Question: While ISSA A 1 6 5 does provide general guidance for aggregate and emulsified asphalt application rate in a chip seal treatment, the ranges provided
While ISSA A does provide general guidance for aggregate and emulsified asphalt application
rate in a chip seal treatment, the ranges provided are that only: guidance. However, the actual
application rates are extremely job specific, and may change due to gradation of the aggregate,
traffic, existing road conditions, absorption of aggregate, patches that haven't been sealed, residue
of emulsion, and other inputs. Therefore, it is important to execute an actual chip seal design.
Create and upload a spreadsheet that can calculate the emulsified asphalt quantity, given
the following values:
Quantity of chips from the board test
Dry loose unit weight of chips
Dry bulk specific gravity of chips
Traffic correction factor chip seal class I, AADT
Pavement surface correction factor smooth, nonporous
Emulsified asphalt residue
Using the spreadsheet, adjust the following values as compared to the control design
above and record the emulsified asphalt quantity. Report the asphalt quantities in a table.
State why the trend you are observing makes sense.
and
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