Home / Services / Materials Testing / Durham, NC
Durham, North Carolina
Construction Materials Testing in Durham, NC
Concrete, soil, and aggregate testing in Durham, North Carolina — fresh concrete tests and cylinder breaks, Proctor and nuclear density, gradation, Atterberg limits, and soil corrosivity — by ACI- and NICET-certified technicians, with results reviewed and issued under a documented quality system.
- Dispatched from
- Raleigh, NC regional hub (21 mi) · project-based staffing
- Lead time
- Scheduled by phone or proposal; lead time confirmed when the scope is set
- Laboratory
- Sugar Land, TX laboratory under chain of custody, or a mobile laboratory for large projects
- Reporting
- Reviewed and issued under a documented quality system; formatted for owner, engineer, and building-official review
- Serving
- Durham and the surrounding NC area — Charlotte, Raleigh, Greensboro
- Coverage
- North Carolina statewide · 27 regional hubs
- Technicians
- ACI Grade I · NICET CMT · ICC special inspectors
- Call us
- (346) 420-5425
Scope
What we test in Durham
Concrete testing services
Fresh concrete sampled and tested at the pour — slump, air content, unit weight, and temperature — with cylinders and beams cast on site and broken in the laboratory on the schedule your specification calls for.
ASTM C172ASTM C143ASTM C231ASTM C173ASTM C138ASTM C1064ASTM C31ASTM C39
Aggregate testing services
Gradation, fines content, specific gravity and absorption, unit weight, abrasion resistance, and stockpile moisture for concrete, base course, and backfill aggregates.
ASTM D75ASTM C136ASTM C117ASTM C127ASTM C128ASTM C29ASTM C131ASTM C566
Soil compaction and density testing
Standard and modified Proctor curves in the laboratory and in-place density by nuclear gauge on every lift, so fill, subgrade, and trench backfill are documented against the specified percent compaction.
Soil classification and index testing
Sieve and hydrometer gradation, Atterberg limits, moisture content, specific gravity, and USCS classification for earthwork acceptance, select-fill verification, and geotechnical reports.
ASTM D6913ASTM D7928ASTM D1140ASTM D4318ASTM D2216ASTM D854ASTM D2487
Soil corrosivity testing
pH and electrical resistivity of backfill for MSE walls, pipelines, and buried structures, reported against the specification limits for metallic and geosynthetic reinforcement.
Special inspection (IBC Chapter 17)
ICC-certified special inspectors for reinforced concrete and soils, reporting to the building official alongside the materials test results, so one agency covers both requirements.
Full scope, standards list, and pricing basis: Construction Materials Testing.
Local conditions
Construction materials testing conditions in Durham
Durham is in the middle of one of the fastest-growing construction markets in the Southeast. Mixed-use developments, life-science facilities, multifamily housing, and expanded infrastructure are all moving ground simultaneously across the city and the surrounding Research Triangle region. The Piedmont soils underlying much of that work — residual clays and weathered saprolite derived from metamorphic and granitic parent material — demand careful attention to moisture sensitivity, bearing capacity, and compaction performance. North Carolina's humid subtropical climate adds a seasonal dimension: summer heat and humidity compress your workable window for fresh concrete placement, while winter temperature swings raise curing concerns that specification compliance cannot ignore. Our firm dispatches ACI- and NICET-certified field technicians through our Raleigh regional hub to deliver ASTM-compliant testing of concrete, aggregate, and soil on Durham projects — with reporting structured to satisfy your engineer of record, your special inspection program, and the project schedule.
Piedmont residual soils in the Durham area commonly include expansive clays and highly variable saprolite profiles that can shift significantly with seasonal moisture changes, making Proctor compaction standards and in-place density verification especially consequential for earthwork acceptance. North Carolina's warm, humid summers can accelerate concrete slump loss and set time, reinforcing the importance of timely fresh concrete testing documented to ASTM C172 and C31 requirements.
FAQ · Durham
Durham sits on Piedmont saprolite and residual clay — how does your soil testing address that variability?
Piedmont saprolite and residual clays often exhibit rapid moisture-density behavior changes across short distances. We run laboratory Proctor compaction curves per ASTM D698 or D1557 (Standard or Modified, per spec), classify soils to ASTM D2487, and perform in-place nuclear density gauge testing per ASTM D6938 to give you defensible compaction acceptance tied to the actual material in each lift — not a generic assumption.
How far in advance do I need to schedule a technician for Durham field work dispatched from Raleigh?
Coverage for Durham is dispatched through our Raleigh regional hub, approximately 21 miles away. We ask that you request field visits with as much lead time as your schedule allows. Advance scheduling keeps technicians coordinated with your pour or earthwork windows and avoids conflicts with other active projects in the Triangle area. Contact the Raleigh hub directly to confirm availability for your specific project phase.
What concrete tests are performed at the point of discharge on a Durham job site, and which ASTM standards govern them?
At the truck, our ACI-certified field technicians sample fresh concrete per ASTM C172, then measure slump (ASTM C143), air content (ASTM C231 for pressure method), unit weight (ASTM C138), and concrete temperature. Standard cylinders are cast per ASTM C31 and cured, transported, and broken in compression per ASTM C39. All results are documented in a written field report tied to the specific load and placement location.
How fast can a technician be on site in Durham?
Durham work is dispatched through our Raleigh, NC regional hub. Scheduled visits are set up by phone at (346) 420-5425; multi-day placements and full-time project assignments are scheduled through a proposal request.
Which office covers materials testing in Durham, NC?
Field work in Durham is dispatched through the Raleigh, NC regional hub, about 21 miles away. Laboratory testing is performed in Sugar Land, TX under chain of custody, or in a mobile laboratory mobilized to large Durham projects.
Are the technicians you send to Durham certified?
Yes. Concrete technicians hold ACI Concrete Field Testing Technician Grade I; soils and laboratory technicians hold NICET Construction Materials Testing certifications; special inspection is performed by ICC-certified special inspectors. Where North Carolina agencies or owners require state-specific certifications, those are confirmed in the proposal.
Hiring: we staff this work locally. Field technician openings in Durham · all positions.
Scheduling & proposals
Need construction materials testing in Durham?
Call to schedule a technician, or send project documents for a written proposal.