Exp-Ref: a simple, realistic and robust method to assess service life of reinforced concrete structures

The hereby proposed 'Exp-Ref' method of Service Life Assessment presents two characteristic features. First, it is 'Experimental', because the prediction is based on the 'in situ' ND determination of the cover depth d and of the coefficient of air-permeability kT. Second, the assessment is not based on a prediction starting from t=0 as most other methods, but from a 'Reference' condition corresponding to 50 years. This is the service life expected if the prescriptions of concrete quality (EN206-1 and EN 13670) and cover depth (Eurocode 2) are observed. By comparing the actual values of d and kT measured on site with those corresponding to the reference condition, it is possible to estimate the service life (SL) with a simple formula. The proposed method is simple and realistic (is based on real data obtained on the end-product, referred to values for 50 years of SL) and is robust (neither ambiguities nor subjectivity by selective choice of model parameters as for other methods). It provides also a probabilistic representation of SL as a single value is assigned to each measurement point. A couple of application cases are presented.

• Availability:
  • Find a library where document is available. Order URL: http://worldcat.org/isbn/9781943847709
• Authors:
  • Torrent, R
• Conference:
  • Concrete Institute of Australia Conference, 27th, 2015, Melbourne, Victoria, Australia
• Publication Date: 2015-9

Language

• English

Media Info

• Pagination: 1006-15
• Monograph Title: Construction innovations: research into practice: Concrete 2015: 27th National Biennial Conference of the Concrete Institute of Australia in conjunction with the 69th RILEM Week: 30 August - 2 September 2015, Melbourne, Australia

Subject/Index Terms

• TRT Terms: Asset management; Bridges; Chlorides; Concrete bridges; Deterioration; Halides; Mathematical models; Reinforced concrete
• Uncontrolled Terms: Design guide; Materials technology (asphalt/bitumen/concrete)
• ATRI Terms: Asset management; Chloride; Concrete bridge; Design guide; Deterioration; Modelling; Reinforced concrete
• ITRD Terms: 9011: Design (overall design)
• Subject Areas: Bridges and other structures; I24: Design of Bridges and Retaining Walls; I32: Concrete;

Filing Info

• Accession Number: 01586833
• Record Type: Publication
• Source Agency: ARRB
• ISBN: 9781943847709
• Files: ITRD, ATRI
• Created Date: Jan 14 2016 9:45AM