Remaining Service Life

Our RSL service provides an estimate of the remaining service life of a structure based on the current rate of deterioration or distress. This assessment facilitates making proper decisions regarding the structure’s repair and maintenance strategy.

RSL Objectives

  • Evaluate Current Condition of Bridge Elements
  • Predict Future Deterioration Rate
  • Predict the Remaining Service Life before reaching to an unacceptable  level of deterioration
  • Provide Repair Recommendations
  • Assess Life-cycle cost based on various repair alternatives

Field Sampling and Testing

  • Provide Bridge Access Equipment
  • Coring
  • Ground Penetrating Radar (GPR)
  • Determine Concrete Cover Depth
  • Avoid Damaging reinforcement
  • Spall and Delamination Survey
  • Half-Cell Potential Testing
  • Surface Resistivity Testing

Laboratory Test

  • Chloride Content
  • Petrographic Examination
  • Carbonation Test
  • pH of Concrete
  • Compressive Strength
  • Stiffness Damage Test (SDT)
  • Surface Resistivity Test

RSL Analysis

  • Establish Chloride Profile
  • Predict the time for corrosion initiation and propagation
  • Consider Alkali-Silica Reaction  and Freeze-thaw Damage  
  • Estimate Remaining Service Life based on:
  • NCHRP Report 558
  • Life 365 Software
  • Study Various Repair/Maintenance Alternative
  • Perform Life-Cycle Cost Analysis
  • Provide Recommendations