6–4
4.
Prepare a correction sample that closely represents the
production mixture per ASTM D 6307, or local and state
requirements.
5.
Divide the HMA sample into a minimum of three correction
samples.
6.
Preheat the sample to 105
±
5
°
C (221
±
9
°
F).
Figure 6–1. Sample Aggregate Correction Factor Form
Date ___________ Project ________________ %AC
T
________
Sample
Number
1 2 3 4
Sample Basket, Catch
Pan, and Basket Cover
Mass (W
P
)
Sample, Sample Basket,
Catch Pan, and Basket
Cover Mass (W
T
)
Sample Weight
(W
S
=W
T
–W
P
)
True Asphalt Content
(%AC
T
)
Asphalt Content of
Sample Measured by
Oven (%AC
0
)
Correction Factor
(ACF = %AC
0
– %AC
T
)
Average Aggregate
Correction Factor
(ACF
AVG
)
Summary of Contents for NTO 4730
Page 10: ...x LIST OF TABLES Table Title Page 4 1 Oven Keys 4 3 5 1 Recommended Minimum Burn Times 5 6...
Page 30: ...2 10 NOTES...
Page 90: ...5 36 NOTES...
Page 110: ...6 20 NOTES...
Page 136: ...Appendix A 16 NOTES...
Page 148: ...Appendix C 6 NOTES...
Page 156: ...Index 8 NOTES...
