Corrosion Assessment Service Life Evaluation (WJE CASLE™)

This demonstration will introduce the WJE CASLE™ (Corrosion Assessment Service Life Evaluation) software for predicting corrosion-related damage in reinforced concrete structures. This tool helps engineers more effectively quantify remaining service life and guide repair decisions for existing structures, as well as evaluate protection/durability design strategies for new structures. Developed in-house by WJE’s materials engineers for WJE structural assessment projects, WJE CASLE™ offers full control of the evaluation process and facilitates a customizable approach to construction parameters and exposure conditions unique to each project. Advantages of the software include consideration of site-specific conditions such as construction geometry, sealers, coatings, corrosion-resistant reinforcing, presence/installation of overlays, existing chloride profiles, concrete cracking, and two-sided exposure. Model features will be outlined with a focus on evaluation of existing structures. This includes review of model input data collection using non-destructive field methods and laboratory testing of samples. First principles of the service life modeling process and interpretation/use of outputs will be reviewed. The demonstration will conclude with the use of life-cycle cost analyses to assist asset owners in selecting preservation/repair options which provide the greatest value.

Objectives

  1. Explain the state-of-the-art service life evaluation software (WJE CASLE™) and associated engineering approach, specifically for evaluation and repair of existing reinforced concrete structures. 
  2. Demonstrate how parametric analysis can be performed to evaluate design alternatives, develop project specifications, and meet service life requirements defined by the project specification or by the asset Owner. 
  3. Review field investigation first principles and fusion of input data from multiple nondestructive and laboratory investigation methods for advanced condition assessments of existing reinforced concrete structures. 
  4. Explain evaluation of protection, preservation, and repair option efficacy through use of service life and life-cycle cost analyses.