Our Tools

DRP uses advanced equipment and techniques for the preparation of samples for both optical and electron microscopy.

Stereomicroscopic examinations of polished slabs allow for detailed examination of the full thickness of a construction element.

Thin sections studied with the petrographic microscope are another key tool in concrete petrography.

Petrographic thin sections facilitate studies of paste microstructure and secondary reaction mechanisms such as sulfate attack and alkali-silica reaction.

Good things come in small packages. This little wafer is the backscatter electron detector for the scanning electron microscope.

The electron microscope is a powerful tool for characterizing raw materials, such as this fly ash particle.

The most important tool in petrography is understanding how to relate microstructural observations to the performance of the material in the larger structure.

An Unwavering Focus on Petrography

We made a deliberate choice to focus on our energy on what we do best: petrographic analysis. We use state-of-the-art equipment and techniques to unlock the microstructure of construction materials.

Optical Microscopy

Optical microscopes serve as the cornerstone of our practice. See how we shed light on understanding the nature of construction materials.

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Electron Microscopy

Electron microscopy offers the ability to obtain higher magnification, superior resolution, and in situ microanalysis. See how we can unlock the details of your materials’ microstructure.

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Condition Surveys

Our background in geological field work, which hinges on the compass, offers a seamless translation to investigating concrete in the field.

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Fluorescence Microscopy

DRP uses fluorescent microscopy to highlight key aspects of concrete in both reflected and transmitted light. We use epoxy with fluorescent dye to stabilize fragile and damaged samples, which allows us to observe and document cracks and microcracks on polished slabs with great resolution. We produce fluorescent thin sections to the highest standards that allow us to measure the w/cm of hardened cementitious materials.

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Electrical Resistivity

DRP uses bulk electrical resistivity for a variety of purposes relevant to assessing the quality and durability of cementitious materials. Bulk resistivity measurements are the foundation of the Formation Factor, which provides a robust method to evaluate the potential durability of a concrete mixture. The Formation Factor is a central pillar in determining transport properties of concrete mixtures and developing service life models of the time to reach chloride corrosion thresholds for embedded steel reinforcement. Finally, we use bulk resistivity with residual expansion testing and quantitative microcracking measurements to the potential for damage to occur in concrete affected by alkali-aggregate reaction.

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Questions? We have answers. Contact us.

Give us a call at 303.938.0166 to get your project rolling.

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