Microscopy and Petrography

Through the scientific technique of microscopy, our researchers observe the mineralogical and chemical characteristics of concrete, aggregates, and related minerals. Petrographic examination of concrete provides descriptive information such as the degree of cement hydration, estimation of water-cement ratio, the extent of paste carbonation, and evidence of alkali-aggregate reaction, sulfate attack, or other chemical and physical distress. In addition, petrographic analysis of concrete helps correlate observed field performance with material properties, mix design, and exposure conditions to identify root causes of distress and to recommend remediation.