Meredith Strow is a Principal Petrographer. Prior to joining DRP, Meredith was a petrographer at an engineering and materials testing laboratory in Skokie, IL. Meredith’s experience includes working with concrete affected by freeze-thaw damage, salt scaling, chemical attack, alkali-aggregate reactions (ASR and ACR), delayed ettringite formation (DEF), and fire damage, among other durability issues. On the troubleshooting front, Meredith has worked on assessments of concrete quality, evaluating strength and setting issues, and evaluating delamination and other surface defects. In addition to her background in petrographic examination, Meredith has expertise with an array of aggregate testing methods, as well as experience with US Army Corps of Engineers deleterious aggregate testing. In addition to working with concrete and other cementitious construction materials and aggregates, Meredith has also performed metallurgical testing for failure analysis, corrosion, and welding issues. Meredith earned an undergraduate degree in geology from Illinois State University and a graduate degree in materials engineering from University of Illinois at Chicago. She is an active member of the American Concrete Institute (ACI) on the local level, currently serving as a director on the board of the Rocky Mountain Chapter and in the past serving as a director on the board of the IL Chapter. Meredith is also active in ACI on the national level as she is a member of Durability (201), Aggregates (221), and Pozzolans (240) committees. Meredith is also a member of the American Society of Testing and Materials (ASTM) and is part of Concrete and Concrete Aggregates (C09), Mortars and Grouts for Unit Masonry (C12), and Manufactured Masonry Units (C15) committees.