Toward Performance Specifications for Concrete Durability: Using the Formation Factor for Corrosion and Critical Saturation for Freeze-Thaw
This paper discusses the development of a conceptual framework for the specification of concrete durability using performance modeling concepts. Specifically, the approach will relate acceptance tests, material properties, degradation models, limit states, and reliability. When implemented, this approach can be used for a variety of distress mechanisms; examples are provided for two specific distresses. In the first example, the formation factor is used to describe the transport of chloride ions that result in the onset of depassivation and corrosion in a reinforced concrete element. In the second example, a sorption based model is presented to describe performance of concrete in a freeze-thaw environment. While the test methods will need to be refined and models will require further calibration based on rigorous evaluation and improvement in the coming years, this framework has great potential to directly relate measured concrete properties to the long term durability performance of concrete structures.
-
Supplemental Notes:
- This paper was sponsored by TRB committee AFN30 Standing Committee on Durability of Concrete.
-
Corporate Authors:
500 Fifth Street, NW
Washington, DC United States 20001 -
Authors:
- Weiss, W Jason
- Ley, M Tyler
- Isgor, O Burkan
- Van Dam, Thomas
-
Conference:
- Transportation Research Board 96th Annual Meeting
- Location: Washington DC, United States
- Date: 2017-1-8 to 2017-1-12
- Date: 2017
Language
- English
Media Info
- Media Type: Digital/other
- Features: Figures; References;
- Pagination: 20p
- Monograph Title: TRB 96th Annual Meeting Compendium of Papers
Subject/Index Terms
- TRT Terms: Concrete; Corrosion; Durability; Freeze thaw durability; Performance based specifications; Reinforced concrete; Sorption
- Uncontrolled Terms: Chloride transport
- Subject Areas: Highways; Materials;
Filing Info
- Accession Number: 01628592
- Record Type: Publication
- Report/Paper Numbers: 17-02543
- Files: TRIS, TRB, ATRI
- Created Date: Mar 7 2017 5:27PM