What is petrography?
Petrography is the microscopic analysis of rocks, minerals, and other materials used to determine their mineralogical composition, fabric, and physical...
Petrography
Who uses Petrography?
Used by engineers, consultants, contractors, DOTs, attorneys, and owners, petrography often provides the evidence needed to answer the most important...
When is petrography used?
Petrography is most valuable during: Failure investigations – determining why a structure deteriorated. Pre-construction material qualification – assessing aggregate suitability....
What are the common ASTM standards used for petrography?
ASTM C856: Used for hardened concrete investigations ASTM C856 is the standard practice for petrographic examination of hardened concrete. ASTM...
How is petrography performed?
Our petrographer typically use: • Visual examination of the sample • Stereo microscopy to inspect surfaces and fracture features •...
Questions petrography can answer?
A petrographic examination can help answer questions such as: Why are my compressive strength values less than the design? How...