Trenchless Technology

SEP 2018

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18 Trenchless Technology Center Newsletter S E P T E M B E R 2 0 1 8 Trenchless Technology Center Newsletter The TTC was recently selected by NASSCO to provide a comprehensive evaluation of air emissions from steam-cured cured-in-place pipe (CIPP) installations and potential impacts on workers and surrounding communities. The TTC will partner with the U.S. Army Corps of Engineers' Engineer Research Development Center (ERDC) on this important study. This project is Phase 2 of a larger study and calls for measurement of styrene and other organic compounds at six CIPP installation sites, representing various pipe diameters and lengths, in order to capture variation in emissions. Measurements will be conducted before, during, and after curing at the termination manhole, as well as various loca- tions in the surrounding outside area and inside nearby buildings. Worker exposure will also be measured via per- sonal exposure monitors. Finally, dispersion modeling will be conducted to estimate compound concentrations at a large number of locations for a wide variety of meteorologi- cal conditions. Measured and modeled concentrations will be compared to appropriate health-based action levels to determine if any potential health risks exist for workers or citizens in the surrounding communities. Data collection at the first four sites is expected to occur in September and October in Shreveport, Louisiana, with the remaining two sites to be determined at a later date. This project is being led by PI Dr. Elizabeth Matthews, Assistant Professor of Civil Engineering, who specializes in sustainable and resilient engineering and construction prac- tices. Co-PIs for the project are TTC Associate Director for Research, Dr. Shaurav Alam and TTC Director, Dr. John Matthews, with support from several other TTC researchers and students. For more information on this project please contact Dr. Elizabeth Matthews at ematt@latech.edu. TTC Product Development Earns International Recognition The TTC recently earned three awards at the Silicon Valley International Inventions Festival in Santa Clara, California, for their invention, Lockblock. The TTC team was comprised of TTC Research Scientist, Dr. Amin Azimi, TTC Director, Dr. John Matthews, Mrs. Asma Bagher Pour Hamedani, and TTC Lab Manager, Mr. Chris Morgan. The Lockblock product earned the Gold Medal from the festival, as well as the Best American Inventor Award from the United Inventors Association and the Special Prize from the Korean Invention Promotion Association. The completion included over 100 products from more than 20 countries. Lockblock is a new generation of sustainable, multi-functional, interlocking mor- tar-less concrete block that increases construction produc- tivity, safety and resiliency, while decreasing construction duration, labor, and cost. Lockblock's special design provides self-alignment facilitated by the interlocking features in both vertical and horizontal directions and works as a adjustable damper to absorb energy from vibration sources such as earthquakes. The product uses interlocking geometry to enable mortar-less construction, as well as lightweight, recycled aggregates and green concrete to improve the duc- tility of the system and to reduce the environmental foot- prints. The TTC acknowledges the leadership of Dr. Azimi with this development and is encouraged by several new products currently under development at the TTC. For more details about the award-winning project, please contact Dr. Amin Azimi at azimi@latech.edu. Barbera Underground Infrastructure Research & Training (BUIRT) Facility TTC is honoring the past while driving the future through the establishment of the Barbera Underground Infrastructure Research and Training (BUIRT) Facility. This facility honors the past through the recognition of the contributions of the TTC Selected to Lead NASSCO Study on Emissions from Steam-Cured CIPP Projects Mrs. Hamedani (second from left) and Dr. Azimi (second from right) Receiving Awards at International Inventions Festival.

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