Title:
The Petrographic Report
Author(s):
Richard D. Stehly and Adam Brewer
Publication:
Concrete International
Volume:
33
Issue:
4
Appears on pages(s):
60-65
Keywords:
sampling, test methods, observations, geology
DOI:
Date:
4/1/2011
Abstract:
Petrographic reports are normally requested because a concrete did not perform as expected. Petrography is not one single technique or set procedure, and the result—the report—does not comprise simple data that can be readily understood or compared with other test results. Rather, petrography uses a suite of techniques, primarily employing optical microscopy, and requires professional judgment in selecting the locations from which to extract cores, selecting the sample from a core for detailed examination, determining appropriate specimen preparation and storage techniques, obtaining data and observations, and interpreting the results. Recommendations are made for those seeking petrographic reports, with specific focus on providing the petrographer with adequate samples and information.