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Our engineering team includes industry leaders, PhDs, former DOT employees, and young engineers beginning their careers. We take pride in working together, taking ownership of project tasks, and being inclusive.We have you covered in Arizona, Colorado, Idaho, Texas, and Utah.

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  • Evaluate your concrete with a variety of tests 

    EVALUATE YOUR CONCRETE

    Petrography offers in-depth evaluation of your concrete so you can feel confident in the quality, reliability, and structural integrity of the material itself and all projects utilizing it. Trust us to use a variety of methodologies to investigate your concrete’s characteristics and ensure proper usage. 

  • Find out more about our variety of tests 

    OUR VARIETY OF TESTS

    • Alkali-silica reactivity 
    • Chloride ion content 
    • Surface delamination 
    • Degree of hydration 
    • Depth of carbonation 
    • Estimated water content ratio 
    • Full petrographic examination 
    • Hardened air void analysis  

     

  • What can a Petrographer do for you? 

    WHAT CAN A PETROGRAPHER DO FOR YOU?

    Assess the quality of the processes by verifying: 

    • In-place air content and model of the structure 
    • Air content on the surface  
    • Placement or finishing problems 
    • Hydration or curing problems 

    Determine causes of premature failure and long-term deterioration of concrete, through testing: 

    • Air void system 
    • Alkali-silica reactivity (ASR) 
    • Depth of carbonation 
    • Chloride ion content 
    • Water/cement ratio 
    • At the surface and depth of the rebar 
    • Compressive strength 
    • Unit weight

  • Hardened Air Void Analysis (ASTM C457) 

    HARDENED AIR VOID ANALYSIS (ASTM C457)

    Air voids, an important component of concrete, are dispersed uniformly throughout the concrete to improve durability and workability. Air voids improve durability by increasing freeze-thaw and scaling resistance. Air voids improve workability by reducing bleeding and segregation.

  • Chloride ion content 

    CHLORIDE ION CONTENT

    Testing is often conducted to determine the amount of chloride ions (typically from deicing salts) on the surface of the damaged concrete.

  • Other Services

    OTHER SERVICES

    Cracking Investigation  

    Unexplained cracking often requires a visual inspection or sampling of cores to determine potential cause.

    Degree of Hydration 

    Concrete hydration occurs when the paste hardens and gains strength. The degree of hydration is dependent on curing temperature, age, curing conditions (available of water), and water-cement ratio of the concrete. 

    Depth of Carbonation 

    Carbonation is a type of concrete distress that occurs when carbon dioxide from the air interacts with the concrete resulting in a reduction the pH of the concrete. 

    Estimated Water-Cement Ratio 

    The water-cement (w/c) ratio of concrete is a large indicator of compressive strength and durability. 

    Full Petrographic Examination 

    Often determining the quality of the concrete and potential causes of concrete distress requires a full petrographic examination and, combination of petrographic techniques. This technique can include macroscopic testing, microscopic testing, and/or chemical testing.