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A plate to slide beneath the baskets to collect any aggregate dust or particles.
Eliminates worker exposure to carcinogenic chemical solvents and removes toxic waste disposal fees.
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The asphalt will be dry, brittle, and highly prone to cracking, raveling, and water damage. astm d6307 pdf
An external balance with a resolution adequate for weighing the large sample sizes required by the mix design specifications.
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The difference in mass before and after ignition determines the binder content. Key Equipment Required A plate to slide beneath the baskets to
The high heat combusts and burns off the liquid asphalt binder. The remaining aggregate is weighed.
The measured asphalt content is then corrected by adding the ACF:
is a standard test method developed by ASTM International. Its full title is the "Standard Test Method for Asphalt Content of Asphalt Mixture by Ignition Method." This method is used to find out how much asphalt cement (the binder) is in a sample of asphalt mixture or pavement. It works by burning off the asphalt in a special furnace at high temperatures. This modern technique does not use solvents, making it faster and better for the environment compared to older extraction methods. The remaining aggregate can also be used for gradation analysis following another standard, D5444. An external balance with a resolution adequate for
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: Provides a precise measurement of the amount of asphalt binder in a mix by burning it off in a furnace at high temperatures (typically around
ASTM D6307 provides detailed instructions on sample size based on nominal maximum aggregate size. For example, a mixture with a 25 mm (1 in.) NMAS requires a larger sample mass than a 9.5 mm (3/8 in.) mixture to ensure representativeness.