5 Types of Road Tar - Civil Engineering

Tuesday, 23 April 2019

5 Types of Road Tar

Road Tar

Tar is the viscous liquid obtained by the destructive distillation of coal or wood in the absence of. 

5 Types of Road Tar

There are 5 types(grades) of road tars viz RT-1, RT-2, RT-3, RT-4, RT-5 based on their viscosity and other properties.

RT-1 has the lowest viscosity and used for surface painting under exceptionally cold weather.

RT-2 is recommended for standard surface painting under normal Indian climate condition.

RT-3 may be used for surface painting, renewal coats and premixed top course and light carpets.

RT-4 is generally used for premixing tarmacadam in base course.

RT-5 has the highest viscosity and may be used for grouting purpose.

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