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Quality Control & Testing

From the source to our state-of-the-art testing laboratory to the job site, we’re committed to providing the highest quality asphalt products.

Like you, we at Gerken take our commitment to quality control seriously.

Our advanced testing laboratory is among the best in the region, staffed with experienced technicians employing the industry’s top equipment. In the field, we test behind the “paving train” to ensure our work meets all federal, state, and other applicable specifications.

Our quality control program features:

  • One central lab, with field labs at each asphalt plant location
  • Nuclear density gauges that measure the effectiveness of rollers
  • Core drills to extract samples that we test for air voids, liquid asphalt content, and other characteristics
  • AMRL, ODOT, and MDOT certifications

Complete customer satisfaction is the benchmark by which we measure quality.


Asphalt Paving

Gerken’s award-winning asphalt paving professionals will streamline your project, handling everything from road widening to drainage.

Asphalt Materials

Gerken is a leading producer of superior asphalt materials. Our customers count on quality, and we deliver.

Milling and Grinding

Our experienced crews can ensure your project’s success, whether you need cross sloping, planing, widening, or full-depth removal.

Decorative Asphalt

Function, durability, and beauty are all possible with decorative asphalt. Highly affordable, decorative asphalt is perfect for roadways, crosswalks, and other paved areas.

Learn more about our quality control standards.

Ensure only top-performing materials go into your next project.