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Gillette, Wyoming
Construction Materials Testing in Gillette, WY
Concrete, soil, and aggregate testing in Gillette, Wyoming — 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
- Denver, CO regional hub · project-based mobilization
- Lead time
- Set in the proposal, with mobilization planned around your pour and earthwork schedule
- 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
- Gillette and the surrounding WY area — Cheyenne, Casper, Laramie
- Coverage
- Wyoming statewide · 27 regional hubs
- Technicians
- ACI Grade I · NICET CMT · ICC special inspectors
- Call us
- (346) 420-5425
Scope
What we test in Gillette
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 Gillette
Gillette sits at the center of one of the most active construction corridors in Wyoming, where energy-sector infrastructure, industrial facilities, and commercial development place real demands on the ground beneath and the concrete above. The high-desert climate delivers wide temperature swings that can compress concrete placement windows and complicate soil moisture control, while the region's coal-bearing geology means variable subgrade conditions that require verified compaction and classification data before a foundation or pavement section goes down. Our firm dispatches certified field technicians through our Denver regional hub to provide ASTM-compliant construction materials testing across Campbell County and the surrounding area — covering fresh concrete testing and cylinder breaks, aggregate gradation and quality, Proctor compaction and nuclear density, soil classification, and soil corrosivity testing. Testing is performed under a documented quality system, and reports are structured to support project documentation, agency submittals, and engineering decisions without ambiguity.
Subgrade conditions in the Powder River Basin can include expansive or highly variable soils that warrant careful classification and compaction verification before structural fills or pavement subgrades are accepted. Wyoming's short warm season and late-spring freeze risk make concrete placement timing sensitive, and cold-weather protection plans should be supported by documented fresh concrete temperature records per ACI 306 guidance.
FAQ · Gillette
How do wide temperature swings in Gillette affect concrete cylinder curing, and how do you handle that in the field?
Gillette's diurnal temperature range and cold-season conditions require that field-cured cylinders be protected from freezing and excessive heat immediately after casting, per ASTM C31 initial curing requirements (60–80°F for the first 24 hours where possible). Our technicians document ambient and concrete temperatures at time of sampling and advise on protection measures. Cylinders are transported to the laboratory for standard curing under controlled conditions to ensure break results reflect actual mix strength.
What Proctor method applies to the engineered fills common on industrial and energy-related projects in the Gillette area?
The choice between ASTM D698 (Standard Proctor) and ASTM D1557 (Modified Proctor) depends on the compaction energy specified for the project — Modified Proctor is typical for heavily loaded industrial pads, haul roads, and structural fills common in energy-sector work. We perform both methods; confirm which your geotechnical report or specification of record requires so we run the correct reference curve against field nuclear density readings taken per ASTM D6938.
Can you perform soil classification testing to support a geotechnical or foundation report in Campbell County?
Yes. We provide grain-size analysis per ASTM D6913 and D7928 (sieve and hydrometer), Atterberg limits per ASTM D4318, and USCS classification per ASTM D2487. These tests are commonly needed when subgrade variability is encountered during grading or when a geotechnical engineer of record requires laboratory confirmation of soil type before finalizing foundation or pavement design recommendations.
How fast can a technician be on site in Gillette?
Gillette work is dispatched through our Denver, CO 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 Gillette, WY?
Field work in Gillette is dispatched through the Denver, CO regional hub, about 316 miles away. Laboratory testing is performed in Sugar Land, TX under chain of custody, or in a mobile laboratory mobilized to large Gillette projects.
Are the technicians you send to Gillette 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 Wyoming agencies or owners require state-specific certifications, those are confirmed in the proposal.
Hiring for project coverage. Field technician openings in Gillette · all positions.
Scheduling & proposals
Need construction materials testing in Gillette?
Call to schedule a technician, or send project documents for a written proposal.