What is the percentage of bitumen in DBM ?

Question

Accepted Answer

The percentage of bitumen in DBM varies depending on the specific mix design and project requirements.

DBM stands for Dense Bituminous Macadam, which is a type of road construction material.
The percentage of bitumen in DBM typically ranges from 4% to 6% by weight.
The exact percentage of bitumen is determined based on factors such as traffic load, climate conditions, and desired durability.
Higher percentages of bitumen are used in areas with heavy traffic or extreme weather conditions.
The percentage of bitumen can also vary based on the aggregate gradation and the presence of additives or modifiers.

Accepted Answer

Not only the percentage of Bitumen but the grade is also prime important i.e 70/80 or 80/100 like

Accepted Answer

Grade 1 DBM have taken 1-4%
Grade 2 DBM have taken 2.5 -4% of total weights

Accepted Answer

DBM has 2 grades as per MORT&H sec 500 DBM grade 1 has 4% min bitumen by weights of mass and DBM grade 2 has 4.5% min bitumen by weight of mass

Accepted Answer

as per VSI material our DBM mixed the Bitumen % is 4.65% of Bitumen.

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