Experimental investigation of ASR/DEF-induced reinforcing bar fracture

dc.contributor.advisorBayrak, Oguzhan, 1969-en
dc.contributor.advisorZhu, Jinyingen
dc.contributor.committeeMemberJirsa, James O.en
dc.creatorWebb, Zachary Daviden
dc.date.accessioned2012-02-13T15:39:55Zen
dc.date.available2012-02-13T15:39:55Zen
dc.date.issued2011-12en
dc.date.submittedDecember 2011en
dc.date.updated2012-02-13T15:40:23Zen
dc.descriptiontexten
dc.description.abstractNumerous cases of premature concrete deterioration due to alkali-silica reaction and/or delayed ettringite formation have developed within highway infrastructure in the state of Texas over the past two decades. Although experimental research and in-situ load testing on an international scale has indicated that moderate levels of deterioration are unlikely to pose a threat to structural safety, the discovery of reinforcing bar fracture in Japan due to ASR-related expansion has called into question the integrity of heavily damaged structures. A two-part experimental program was conducted at The University of Texas at Austin relating to ASR/DEF-induced reinforcing bar fracture. Work conducted under TxDOT Project 0-6491 included the fabrication and monitoring of four concrete specimens. Methods were employed to simulate a fracture of the transverse reinforcement within the time frame of the study and the applicability of various NDT monitoring techniques to detect bar fracture was evaluated. Furthermore, a number of reinforcing bar samples were tested and analyzed to investigate (1) the development of reinforcing bar cracking due to the bending operation and (2) the progression of cracks after application of an expansive opening force on bars with 90° bends. Research findings and conclusions form a preliminary assessment on the potential for reinforcing bar fracture within affected infrastructure in Texas.en
dc.description.departmentCivil, Architectural, and Environmental Engineeringen
dc.format.mimetypeapplication/pdfen
dc.identifier.slug2152/ETD-UT-2011-12-4380en
dc.identifier.urihttp://hdl.handle.net/2152/ETD-UT-2011-12-4380en
dc.language.isoengen
dc.subjectAlkali-silica reactionen
dc.subjectDelayed ettringite formationen
dc.subjectReinforcing baren
dc.subjectFractureen
dc.subjectRebar fractureen
dc.titleExperimental investigation of ASR/DEF-induced reinforcing bar fractureen
dc.type.genrethesisen
thesis.degree.departmentCivil, Architectural, and Environmental Engineeringen
thesis.degree.disciplineCivil Engineeringen
thesis.degree.grantorUniversity of Texas at Austinen
thesis.degree.levelMastersen
thesis.degree.nameMaster of Science in Engineeringen

Access full-text files

Original bundle

Now showing 1 - 1 of 1
Loading...
Thumbnail Image
Name:
WEBB-THESIS.pdf
Size:
6.71 MB
Format:
Adobe Portable Document Format

License bundle

Now showing 1 - 1 of 1
No Thumbnail Available
Name:
license.txt
Size:
2.12 KB
Format:
Plain Text
Description: