Business Details
50+ Years
experience
Expert Engineering Testing Services
Founded in 1943, Construction Materials Laboratory is the oldest established construction materials testing laboratory in East Tennessee. We have served clients across Tennessee, Arkansas, Alabama, Kentucky, Virginia, West Virginia, North Carolina, and Georgia for over 70 years. Our team of 20 full-time engineering technicians provides geotechnical exploration, construction materials testing, and QA/QC services for residential, commercial, and industrial projects. We maintain memberships in ASTM and ACI and hold AASHTO accreditation for our rigorous testing standards. Our Knoxville headquarters and Johnson City branch deliver quality services to architects, engineers, government agencies, and contractors.With expertise in soil analysis, concrete testing, and structural evaluation, we ensure compliance with project specifications and industry regulations. Our association with Foundation Systems Engineering since 1979 enhances our geotechnical consulting capabilities. We prioritize timely, cost-effective solutions while maintaining a legacy of technical excellence. Our 70-year track record reflects our commitment to client satisfaction and industry leadership. We continue to serve both new and longstanding clients with innovative testing methodologies and proven regional expertise.
Services
Geotechnical Exploration
Construction Materials Testing
QA/QC Testing
Soil Analysis
Concrete Testing
Details
- Year established: 1943
Highlights and features
- We offer 70+ years of specialized expertise in construction materials testing.
- Our team holds AASHTO accreditation for rigorous quality standards.
- We provide comprehensive geotechnical and materials testing services under one roof.
- Our regional expertise covers six southeastern U.S. states.
- Our association with Foundation Systems Engineering enhances technical capabilities.
Associations and certifications
- AASHTO Accreditation Program
Services
Geotechnical Exploration
Our geotechnical exploration services assess soil and rock properties for foundation design. We use drilling rigs, sampling tools, and in-situ testing to evaluate subsurface conditions. This data informs earthwork planning and structural stability for construction projects.
Construction Materials Testing
We test concrete, asphalt, aggregates, and masonry units for compliance. Our lab performs strength, density, and durability assessments. Field testing ensures construction materials meet project specifications and safety standards.
QA/QC Testing
Our QA/QC programs verify material compliance during construction. We monitor concrete mixing, asphalt compaction, and soil density in real-time. This ensures adherence to engineering specifications and prevents costly rework.
Rock Core Drilling
We perform NX-sized rock core drilling to analyze subsurface geology. This method provides precise data for foundation design and structural engineering. Our equipment ensures accurate sample retrieval for laboratory analysis.
Concrete Testing
We conduct compressive strength tests on concrete cylinders and masonry units. Our lab follows ASTM standards for quality verification. Field testing includes slump tests and air content measurements for fresh concrete.
People
Jack F Llewellyn, Jr
President and General Manager
Leading the company since its founding in 1943, Jack oversees operations and strategic direction. With decades of experience in materials testing, he ensures adherence to industry standards.
Johnny R. Quillen
Laboratory Manager
Managing the Knoxville lab since 1973, Johnny directs technical operations and quality control. His expertise ensures accurate testing results for concrete and asphalt materials.
G. Allen Browning
Office Manager
As Johnson City office manager, G. Allen oversees regional testing services. His engineering background ensures technical excellence in geotechnical and materials testing operations.
Questions
What services does Construction Materials Laboratory offer?
We provide geotechnical exploration, construction materials testing, and QA/QC services for infrastructure projects.
Which states do you serve?
We operate across Tennessee, Arkansas, Alabama, Kentucky, Virginia, West Virginia, North Carolina, and Georgia.
Are your testing methods accredited?
Yes, we maintain AASHTO accreditation for our materials testing procedures.
How long has your company been in business?
We've provided engineering services since 1943, with 70+ years of industry experience.
Can you test existing construction materials?
Yes, we analyze in-place materials for strength, durability, and compliance with specifications.
