⚖️ Asphalt Weight per Cubic Foot
Calculate asphalt density, weight by mix type, and temperature effects
Standard Asphalt Density
Mix Presets
Standard (145)
Base Course (140)
Surface Course (150)
Open Graded (135)
SMA (155)
Asphalt Weight Results
Density
145.0
lb/ft³
kg/m³
2,322
kg/m³
Specific Gravity
2.32
SG
tons per 100 ft³
7.25
tons
📋 Conversion Factors
1 cubic foot weighs:
145.0 lbs
1 cubic yard weighs:
3,915 lbs (1.96 tons)
1 cubic meter weighs:
2,322 kg (2.32 tonnes)
1 ton occupies:
13.8 ft³ (0.51 yd³)
📊 Volume to Weight
| Volume | Weight (lbs) | Weight (tons) | Weight (metric tonnes) |
|---|---|---|---|
| 1 ft³ | 145 | 0.073 | 0.066 |
| 10 ft³ | 1,450 | 0.725 | 0.658 |
| 100 ft³ | 14,500 | 7.25 | 6.58 |
| 1 yd³ | 3,915 | 1.96 | 1.78 |
📊 Asphalt Mix Density Reference
| Mix Type | Density (lb/ft³) | Density (kg/m³) | Bitumen Content | Air Voids | Typical Use |
|---|---|---|---|---|---|
| Standard Hot Mix | 145 | 2,322 | 5-6% | 3-5% | General paving |
| Dense Graded Base | 140 | 2,242 | 4-5% | 5-7% | Base courses |
| Dense Graded Surface | 150 | 2,402 | 5.5-6.5% | 3-4% | Wearing courses |
| Open Graded | 135 | 2,162 | 4-5% | 12-18% | Drainage layers |
| Stone Mastic (SMA) | 155 | 2,482 | 6-7% | 3-4% | Heavy traffic |
| Porous Asphalt | 130 | 2,082 | 4.5-5.5% | 18-22% | Permeable pavement |
| High Modulus (EME) | 160 | 2,562 | 5-6% | 2-3% | Heavy duty pavement |
| Warm Mix | 144 | 2,306 | 5-6% | 3-5% | Reduced temp paving |
| Cold Mix | 138 | 2,210 | 4-5% | 8-12% | Patches, temporary |
🌡️ Temperature Effect on Asphalt Density
* Approximate values - thermal expansion coefficient varies with mix design
Frequently Asked Questions
How much does asphalt weigh per cubic foot?
Standard asphalt weighs 145 pounds per cubic foot (2,320 kg/m³) on average. Dense-graded mixes: 140-150 lb/ft³, Open-graded: 130-140 lb/ft³, Stone mastic: 150-160 lb/ft³. Weight varies with aggregate type, bitumen content, and compaction.
What is the density of hot mix asphalt?
Hot mix asphalt density typically ranges from 140-150 lb/ft³ (2,240-2,400 kg/m³). The most commonly used value is 145 lb/ft³ for estimating purposes. Actual density depends on mix design, aggregate specific gravity, and compaction level.
How does temperature affect asphalt weight?
Asphalt expands when heated, reducing density. At 300°F (149°C), hot mix weighs about 140 lb/ft³. At ambient temperature, compacted asphalt returns to 145 lb/ft³. Volume increases approximately 3-5% at paving temperatures.
How many cubic feet in a ton of asphalt?
At 145 lb/ft³, 1 ton (2,000 lbs) of asphalt occupies 13.8 cubic feet (0.51 cubic yards). At 140 lb/ft³: 14.3 ft³, at 150 lb/ft³: 13.3 ft³. Coverage varies with density and compaction.
What affects asphalt density?
Key factors: Aggregate specific gravity (2.5-2.8), Bitumen content (4-7%), Air voids (3-8%), Compaction level, Aggregate gradation (dense vs open), and Temperature during placement.
How do you convert cubic feet to tons of asphalt?
Tons = (Cubic feet × Density in lb/ft³) ÷ 2,000. For 100 ft³ at 145 lb/ft³: (100 × 145) ÷ 2,000 = 7.25 tons. For cubic yards: (Cubic yards × 27 × Density) ÷ 2,000 = tons.
What is the specific gravity of asphalt?
The specific gravity of asphalt mixtures ranges from 2.2 to 2.5, with 2.32-2.40 being typical for dense-graded mixes. Bitumen itself has a specific gravity of 1.01-1.06, while aggregates range from 2.5-2.8.
How much does cold mix asphalt weigh?
Cold mix asphalt typically weighs 135-140 lb/ft³ (2,160-2,240 kg/m³). It has higher air voids (8-12%) and lower density than hot mix due to less compaction and different binder formulation.