Bitumen Forms of bitumen Bitumen Emulsion Blown Bitumen Cut-Back Bitumen Plastic Bitumen Straight Run Bitumen For vedio link https://youtu.be/BUMd7CKcBV8

1. Prepared
By
Er. Sanjeev singh
snjv432@gmail.com

2. CONTENT
• Bitumen
• Forms of bitumen

3. BITUMEN
• The bitumen is the binding material which is present in asphalt. It is
also sometime called the mineral tar.
• It is obtained by partial distillation of crude petroleum.
• It is chemically a hydro-carbon.
• It is insoluble in water, but it completely dissolves in carbon bisulphide,
chloroform, benzol, coal tar, naptha, alkalies, alkaline carbonates,
petroleum sprit and oil of turpentine.
• It is found on analysis to composed of 87 % carbon, 11% hydrogen, 2%
oxygen by weight.
• The bitumen is black or brown in colour and is obtained in solid or semi
solid state.

4. FORMS OF BITUMEN
• Bitumen Emulsion
• Blown Bitumen
• Cut-Back Bitumen
• Plastic Bitumen
• Straight Run Bitumen

5. BITUMEN EMULSION
• It is a liquid product containing bitumen to great extent in an
aqueous medium.
• The bitumen is in a very finely divided state and it is suspended in the
aqueous medium with the help of some suitable stabilizing agents.

6. BLOWN BITUMEN
• It is a special type of bitumen which is obtained by passing air under
pressure at a higher temperature.
• Such bitumen can be used as roofing and damp-proofing felts, in the
manufacture of pipe asphalts and joint fillers, as heat insulating
material, etc.

7. CUT-BACK BITUMEN
• It is obtained by fluxing asphaltic bitumen in presence of some
suitable liquid distillates of coal tar or petroleum.
• It can be applied cold as a bitumen paint.

8. PLASTIC BITUMEN
• It consists of bitumen, thinner and a suitable inert filler.
• The amount of inert filler is about 40% to 45% .
• It is used for filling cracks in masonry structure, for stopping leakages,
etc.

9. STRAIGHT RUN BITUMEN
• When the bitumen is being distilled to a definite viscosity or
penetration without further treatment , it is known as the straight run
bitumen.