The formula to estimate the asphalt temperature (AT) is:
\[ AT = AT_{air} + (C \times WS) \]
Where:
Asphalt temperature is the temperature of the asphalt surface, which can differ from the air temperature due to factors like solar radiation, wind speed, and material properties. Accurate measurement or estimation of asphalt temperature is crucial for paving operations, as it affects the curing time, compaction, and overall quality of the asphalt pavement.
For example, if the air temperature (ATair) is 85°F, the wind speed (WS) is 10 mph, and the constant (C) is 0.5, the asphalt temperature (AT) can be calculated as follows:
\[ AT = 85 + (0.5 \times 10) = 85 + 5 = 90 \text{ °F} \]
So, the estimated asphalt temperature for these values is 90°F.
Definition: The temperature range for asphalt is the range within which asphalt can be effectively laid and compacted.
Formula: \( \text{Temperature Range} = \text{Max Temperature} - \text{Min Temperature} \)
Example: \( \text{Temperature Range} = 160 - 120 \)
Definition: A hot asphalt temperature chart shows the recommended temperatures for laying hot asphalt.
Formula: \( \text{Temperature} = \text{Mix Temperature} \)
Example: \( \text{Temperature} = 150 \)
Definition: The relationship between air temperature and asphalt temperature is crucial for determining the appropriate conditions for laying asphalt.
Formula: \( \text{Asphalt Temperature} = \text{Air Temperature} + \text{Adjustment Factor} \)
Example: \( \text{Asphalt Temperature} = 25 + 125 \)
Definition: The temperature at which asphalt is laid is critical for ensuring proper compaction and durability.
Formula: \( \text{Laying Temperature} = \text{Mix Temperature} \)
Example: \( \text{Laying Temperature} = 140 \)
Definition: The temperature of asphalt during placement is essential for achieving the desired compaction and performance.
Formula: \( \text{Placement Temperature} = \text{Mix Temperature} \)
Example: \( \text{Placement Temperature} = 145 \)
Definition: This calculator estimates the amount of asphalt roofing material needed for a given area.
Formula: \( \text{Material Needed} = \frac{\text{Roof Area}}{\text{Coverage per Unit}} \)
Example: \( \text{Material Needed} = \frac{100}{10} \)
Definition: The relationship between asphalt temperature and air temperature is important for determining the appropriate conditions for laying asphalt.
Formula: \( \text{Asphalt Temperature} = \text{Air Temperature} + \text{Adjustment Factor} \)
Example: \( \text{Asphalt Temperature} = 30 + 120 \)
