Failures in construction materials often occur due to inherent material incompatibilities, incompatibility between materials and their service environments, and improper construction techniques. NELSON utilizes cutting-edge analytical methods to evaluate distress and failure of common construction materials; including Portland cement concrete, polymer concrete, cement-based composites, supplementary cementitious materials, polymers, and other compounds.

NELSON's engineers and scientists have extensive experience with the following analytical methods for qualitative and quantitative evaluation of material composition and condition:

  • In-situ Concrete Relative Humidity Testing
  • Automated Air-void Analysis
  • Optical Microscopy
  • Scanning Electron Microscopy (SEM)
  • Energy Dispersive Spectroscopy (EDS)
  • Inductively Coupled Plasma (ICP) Spectroscopy
  • X-ray Diffraction (XRD)
  • X-ray Fluorescence (XRF)

    NELSON utilizes its experience and the aforementioned analytical techniques to evaluate the following common manifestations of distress to structural concrete and pavements:

  • Cracking
  • Scaling
  • Spalling
  • Thermal attack
  • Freeze-thaw attack
  • Salt attack/scaling
  • Sulfate attack
  • Alkali-aggregate reactivity
  • Delayed ettringite formation
  • Corrosion of reinforcement