FUROL VISCOMETR (IS-3117-2004)

Saybolt Furol Viscometer - used for viscosity test of bitumen emulsion

Test for Bitumen Emulsion: Viscosity by Saybolt Furol Viscometer Purpose Viscosity indicates the resistance to flow due to its internal friction. Higher the viscosity, lower the rate of flow. The test is conducted to see if it is in the specified range. The Test result is expressed in seconds for the flow of 60 cc … Read more