CONCRETE
Petrography (ASTM C:856) is the forensic analysis of hardened concrete. A petrographer uses various types of microscopes to analyze concrete and offer unique insights into the underlying causes of concrete problems. Petrography diagnoses problems such as low strength, cracking, delamination, scaling, spalling and deleterious chemical reactions. Samples typically submitted for testing include cores, cylinders and sawcut sections. Other construction materials commonly analyzed include: mortar, grout, block, stone, aggregates, cements, pozzolans, coating systems, plaster and underlayments.
DIMENSION STONE ANALYSIS
We help you solve clients’ problems with stone deterioration by giving you accurate analysis of the materials involved. Our analysis can:
- help with selection of proper materials for new construction
- provide needed facts to assess weathered and possibly damaged structures
- enable you to serve your clients to the best of your ability
- avoid litigation or assist in the process if litigation should begin
- give you and your clients peace of mind
AGGREGATE
A large portion of our work involves the microscopic analysis of concrete aggregate. Utilizing optical microscopes, we can foresee problems in aggregate sources which can impact the quality of the resulting concrete. We can perform petrographic analysis (ASTM:C295) on any type of aggregate source, including synthetic or man-made aggregates.
ALKALI-SILICA REACTIVITY
Aggregate Alkali-Silica Reactivity (ASR) testing represents an integral part of ongoing laboratory testing services at American Engineering Testing, Inc. (AET). AET adheres to an internal quality assurance program meeting the requirements of ISO 17025, General Requirements of Competence for Testing and Calibration Laboratories. We can test for ASR using any of seven accepted methods.
MASONRY
AET routinely performs microscopic analysis of mortar and concrete masonry units (CMU's). AET provides information in accordance with ASTM: C1324, Section 8. However, by utilizing a modification of ASTM: C457, thin section microscopy, and unit weight data, AET can determine the mix design of existing mortar.
For more information on Petrography, please contact Gerard Moulzolf at AET's Bonita Springs, FL office. |
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