DGMTS offer a wide range of laboratory testing services for concrete, soil, and asphalt.
Our laboratories, located in Chantilly, Virginia and Hampton, Virginia are accredited by the American Association of State Highway and Transportation Officials (AASHTO) and we are a member of Washington Area Council of Engineering Laboratories, Inc. (WACEL).
Our Accreditation conforms to the requirements of ASTM D3740, ASTM E329, and AASHTO R-18.
We participate in both the AASHTO re:source and CCRL sample proficiency test programs for soil and concrete.
DGMTS also offer in-situ testing including field monitoring and testing of soil fill materials using the sand cone and nuclear gauge methods. We have capabilities of performing in-situ permeability tests using constant head permeability as wells as falling head permeability methods. We also provide PDA testing.
SOIL
Moisture Contents (ASTM D2216, AASHTO T265)*
Liquid and Plastic Limits and Plasticity Index (ASTM D3418, AASHTO T89, T90)*
Mechanical Analysis (ASTM D 422 and D1140)*
- Sieve Analysis (with grain-size curve-Including washing through No. 200 Sieve) (ASTM D6913, AASHTO T27)
- Hydrometer Analysis ( with grain size curve)- using assumed Specific Gravity (ASTM D7928, AASHTO T88)
Specific Gravity (AASHTO T 100)
Compaction Test, Standard Proctor (ASTM 698 or AASHTO T99)*
- Method A through D, VTM-1
- As Item A, single Point
Compaction Test, Modified Proctor (ASTM D 1557 or AASHTO T180)*
- Method A through D
- As Item A, single Point
California Bearing Ratio, (single point) 4 day Soaking Penetration (including Proctor and Classification)*
- ASTM D1883, AASHTO T193 or VTM-8)
Consolidation Test (ASTM D2435)-(Maximum 12 load increments)-one reload*
- Additional Increments per load and additional load-reload
- Time Compression Curve ( Maximum 12 Curves)
- Additional time Compression Curve, Per curve
Unconfined Compression Test Per soil (ASTM D2166), Peak only
Direct Shear Test (ASTM D3080), per vertical stress*
- Residual Direct Shear Test(COE 1110 Appendix D), per Vertical Stress
Orgonic Content and Moisture Content of Organic Soil (ASTM D2974)
USDA Texture Analysis
Shelby Tube Extraction
