Enter the median particle size by typing in values. Typical values of selected aggregates used in Indiana are provided in the table below.
|Aggregate Type||Median Particle Size|
Enter the Flakiness Index by typing in values in the box.
Enter loose unit weight by typing in values in the box. ASTM C29 covers the determination of the loose unit weight of coarse aggregates.
Enter the bulk specific gravity by typing in values in the box. ASTM C127 covers the determination of the specific gravity of coarse aggregates.
Enter the wastage factor by typing in values in the box. The factor accounts for the amount of aggregates being dislocated by passing vehicles. A typical value is 10 %.
Enter the equipment correction factor by typing in values in the box. The factor accounts for the discrepancy occurring between designed rate and applied rate in the field. Finding from the study SPR-3087: JTRP/SPR-3087: Performance Evaluation of Seal Coat Materials and Designs recommend using the factor. It should be noted that the equipment factor varies by equipments used, thus limited application exits within the factor.
Enter the traffic factor from one of five categories corresponding to the average daily traffic for road segments on which the seal coat will be applied.
|Average Daily Traffic||Traffic Factor|
|100 to 500||0.75|
|500 to 1000||0.70|
|1000 to 2000||0.65|
Enter the surface correction factor from one of five categories corresponding to the surface condition of road segments on which the seal coat will be applied.
|Surface Condition||Surface Correction Factor|
|Black, flushed asphalt||-0.03|
|Slightly porous, oxidized||0.03|
|Slightly pocked, porous, oxidized||0.06|
|Badly pocked, porous, oxidized||0.09|
Enter the water absorption of aggregates used for the seal coat application. ASTM C127 covers determination of water absorption of coarse aggregate.
Enter the asphalt content of the emulsion by typing in values. Typical values of selected emulsions used in Indiana are provided in the table below.
|Emulsion Type||Asphalt Content|