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Theodora Onwunyiri
Construction Materials Testing (CMT) Lab Manager 

Q: Theodora, you play a critical role in the day-to-day activities at one of �鶹TV��վ’ laboratories. How did you become interested in materials testing or what inspired you to pursue a career in this field?

What sparked my interest in materials testing was the realization that every test I conduct has a profound impact on the safety and durability of the structures all around us. I’m inspired to know that my meticulous attention to detail plays an important role in making sure buildings, bridges and vital infrastructure are built to last and that they protect the communities they serve. There’s a deep sense of pride and responsibility that comes from knowing the work I do contributes directly to the foundation of our everyday lives.

Q: �鶹TV��վ’ New Jersey lab handles significant cylinder break volume, as well as aggregate/concrete and soils testing. What does a typical day in the lab look like for you?

For me, a typical day involves making sure all laboratory activities are performed according to strict standards and safety protocols. I focus heavily on accuracy and timeliness —making certain that test reports are correct, equipment is well maintained and the lab environment is functioning at peak performance. This work is essential because the quality and reliability of these tests directly impact the safety and longevity of the structures built with the materials we examine. By upholding rigorous testing practices and upholding compliance standards, I help prevent costly construction errors, support the integrity of critical infrastructure and ultimately protect the communities who depend on these projects every day.  

Q: What kind of material testing do you perform, and what aspect of your job do you enjoy best? How does your role directly support major infrastructure projects?

I work frequently with concrete, masonry materials (mortar and grout) and soil samples collected from construction sites. I enjoy testing these materials because each sample tells a story about the project’s requirements. Comparing the test results to specifications helps confirm whether a structure is built to last.

Good quality assurance and quality control (QA/QC) practices help make sure the materials used in construction meet design expectations. My work supports the safety, reliability and long‑term performance of finished structures. It’s a critical component of delivering value for our clients, while also protecting the communities who benefit from the built infrastructure.

For example, my lab worked on a renewable energy project that supports an offshore wind energy generation hub. Serving as the Special Inspection agency, �鶹TV��վ provided QA/QC services to evaluate the construction processes and activities and make sure they are performed in accordance with the approved construction documents and/or design. I take significant pride knowing my work supports quality assurance and is making an impact on the world.

Q: Is there anything about your job that might surprise people?

Many people may not realize how essential materials testing is to overall construction quality. It’s not just a behind-the-scenes function; it’s a cornerstone of safe and successful construction. In fact, every test conducted plays a direct role in determining whether the structures we depend on — such as buildings, bridges and roads — are built to withstand the demands of everyday use and environmental challenges. Materials testing ensures that components like concrete, masonry and soils meet stringent quality and safety standards before they become part of a finished project. By identifying potential weaknesses, verifying compliance with design specifications and catching issues early, this process helps prevent costly errors, structural failures and safety hazards. Ultimately, materials testing supports the reliability, durability and longevity of infrastructure, providing confidence not only to clients but also to the communities that rely on these structures for their safety and well-being.

Q: What does WIC Week mean to you? How has being a woman in this field shaped your experience?

WIC Week was established to help break the misconception that construction is strictly a man’s field. By highlighting the achievements of women in the industry, WIC Week inspires young women to pursue their dreams and explore construction‑related careers.

Working in a construction materials testing lab has reinforced what my parents always taught me — that gender should not limit our goals or our ability to achieve anything we set our minds to. My work experience has strengthened my confidence and resilience.

Q: What advice would you offer young women interested in construction or materials testing?

See construction as a viable career option without limitations. It’s your interest, dedication and expertise that matter.

I would also remind young women that you can have a career and fulfill traditional female roles, including being a mother. I am a mother to a lovely son, and he is an important part of my life that brings me great joy.

Q: What do you hope to see for the future of women in construction, especially in technical or lab roles?

I hope to see more women managing CMT laboratories. Increasing female leadership in technical areas will continue to open doors for the next generation.