office (973) 673-2520
fax (973) 673-6623

Material Testing

Frank H. Lehr Associates provides quality assurance and quality control testing during construction for: 

  • Asphalt
  • Concete
  • Earthwork
  • Piles

Asphalt

Plant

  • Verification of Job Mix Formula
  • Marshall Plugs (Air Voids, Bulk Specific Gravity, 
    Maximum Specific Gravity, Stability, and Flow) 
  • Extraction Tests 
  • FAA Acceptance Testing

Field

  • Mix Placement including laydown temperature, mat thickness, 
    and yield
  • Compaction Testing - Nuclear Gauge
  • Acceptance Testing 
  • Coring 

Concrete

  • Monitoring Concrete Placement 
  • Sampling and Testing - Slump, Air Content, Cylinders 
  • Reinforcing Steel Placement 
  • Swiss Hammer Testing 
  • Windsor Probe Testing 
  • Coring 

Earthwork

Laboratory Testing

  • Identification and Classification
  • Atterberg Limits 
  • California Bearing Ratio
  • Consolidation 
  • Permeability 
  • Unconfined Compression 
  • Grain Size Analysis 
  • Moisture - Density Relations (Proctor Test)

Field Testing: 

  • Monitoring of Controlled Compacted Fill Operations
  • Footing Bottom Inspection 
  • Subgrade Inspections 
  • Field Density Testing 

Piles

  • Pile Load Tests 
  • Pile Driving Inspection