United States Department of Transportation
ROSA P serves as an archival repository of USDOT-published products including scientific findings, journal articles, guidelines, recommendations, or other information authored or co-authored by USDOT or funded partners.
As a repository, ROSA P retains documents in their original published format to ensure public access to scientific information.
Details:
-
Creators:
-
Corporate Creators:
-
Corporate Contributors:
-
Subject/TRT Terms:
-
Resource Type:
-
Geographical Coverage:
-
Contracting Officer:
-
Corporate Publisher:
-
Abstract:This research focused on developing an inspection protocol for post-tensioning (PT) ducts employing flexible filler materials for corrosion protection in bridge applications. Historically, cementitious grouts (CG) have been used to provide corrosion protection and bonding in PT systems. In contrast, flexible filler systems use wax or grease to maintain a physical barrier for corrosion protection but result in unbonded tendons. An initial literature survey focused on bonded systems with CG for corrosion protection, which led to the identification of three NDE methods that show promise for flexible-filler systems: ultrasound coda-wave interferometry, thermoelasticity, and radiography for anchorage cap imaging. Key priorities for the experimental work, which were identified in consultation with FDOT project managers, include NDE methods for identifying micro-cracking and assessing stress levels in concrete and non-invasive NDE methods for identifying corrosion in tendons and anchorages.
-
Format:
-
Funding:
-
Collection(s):
-
Main Document Checksum:
-
Download URL:
-
File Type:
[PDF-190.58 KB]
