laboratory testing

We maintain comprehensive in-house quality assurance/quality control (QA/QC) testing laboratories in each office, fully equipped and staffed to handle multiple mid-to-large size projects.

 We maintain comprehensive in-house quality assurance/quality control (QA/QC) testing laboratories in each office, fully equipped and staffed to handle multiple mid-to-large size projects.

laboratory accreditation

Our laboratories are accredited by the American Association of State Highway and Transportation Officials/Materials Reference Laboratory (AASHTO/AMRL), and all tests are performed in accordance with American Society for Testing and Materials (ASTM), Cement and Concrete Reference Laboratory (CCRL) and U.S. Army Corps of Engineers (USACE) requirements, as applicable.

 

laboratory testing services

 

  • Aggregates
    Sieve analysis-dry, Washed gradation
     
  • Asphalt
    Maximum theoretical specific gravity, bulk specific gravity, field sample stability, flow by percent air voids, Marshall Method, thickness and unit weight of cores
     
  • Concrete
    Compressive strength of concrete cylinders, Flexural strength of concrete beams, Air dry unit weight test
     
  • Mortar and Grout
    Compressive strength, cubes or cylinders
     
  • Soils
    Visual classification, Moisture and organic content, hand-held penetrometer, liquid and plastic limits, Shelby tube, Split spoon, sieve analysis-wash, rock core and unconfined compressions, Hydrometer, Proctors methods