Specific Gravity Tester
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Ongoing, First published Jan 11
Specific Gravity Tester determines the theoretical 
maximum specific gravity of bituminous mixtures in 
accordance to ASTM D2041 Standard Test Method for 
Theoretical Maximum Specific Gravity of Bituminous 
Mixtures (Vacuum process). Adopted with single chip 
machine technology to shake a loose asphalt mixture 
sample submerged in water. Vacuum is applied into the 
sample, to extract out the air bubble.
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