The pre-conference short course offerings include two full-day courses and one half-day (afternoon) course. All short courses will be held on November 4  at the conference main venue. Short course registration is separate from the full conference (November 5 & 6) registration, but all short course participants are welcomed to attend the GAP 2019 opening reception on the evening of November 4. Conference registration and short course registration may be booked at the same time via the GAP 2019 registration page.


See course descriptions below. Seats for each class are limited.
Costs: Full-Day Course, USD $325; Half-Day Course, USD $225


Dr. Jorge Zornberg (University of Texas – Austin)
Dr. Erol Tutumluer (University of Illinois – Urbana-Champaign)

8:00 am – 5:00 pm (with one-hour lunch break)

Geosynthetics provide sustainable alternatives for enhanced performance, durability and cost-effectiveness of pavements, railways and airfields. This short course provides an integrated view of the multiple applications of geosynthetics in these three transportation modes. This includes the mechanisms involved in the different applications, the identification of relevant properties, the available design methodologies, and case histories involving the use of geosynthetics in pavements, railways and airfields.

An outline of the main topics to be covered is as follows:

  • Welcome & Objectives
  • Geosynthetics: Types and Functions
  • Structural Capacity of Pavements, Railways and Airfields
  • Overview of Geosynthetic applications in Pavements
  • Overview of Geosynthetics in Railways and Airfields
  • Geosynthetics for Retardation of Asphalt Reflective Cracking
  • Geosynthetics for Reduction of Subgrade Soil Intermixing
  • Geosynthetics for Stabilization of Base and Ballast
  • Geosynthetics for Stabilization of Subgrades
  • Geosynthetics for Mitigation of Environmental Loads
  • Geosynthetics for Enhanced drainage
  • Path Forward & Closure

This is a full-day (8 hrs.) short course, organized on behalf of the North American Chapter of the International Geosynthetics Society (IGS-NA). Course attendees will complete the short course with a working knowledge on the characteristics of different geosynthetics and their use to solve specific problems in the structural design of pavements, railways and airfields.

Prof. Soheil Nazarian (University of Texas – El Paso)
Dr. George Chang (The Transtec Group)
Prof. Mehran Mazari (California State University, Los Angeles)

1:00 – 5:00 pm

The primary tool currently used for quality management of earthwork and unbound aggregates is a nuclear density gauge (NDG) to ensure appropriate density and moisture content. Significant research effort has been devoted to understanding and implementing stiffness-based quality control using the intelligent compaction (IC) concept, along with spot tests using modulus-based devices. When implemented properly, IC technology can provide QC over 100% of compacted geomaterials for assets such as roadways, railbeds, airfields, and other transportation infrastructure (major shortcoming of the spot testing) to assure the uniformity of the compaction process. This will lead to better performing transportation assets and lower maintenance costs. Even though the application of the IC technology in construction QC can be straight forward, several research efforts are on the way to address the gaps that prevent the IC technology from being used for the eventual construction acceptance of the geomaterials.