Leaders in Petrographic Analysis


When concrete mix designs and other building materials need an independent opinion, AET's Petrography Group can perform rock and sand testing services for materials produced or used for construction, transportation systems or product development.

We offer nationally recognized petrographic concrete testing along with other materials used for airfields, roadways, foundations and structures for commercial, industrial, agriculture or government use. Our certified independent asphalt, cement and chemistry labs can also test and validate pavement materials and a variety of admixture and chemical products. You will receive a detailed report along with practical recommendations for solving a problem or construction challenge.

Our wide range of expertise in petrographic services allows us to identify the cause(s) of a wide range of problems you may experience, including but not limited to:

  • Alkali-carbonate reaction (ACR)
  • Alkali-silica reaction (ASR) Cracking
  • Delamination
  • Fire damage
  • Low Strength
  • Popouts
  • Scaling or spalling

AET can also provide experienced forensic analysis of the following materials:

  • Aggregate
  • Block
  • Brick
  • Cement
  • Concrete
  • Fiberglass
  • Grout
  • Mortar (modern and historic)
  • Plaster
  • Pozzolans
  • Rock
  • Underlayments


  • AASHTO T 277 Rapid Chloride Ion Permeability
  • ASTM C295 Petrographic Examination of Aggregates of Concrete
  • ASTM C457 Microscopical Determination of Parameters of the Air-Void System in Hardened Concrete
  • ASTM C856 Petrographic Examination of Hardened Concrete
  • ASTM C1202 Rapid Chloride Ion Permeability
  • ASTM C1324 Examination and Analysis of Hardened Masonry Mortar
  • ASTM C1721 Petrographic Examination of Dimension Stone
  • ASTM C1760 Bulk Electrical Conductivity of Hardened Concrete
  • ASTM D4992 Evaluation of Rock to be Used for Erosion Control
  • ASTM D5313 Evaluation of Durability of Rock for Erosion Control Under Wetting and Drying Conditions
  • ASTM D6473 Absorption and specific gravity of Rock for Erosion Control
  • CRD-C169 Evaluation of Durability of Rock for Erosion Control Under Wetting and Drying Conditions

Serving owners, general contractors, project managers, engineers and material suppliers and manufacturers, AET understands the importance of anticipating the goals and lifespan of materials, managing your risk and adhering to project deadlines.

Include our team to more accurately estimate construction projects or to answer specific questions about the quality of proposed or existing materials.

When you work with AET's Petrography Group, you also have access to the following services and engineering experts:

Asphalt Lab
Building Technology
Cement/Concrete Lab
Compliance & Permits
Construction Materials Evaluation
Construction Services
Nondestructive Testing
Subsurface Investigation & Cleanup