Asphalt Density Calculator

Calculate Asphalt Core Sample Density

Input Fields

Empty pycnometer

W₁

g

Weight of empty and dry pycnometer

With bitumen

W₂

g

Weight of pycnometer with bitumen

With water (25°C)

W₃

g

Weight of pycnometer filled with water at 25°C

With bitumen + water

W₄

g

Weight of pycnometer with both bitumen and water

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Your Results

Density of asphalt

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Asphalt Density Formula

$$\text{Density} = \frac{W_2 – W_1}{(W_3 – W_1) – (W_4 – W_2)}$$

Where:

• $$W_1$$ = weight of basket in air
• $$W_2$$ = weight of sample + basket in air
• $$W_3$$ = weight of basket in water
• $$W_4$$ = weight of sample + basket in water

This method calculates asphalt density by Archimedes’ principle, using displaced water volume.

Asphalt density is a critical parameter in pavement design and construction. It reflects how well the material has been compacted and its ability to bear loads. This formula is based on the difference between dry and submerged weights of a core sample, allowing accurate field or lab analysis using water displacement techniques.