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Soils and Materials Lab Services

The soils and materials laboratory of Pioneer Technical Services, Inc., located in Helena, Montana, is accredited with the American Association of State Highway Transportation Officials (AASHTO). The laboratory conducts tests on soils and aggregates for design and for compliance purposes by either AASHTO or American Standards for Testing of Materials (ASTM) criteria. Pioneer Technical Services, Inc. has American Concrete Institute (ACI) certified personnel to collect and test fresh concrete. Pioneer Technical Services, Inc. also has certified nuclear gauge testing personnel and equipment qualified to evaluate moisture/density relationships for field compliance.

The geotechnical personnel and technicians of Pioneer Technical Services, Inc. deliver soil and aggregate samples to the Pioneer Technical Services, Inc. Laboratory and follow a chain-of-custody format. The tests are specified and an anticipated date of test completion is made. The samples are generally photographed during their testing stage and included in the materials report.

The Pioneer Technical Services, Inc. Laboratory routinely conducts the following tests:

 

 
AASHTO/ASTM Designation
Test

T11/C117

Materials Finer than No. 200 in Mineral Aggregates by Wash

T19/C29

Unit Weight of Aggregate

T27/C136

Sieve Analysis of Fine and Coarse Aggregates

T84/C128

Specific Gravity for Fine Aggregate

T85/C127

Specific Gravity for Coarse Aggregate

T88/D422

Particle Size Distribution of Soils

T89/D4318

Liquid Limit

T90/D4318

Plastic Limit, Plasticity Index

T96/C131

Los Angeles Abrasion

T99/D698

Standard Proctor

T100/D854

Specific Gravity for Soils

T112/C142

Friable Pieces of Aggregate

T113/C123

Light Weight Particles

T121/C138

Air Content by Gravimetric Method

T152/C231

Air Content of Freshly Mixed Concrete by Pressure Method

T180/D1557

Modified Proctor

T119/C143

Concrete Slump

T191/D1556

In-Place Density w/ Sand Cone

T193/D1883

California Bearing Ratio

T208/D2166

Unconfined Compression Strength

T216/D2435

One Dimensional Consolidation

T265/D2216

Moisture Content

T304/C1252

Uncompacted Void content of Fine Aggregate

-/C172

Sampling Freshly Mixed Concrete

-/D2922

In-Place Density w/Nuclear Methods

-/D4542

Soluble Sulfates

-/D4791

Flat and Elongated Particles

-/G51

PH

-/G57

Soil Resistivity

The Pioneer Technical Services, Inc. Laboratory also classifies soils based on United States Department of Agriculture (USDA) for texture and for rock content.  
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