Section 2: Personnel Qualification
Sampling and testing personnel will be qualified to perform tests for the acceptance of materials in the areas of portland cement concrete, soils and aggregates and bituminous materials.
The test methods for which individuals can be qualified include, but are not limited to, the following. (*Denotes tests on which split or proficiency sample evaluations are required.)
Soils & Aggregates (100-E Series & 400-A Series)
- Tex-101-E, Preparing Soil and Flexible Base Materials for Testing
- Tex-102-E, Determining Slaking Time
- Tex-103-E, Determining Moisture Content in Soil Materials
- Tex-104-E, Determining Liquid Limit of Soils*
- Tex-105-E, Determining Plastic Limit of Soils*
- Tex-106-E, Calculating the Plasticity Index of Soils*
- Tex-107-E, Determining the Bar Linear Shrinkage of Soils*
- Tex-108-E, Determining the Specific Gravity of Soils
- Tex-110-E, Particle Size Analysis of Soils*
- Tex-111-E, Determining the Amount of Material in Soils Finer than 75 μm (No.200) Sieve
- Tex-113-E, Laboratory Compaction Characteristics and Moisture-Density Relationship of Base Materials
- Tex-114-E, Laboratory Compaction Characteristics and Moisture-Density Relationship of Subgrade and Embankment Soils
- Tex-115-E, Field Method for Determining In-Place Density of Soils and Base Materials
- Tex-116-E, Ball Mill Method for Determining the Disintegration of Flexible Base Material
- Tex-117-E, Triaxial Compression Tests for Disturbed Soils and Base Materials
- Tex-120-E, Soil-Cement Testing
- Tex-121-E, Soil-Lime Testing
- Tex-126-E, Molding, Testing, and Evaluating Bituminous Black Base Materials*
- Tex-127-E, Lime Fly-Ash Compressive Strength Test Methods
- Tex-128-E, Determining Soil pH
- Tex-129-E, Measuring the Resistivity of Soil Materials
- Tex-140-E, Measuring Thickness of Pavement Layer
- Tex-400-A, Sampling Stone, Gravel, Sand, and Mineral Aggregates
- Tex-401-A, Sieve Analysis of Fine and Coarse Aggregate*
- Tex-402-A, Fineness Modulus of Fine Aggregate
- Tex-403-A, Saturated Surface Dry Specific Gravity and Absorption of Aggregates
- Tex-404-A, Determining Unit Mass (Weight) of Aggregates
- Tex-405-A, Determining Percent Solids and Voids in Concrete Aggregates
- Tex-406-A, Material Finer Than 75 μm (No. 200) Sieve in Mineral Aggregates (Decantation Test for Concrete Aggregates)
- Tex-408-A, Organic Impurities in Fine Aggregate for Concrete
- Tex-409-A, Free Moisture and Water Absorption in Aggregate for Concrete
- Tex-411-A, Soundness of Aggregate by Using Sodium Sulfate or Magnesium Sulfate
- Tex-413-A, Determining Deleterious Materials in Mineral Aggregates
- Tex-425-A, Determining Moisture Content in Fine Aggregate by the "Speedy" Moisture Method
- Tex-460-A, Determining Crushed Face Particle Count
Bituminous (200-F Series)
- Tex-200-F, Sieve Analysis of Fine and Coarse Aggregate*
- Tex-201-F, Bulk Specific Gravity and Water Absorption of Aggregate
- Tex-202-F, Apparent Specific Gravity of Material Finer than 180 μm (No. 80) Sieve
- Tex-203-F, Sand Equivalent Test*
- Tex-204-F, Design of Bituminous Mixtures
- Tex-205-F, Laboratory Method of Mixing Bituminous Mixtures
- Tex-206-F, Compacting Test Specimens of Bituminous Mixtures*
- Tex-207-F, Determining Density of Compacted Bituminous Mixtures*
- Tex-208-F, Test for Stabilometer Value of Bituminous Mixtures*
- Tex-210-F, Determining Asphalt Content of Bituminous Mixtures by Extraction*
- Tex-211-F, Recovery of Asphalt from Bituminous Mixtures by the Abson Process
- Tex-212-F, Determining Moisture Content of Bituminous Mixtures
- Tex-213-F, Determining Hydrocarbon-Volatile Content of Bituminous Mixtures
- Tex-217-F, Determining Deleterious Material and Decantation Test for Coarse Aggregates
- Tex-221-F, Sampling Aggregate for Bituminous Mixtures, Surface Treatments and Limestone Rock Asphalt
- Tex-222-F, Sampling Bituminous Mixtures
- Tex-224-F, Determining Flakiness Index
- Tex-226-F, Indirect Tensile Strength Test
- Tex-227-F, Theoretical Maximum Specific Gravity of Bituminous Mixtures*
- Tex-228-F, Determining Asphalt Content of Bituminous Mixtures by the Nuclear Method*
- Tex-229-F, Combined HMAC Cold-Belt Sampling and Testing Procedure
- Tex-236-F, Determining Asphalt Content from Asphalt Paving Mixtures by the Ignition Method*
Concrete (400-A Series)
- Tex-407-A, Sampling Freshly-Mixed Concrete
- Tex-414-A, Air Content of Freshly Mixed Concrete by the Volumetric Method*
- Tex-415-A, Slump of Portland Cement Concrete*
- Tex-416-A, Air Content of Freshly Mixed Concrete by the Pressure Method*
- Tex-417-A, Unit Weight, Yield, and Air Content (Gravimetric) of Concrete
- Tex-418-A, Compressive Strength of Cylindrical Concrete Specimens*
- Tex-419-A, Compressive Strength of Concrete Using Portions of Beams Broken in Flexure
- Tex-424-A, Obtaining and Testing Drilled Cores of Concrete
- Tex-436-A, Measuring Texture Depth by the Sand Patch Method
- Tex-437-A, Test for Flow of Grout Mixtures (Flow Cone Method)
- Tex-447-A, Making and Curing Concrete Test Specimens
- Tex-448-A, Flexural Strength of Concrete Using Simple Beam Third-Point Loading*
- Tex-450-A, Capping Cylindrical Concrete Specimens
- Tex-460-A, Determining Crushed Face Particle Count
Asphalt (500-C Series)
- Tex-502-C, Penetration of Bituminous Materials (refer to AASHTO T 49)
- Tex-530-C, Effect of Water on Bituminous Paving Mixtures
- Tex-531-C, Prediction of Moisture-Induced Damage to Bituminous Paving Materials Using Molded Specimens
Special Procedures (1000-S Series)
- Tex-1000-S, Operating Pavement Profilograph and Evaluating Profiles
There may be other tests, not listed above, that are routinely performed in specific geographical locations of the state for which applicable TxDOT districts may require qualification.