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Geotechnical Laboratory Testing
Service Overview
Top-notch geotechnical engineering requires equally capable in-house testing facilities. In support of our geotechnical design and construction monitoring services, GeoStructures maintains an AASHTO-accredited geotechnical laboratory.
Keeping true to our commitment to excellence, we have invested in state-of-the-art, computer- controlled, servo hydraulic triaxial and Constant Rate of Strain (CRS) consolidation testing equipment. With the advent of CRS consolidation, we offer more accurate results than incremental consolidation, as well as reduced turnaround times of only 2 to 3 days— a dramatic reduction from the 2 weeks required for standard testing!
Specialized stress path triaxial testing makes it possible to consolidate soil specimens before shearing at conditions that model in-situ stresses, thereby improving the usefulness of such endeavors. Fully-trained staff engineers perform all of our testing.
Index Testing
Comprehensive index testing including gradation & hydrometer analysis, Atterberg limits, organic content, bulk density & dry density, and porosity.
Compaction Testing
Conduct standard and modified Proctor testing to determine soil compaction characteristics.
Consolidation Testing
Perform incremental 1-D consolidation, Constant Rate of Strain (CRS), 1-D swell, and Ko consolidation tests for soil samples.
Permeability Testing
Measure soil permeability using constant/falling head and triaxial permeability tests.
Rock Testing
Conduct unconfined strength and point load tests on rock samples to determine their strength properties.
Corrosion-Related Testing
Test soil resistivity, pH, and sulfate & chloride concentrations for corrosion potential.
Strength Testing
Perform triaxial compressions (UU, CU, CD, CKoU, & CKoD), direct shear, unconfined compression, California Bearing Ratio (CBR), and triaxial stress path & cyclic loading tests.
Materials Finer than (No. 200) Sieve by Washing
Determining the amount of fine particles in aggregates using the washing method.
Sieve Analysis of Fine and Coarse Aggregates
Conducting sieve analysis to classify fine and coarse aggregates based on particle size distribution.
Specific Gravity & Absorption of Fine Aggregates
Measuring the specific gravity and absorption rates of fine aggregates.
Specific Gravity & Absorption of Coarse Aggregate
Determining the specific gravity and absorption rates of coarse aggregates.
Moisture Content of Aggregate by Oven Drying
Measuring the moisture content of aggregates using the oven drying method.
Organic Impurities in Fine Aggregates
Testing for organic impurities in fine aggregates to ensure material quality.
Resistance to Abrasion by Abrasion and Impact in the L. A. Machine
Evaluating aggregate resistance to abrasion and impact using the L. A. Machine.
Soundness of Aggregate by Sodium or Magnesium Sulfate
Testing aggregate soundness using sodium or magnesium sulfate solutions to assess durability.
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