1. Service Life of Hot Mix Asphalt using PERMIT
Alejandra Escajeda, Danniel Rodriguez, Imad Abdallah, Soheil Nazarian 1

2. Introduction asphalt pavements mix types
permeable friction course (PFC)
stone mastic asphalt (SMA)
performance design mixes
conventional dense graded mixes.
life-cycle cost analysis
Loading Location
Environmental conditions,
Construction
Reconstruction
Maintenance jobs

3. Objective
The objective of PERMIT is to analyze the mix type performance based on existing and historical data to present reliable service life estimation for different mix types. The tool can be accessible to all transportation agencies. The software is called Performance Life of HMA Mixes in Texas (PERMIT) and its features include:
Access to road construction, reconstruction, and maintenance data;
Derived statistical data with computed analysis;
Easily and securely accessible through an internet browser, and
Visual representation of data acquisition through Google maps.
Include construction quality and type of construction (new vs. overlay) as stated in the proposal?

4. Methodology Letting Database
Design and Construction Information System (DCIS)
Pavement Management Information System (PMIS)
Construction Plan

5. Permit Navigation
The query builder’s function consists of user-selected:
mixture category,
mix type,
district/statewide or climatic region.
Furthermore the selection can be filtered by:
traffic category,
facility type,
pavement type, and
truck percentage of annual average daily traffic (AADT).

6. Descriptive Statistics of Service Life of HMA Mix

7. Service Life Distribution of Type C- mix for In-Service sections

8. Performance Service Life of Common HMA Mixes

9. Conclusion
These types of pavements are used to study the performance life of asphalt mixes or hot mix asphalt (HMA) mixes.
Performance life of an HMA mix is currently recommended based on experience and very limited data.
A combination of independent and mutually exclusive databases were managed:
through algorithms, and;
presented using a GUI that displays the results of the mix performance.
The software created is called PERMIT it merges databases such as:
Letting Database;
DCIS, and;
PMIS.
This online program can be continuously upgraded as annual data is collected.
The PERMIT database system has three essential components:
the Query Builder;
Graphics Engine, and;
Statistic Generator.
PERMIT provides a variety of filters, which allow users to reach a more concrete decision.
This tool has the potential, in the future, to be utilized nationwide transportation departments.

10. Acknowledgements THANK YOU! Dr. Soheil Nazarian Dr. Imad Abdallah
Sonya Brindle
THANK YOU!