1. Highway Engineering CE 431
THE ASPHALT INSTITUTE METHOD
Eng. Ali Mohammed Babalghaith

2. THE ASPHALT INSTITUTE METHOD
Full depth asphalt concrete.
Asphalt concrete surface and emulsified asphalt base.
Type I: Emulsified asphalt mixes made with processed dense-graded aggregates.
Type II: Emulsified asphalt mixes made with semi-processed, crusher-run, pit-run, or bank-run aggregates.
Type III: Emulsified asphalt mixes made with sands or silty sands.
Asphalt concrete and untreated aggregate base.
Base thickness of 6”.
Base thickness of 12”.

3. THE ASPHALT INSTITUTE METHOD
Full depth asphalt concrete. H

4. THE ASPHALT INSTITUTE METHOD
2- Asphalt concrete surface and emulsified asphalt base (Type I) H

5. THE ASPHALT INSTITUTE METHOD
2- Asphalt concrete surface and emulsified asphalt base (Type II)
From table
min. H

6. THE ASPHALT INSTITUTE METHOD
2- Asphalt concrete surface and emulsified asphalt base (Type III)
From table
min. H

7. THE ASPHALT INSTITUTE METHOD
3- Asphalt concrete and untreated aggregate base (Base thickness of 6”) (150 mm) H
150mm
6 in

8. THE ASPHALT INSTITUTE METHOD
3- Asphalt concrete and untreated aggregate base (Base thickness of 12”) (300 mm) H
300 mm
12 in