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.
- 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.
- 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.
- 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.
- Explain evaluation of protection, preservation, and repair option efficacy through use of service life and life-cycle cost analyses.
Wiss, Janney, Elstner Associates, Inc
Dr. Thomas Frankie, SE, is Senior Associate at WJE. He is a licensed structural engineer who specializes in the assessment of structures compromised due to failure, accident, natural disaster, or material degradation. Since joining WJE in 2013, Dr. Frankie has investigated reinforced concrete-related problems including corrosion for numerous structures ranging from historic and modern buildings, bridges, stadiums, industrial facilities, parking garages, cooling towers, seawalls, pavements, and foundations. He has applied advanced field and laboratory investigation techniques to hundreds of unique projects. In addition to ICRI, his professional affiliations include the American Concrete Institute (ACI) and the American Society of Civil Engineers (ASCE), among others.
Wiss, Janney, Elstner Associates, Inc.
Stephen Garrett, PE, is a licensed professional engineer and NACE CP-2 Cathodic Protection Technician with 10 years of experience in field inspection, laboratory testing, structural analysis, repair design, and service life modeling. He has been extensively involved in nondestructive testing, corrosion evaluations, and design of repairs for numerous large reinforced concrete structures throughout the United States. In addition to ICRI, his professional affiliations include the American Concrete Institute (ACI-Illinois), the American Society for Nondestructive Testing (ASNT), and the Association of Materials Protection and Performance (AMPP).
Civil and Materials Engineer
John Lawler, PhD, PE, is a civil and materials engineer with extensive knowledge and experience performing investigations related to the construction and durability of reinforced concrete structures. This includes evaluation and analyses of components from a wide range of applications and exposures, including transportation, power, industrial and governmental infrastructure. Since joining WJE in 2001, Dr. Lawler has addressed corrosion and concrete material issues and developed service life models for numerous projects, in addition to leading research programs to investigate materials performance in the field and the laboratory.
Structural and Materials engineer
Wiss, Janney, Elstner Associates, Inc.
Marwa Abdelrahman, PhD, is a structural and materials engineer with experience in the evaluation of concrete material degradation. Since joining WJE in 2017, Dr. Abdelrahman has worked on multiple projects involving condition assessment of in-service structures, concrete durability, and service life modeling. Projects have included buildings, bridges, and industrial ports as well as research and laboratory evaluations. Prior to joining WJE, Dr. Abdelrahman worked on several research projects at the University of South Carolina that focused on assessment, monitoring, and modeling of concrete degradation.
Wiss, Janney, Elstner Associates (WJE) is a global firm of engineers, architects, and materials scientists committed to solving, repairing, and avoiding problems in the built world. WJE has been a leader in innovative yet practical solutions since 1956, applying experience from more than 125,000 projects to the investigation and repair of concrete structures. Our state-of-the-art testing and research facility includes a full array of chemistry, petrography, metallurgy, concrete, mortar, corrosion, and structural testing laboratories. Combined with extensive forensic and field testing capabilities, WJE is equipped to solve nearly any problem related to concrete structures, construction/repair materials, or manufactured components.