Geotechnical Test Types in GDMS
Browse calculated laboratory workflows for soil and aggregates, concrete and related materials, asphalt and rock.
Use the filter and search tools to find a test, understand its purpose and identify the typical result, calculation or graph managed by GDMS.
Four Principal Material Groups
The same engineering property may require a different workflow depending on the material, specimen and governing procedure. Tests are therefore listed in their applicable GDMS material context.
Soil and Aggregates
Classification, moisture, gradation, density, compaction, strength, deformation, permeability and durability.
Concrete, Grout and Mortar
Compressive, flexural and splitting-tensile strength with related specimen reporting.
Asphalt
Binder content, stability, viscosity, density and specific-gravity testing.
Rock
Moisture, index strength, unconfined compression and triaxial compression.
Browse GDMS Test Types
Filter by material group first, then search by test name, purpose or result. Some tests appear in more than one group because specimen handling and interpretation differ by material.
Showing 33 test types
| Test Type | Material Group | Purpose | Typical GDMS Output |
|---|---|---|---|
| Water Content | Soil and Aggregates | Determine moisture as a percentage of dry mass. | Moisture-content calculation and result sheet. |
| Soil Classification | Soil and Aggregates | Classify soil using relevant index and gradation data. | Classification summary with supporting inputs. |
| Grain Size Analysis | Soil and Aggregates | Determine particle-size distribution through the tested range. | Percent-passing table and gradation curve. |
| Atterberg Limits | Soil and Aggregates | Determine liquid limit, plastic limit and plasticity index. | Limit calculations, flow data and classification context. |
| Specific Gravity | Soil and Aggregates | Determine the relative density of soil solids or aggregate particles. | Specific-gravity calculation and test summary. |
| Mercury Shrinkage Limit | Soil and Aggregates | Evaluate shrinkage properties of fine-grained soil. | Shrinkage-limit calculations and specimen measurements. |
| Compaction | Soil and Aggregates | Establish the relationship between moisture content and dry density. | Compaction curve, optimum moisture and maximum dry density. |
| California Bearing Ratio (CBR) | Soil and Aggregates | Evaluate subgrade or base-material resistance under penetration loading. | Load-penetration curve and calculated CBR values. |
| R-Value | Soil and Aggregates | Evaluate the resistance of soil or aggregate for pavement design. | R-value calculations and result summary. |
| Nuclear Density | Soil and Aggregates | Assess in-place density, moisture and relative compaction. | Field readings, density values and compaction comparison. |
| Los Angeles Abrasion | Soil and Aggregates | Assess aggregate resistance to abrasion and degradation. | Mass-loss calculation and abrasion result. |
| Constant Head Permeability | Soil and Aggregates | Determine hydraulic conductivity under a maintained head. | Flow observations and calculated permeability coefficient. |
| Falling Head Permeability | Soil and Aggregates | Determine hydraulic conductivity from a changing head. | Head-time observations and calculated permeability coefficient. |
| Consolidation | Soil and Aggregates | Evaluate compressibility and time-dependent settlement response. | Load and deformation tables with consolidation curves. |
| Direct Shear | Soil and Aggregates | Measure shear resistance along a controlled failure plane. | Shear stress plots and interpreted strength parameters. |
| Unconfined Compressive Strength | Soil and Aggregates | Measure the compressive strength of a cohesive soil specimen without confinement. | Stress-strain data and peak compressive strength. |
| Triaxial Compression | Soil and Aggregates | Evaluate soil response under controlled confining pressure and loading. | Stress-strain curves and interpreted strength information. |
| Concrete Compressive Strength | Concrete, Grout and Mortar | Determine the compressive strength of concrete specimens. | Specimen-break records, strength calculations and summary. |
| Concrete Flexural Strength | Concrete, Grout and Mortar | Evaluate beam resistance under flexural loading. | Flexural-strength calculation and specimen report. |
| Concrete Splitting Tensile Strength | Concrete, Grout and Mortar | Measure indirect tensile strength of cylindrical specimens. | Splitting-tensile calculation and test summary. |
| Grout Compressive Strength | Concrete, Grout and Mortar | Determine the compressive strength of grout specimens. | Specimen results, calculated strength and reporting summary. |
| Mortar Compressive Strength | Concrete, Grout and Mortar | Determine the compressive strength of mortar specimens. | Specimen results, calculated strength and reporting summary. |
| Asphalt Bitumen Content | Asphalt | Determine binder content in an asphalt mixture. | Mass-balance calculation and bitumen percentage. |
| Marshall Stability | Asphalt | Evaluate stability and flow characteristics of compacted asphalt specimens. | Stability, flow and specimen summary. |
| Absolute Viscosity | Asphalt | Measure binder resistance to flow under the applicable test conditions. | Viscosity calculations and test summary. |
| Kinematic Viscosity | Asphalt | Determine kinematic viscosity from timed flow observations. | Timed readings and calculated viscosity. |
| Asphalt Nuclear Density | Asphalt | Assess in-place asphalt density and relative compaction. | Field density readings and compaction comparison. |
| Bulk Specific Gravity | Asphalt | Determine the bulk specific gravity of a compacted asphalt specimen. | Mass and volume inputs with calculated bulk specific gravity. |
| Maximum Specific Gravity | Asphalt | Determine the theoretical maximum specific gravity of an asphalt mixture. | Calculated maximum specific gravity and test summary. |
| Rock Water Content | Rock | Determine moisture content of a rock specimen. | Moisture calculation and result sheet. |
| Point Load Strength | Rock | Estimate rock strength from point-load index testing. | Corrected point-load index and specimen summary. |
| Rock Unconfined Compressive Strength | Rock | Determine intact rock strength under unconfined compression. | Stress-strain data and peak compressive strength. |
| Rock Triaxial Compressive Strength | Rock | Evaluate rock behavior under axial loading and confining pressure. | Stress-strain results and interpreted strength information. |
What GDMS Manages for Each Test
Individual forms and calculations differ, but the managed information follows a consistent path from sample registration to retained report.
Test Context
Project, sample, material, specimen, method and identifying information.
Measurements
Masses, dimensions, loads, readings, observations and other test inputs.
Calculations
Derived engineering values, classifications, tables and applicable curves.
Reviewed Report
Standardized output retained with the supporting project and laboratory record.
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