Geotechnical Laboratory Services

Geotechnical Laboratory Services

RRC works with an AASHTO accredited geotechnical laboratory in Round Rock, TX. This big-volume capacity, fully equipped laboratory is automated for testing soil, rock, and aggregate materials. Our partner laboratory in Round Rock, TX maintains active accreditations through the AASHTO Accreditation Program. In-house quality assurance programs, prepared in accordance with AASHT R-18, ASTM C1077 (Aggregates), and ASTM D3740, maintain a high level of accuracy and reproducibility of testing services. Experienced and certified technicians perform laboratory tests, with all testing and evaluations performed in accordance with ASTM, AASHTO, and TxDOT procedures and standards. Our clients can be confident their testing needs are met by certified professionals. Our strong customer service culture drives us to provide accurate and timely testing results that address our clients’ specific needs.


Quality Systems Services: AASHTO R-18, D3740 (Soil and Rock)

Soil Testing Services: R58, T88, T89, T90, T99, T100, T180, T193, T208, T215, T216, T224, T236, T265, T267, T288, T296, T297, T310, D421, D422, D698, D854 (Specific Gravity), D1140, D1557, D1883 (CBR), D2166, D2216, D2434 (Permeability of Granular Soils), D2435, D2487, D2488, D2850 (UU Triaxial Compression), D2937, D2974 (Organic Content), D3080 (Direct Shear of Soils), D4318, D4546 (1-D Swell or Collapse of Soils), D4643, D4718, D4767 (CU Triaxial Compression), D4829, D4972, D5084 (Hydraulic Conductivity: Flexible Wall Permeameter), D6913, D6938 (Nuclear Density and Moisture Gauge for Soil), D7012 (Compressive Strength of Rock Core Specimens, Method C), G57 (Soil Resistivity Using the Wenner Four-Electrode Method), G187

Aggregate Testing Services: T11, T19, T27, T84, T85, T248, T255, C29, C117, C127, C128, C136, C566, C702

Enrolled in the AMRL Proficiency Programs: Coarse Aggregate, Fine Aggregate, Soil Classification and Compaction, and Soil CBR