📞 (740) 254-1018 | ✉ npowell@aggcontesting.com | 📍 762 River Rd SW, Gnadenhutten, OH 44629
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Agg-Con Testing

Aggregate • Concrete • Soil Testing Laboratory

Precision Testing for
Aggregate, Concrete & Soil

AASHTO-accredited construction materials testing serving the Ohio Valley region. Results you can build on.

AASHTO Accredited Laboratory

Our quality management system is certified under AASHTO R18 — Establishing and Implementing a Quality System for Construction Materials Testing Laboratories. Every result is backed by rigorous QA/QC protocols.

AASHTO Accredited

Laboratory Services

Click any service card to expand the full list of test standards we perform.

Aggregate Testing
AASHTO Accredited

Comprehensive testing of fine and coarse aggregates for construction projects including sieve analysis, specific gravity, soundness, and abrasion resistance.

  • R76 / C702 Reducing Samples of Aggregate to Testing Size
  • T11 / C117 Materials Finer Than 75-μm (No. 200) Sieve by Washing
  • T19 / C29 Bulk Density (Unit Weight) and Voids in Aggregate
  • T21 / C40 Organic Impurities in Fine Aggregates for Concrete
  • T27 / C136 Sieve Analysis of Fine and Coarse Aggregates
  • T84 / C128 Specific Gravity & Absorption of Fine Aggregate
  • T85 / C127 Specific Gravity & Absorption of Coarse Aggregate
  • T95 / C131 Resistance to Abrasion of Small-Size Coarse Aggregate (LA Machine)
  • C535 Resistance to Degradation of Large-Size Coarse Aggregate (LA Machine)
  • T104 / C88 Soundness by Sodium Sulfate or Magnesium Sulfate
  • T255 / C566 Total Moisture Content of Aggregate by Drying
  • T327 / D6928 Resistance to Abrasion by Micro-Deval (Coarse Aggregate)
Concrete Testing
AASHTO Accredited

Field and laboratory concrete testing including compressive strength cylinders, slump, air content, density, and chloride ion penetration resistance.

  • M201 / C511 Moist Cabinets, Moist Rooms & Water Storage Tanks
  • R39 / C192 Making and Curing Concrete Specimens in the Laboratory
  • R60 / C172 Sampling Freshly Mixed Concrete
  • R100 / C31 Making and Curing Concrete Cylinders in the Field
  • T22 / C39 Compressive Strength of Cylindrical Concrete Specimens
  • T119 / C143 Slump of Hydraulic Cement Concrete
  • T121 / C138 Density (Unit Weight), Yield & Air Content of Concrete
  • T152 / C231 Air Content by the Pressure Method
  • T196 / C173 Air Content by the Volumetric Method
  • T231 / C617 Capping Cylindrical Concrete Specimens (≤6000 psi)
  • T277 Electrical Indication of Concrete's Ability to Resist Chloride Ion Penetration
  • T309 / C1064 Temperature of Freshly Mixed Portland Cement Concrete
Soil Testing
ASTM Standards

Soil compaction, moisture content, and bearing capacity testing using standard proctor, nuclear density gauge, and dynamic cone penetrometer methods.

  • ASTM D698 Laboratory Compaction of Soil (Standard Proctor)
  • ASTM D6938 Compaction & Moisture Content Using Nuclear Density Gauge
  • ASTM D6951 Soil Bearing Determination Using Dynamic Cone Penetrometer

Note: Soil testing methods are not included in our AASHTO accreditation.

Laboratory Profile
AASHTO R18

Our quality management system is established and implemented per AASHTO R18, ensuring consistent, reliable, and traceable test results for every sample we process.

  • AASHTO R18 Establishing and Implementing a Quality System for Construction Materials Testing Laboratories
  • Documented QA/QC All procedures follow documented methods with full traceability
  • Equipment Calibration Regular calibration and maintenance records maintained for all test equipment
  • Personnel Qualifications Technicians trained and qualified to applicable standards

Built for the Field

We understand project timelines. Fast turnaround, accurate results, and local expertise you can count on.

Fast Turnaround

Timely results to keep your project on schedule.

AASHTO Accredited

Accredited quality system recognized by state DOTs and project owners.

Local Expertise

Serving the Ohio Valley with knowledge of regional materials and project requirements.

Detailed Reporting

Clear, complete test reports that meet specification and submittal requirements.

Get in Touch

Ready to schedule testing or have a question about our services? Reach out — we respond quickly.