Professional Engineering and Consulting Company, Geotechnical - Construction Testing Services - McDowell & Associates


AASHTO Accreditation
Tue, 11/10/2015 - McDowell & Associates retains AASHTO Accreditation more»

Construction Testing Services

McDowell & Associates maintains complete testing facilities at both locations to provide the necessary quality assurance services our clients require. Our typical services include:


  • Mix Design, Cylinders, Beams and Cores
  • Curing by Water Tank
  • Compression of Cylinders and Cores and Beams
  • Capping utilizing Un-Bonded and Sulfur
  • Field testing - Sampling, Temperature, Slump, Air Content, Pressure and Volumetric, Test Specimens, Density and Yield.


  • Field and Laboratory Testing of Mortar and Grout
  • Sampling and Testing of Concrete Masonry Units
  • Masonry Prisms
  • CMU and City Brick Absorption, Unit Weight, Moisture Content, Compression Strengths, Net Volume and Net Area, and Dimensions
  • Linear Drying Shrinkage
  • Testing and Dimensions of Segmental Retaining Walls Units


  • Extraction and Sieve Analysis, Bituminous Content, Fracture Count, Molded Sample-Stability Flow, Mix Design
  • Quantitative Extraction HMA
  • Bulk Specific Gravity of Compacted HMA
  • Marshall with Stability and Flow
  • Moisture Content of HMA by Oven


  • Calibrated Penetrometer and Michigan Cone, Speedy Moisture
  • Moisture Density (Proctor) Modified and Standard
  • Moisture Content of Soils
  • Nuclear Density and Moisture Gauge
  • Grain Size Analysis
  • Sieve of Soils finer than #200 Sieve


  • Abrasion of Small and Large Aggregate
  • Organic Impurities in Sand
  • Sieve of Aggregates
  • Fine Aggregate Specific Gravity and Absorption
  • Coarse Aggregate Specific Gravity and Absorption
  • Reducing Sample of Aggregate
  • Moisture Content of Aggregate by Oven
  • Fracture Particle of Coarse Aggregate

Quality Control

  •  Mass Grading, Sub-Grade, Foundations, Pavements, Utilities, Footings, Caissons, Pile Inspections, Steel Erection, EIFS and Sprayed Fire Resistive Material including Intumescent


  • Concrete Testing (Swiss Hammer, Windsor Probe and R-Meter)
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