by April Snyder | Feb 21, 2022 | Uncategorized
One of the most common causes of structural concrete deterioration is corrosion of the reinforcing steel within the concrete member. Engineers dealing with concrete exposed to chlorides are likely asked to answer these questions: How resistant is the concrete to...
by April Snyder | Jan 9, 2019 | Materials Insights - Construction Materials
Oxidation of Iron Sulfide Minerals Iron sulfides are accessory minerals found in a variety of rock types, with pyrite (FeS2) and pyrrhotite (Fe1-xS) (x = 0 to 0.2), being most common. Under some conditions, these minerals can undergo oxidation reactions that have the...
by April Snyder | Dec 18, 2014 | Case Studies - Construction Materials, Construction Materials, Oil and Gas
If you want solid answers to your concrete questions, a petrographer can help. Petrographers use a combination of visual inspection, microscopy, and chemical techniques to examine concrete cores. These analyses provide a basis for understanding the condition of the...
by April Snyder | Dec 9, 2014 | Case Studies - Construction Materials, Construction Materials
According to a 2013 Report Card for America’s Infrastructure, 1 in 9 bridges in metropolitan areas are structurally deficient. The estimated investment needed to eliminate the backlog of deficient bridges by 2028 is $20.5 billion annually—that’s $8 billion more per...