WisDOT Services

Our technicians and engineers have received Highway Technician Certification Program (HTCP) certifications for testing construction materials.  We have staff certified as AggTech I, AggTech II, PCCTech I/IA, Compressive Strength Tester, HMATech I, HMATech II, and HMATech III.  You can find the most recent list of certified technicians and laboratories on the WisDOT website.

Aggregate Testing:

• Sampling
• Moisture
• Permeability
• Fracture Count
• Splitters
• Gradation
• Unit Weight
• Flat and Elongated
• Liquid / Plastic Limits
• Specific Gravity

Hot Mix Asphalt (HMA) Testing:

• Mixture Sampling
• Extractions
• Mix Designs
• Bulk Specific Gravity
• Rice Specific Gravity
• Gyratory Compaction
• Air Voids
• VMA

Concrete Mix:

• Mix Sampling
• Compressive Strengths
• Air Meter Calibration
• Air Content
• Aggregate Correction (Air)
• Slump
• Cores
• Concrete Temperature

Soils:

• Soil Sampling
• Proctor
• Sieve Analysis
• Field Moisture
• Determining Shrinkage Factor
• Specific Gravity, Soil
• Hydrometer
• Percent Passing #200 Sieve

River Valley Testing Corp. © 2004-2008