LOW-COST, CORROSION-RESISTANT COATINGS FOR STEEL REBARS AND COMPONENTS

This Innovations Deserving Exploratory Analysis (IDEA) project scaled up a coating process developed in a previous Strategic Highway Research Program (SHRP) IDEA investigation to produce corrosion-resistant Si-Ti coating on steel rebars using fluidized bed technology. The scaled-up reactor system did not appear feasible for commercial scale use. A simple coating process involving spray painting Si-Ti mixture (along with a flux) followed by low heat treatment (about 600 deg C) was found more practical. Paint-and-heat and plasma spray using metal powders coated in a fluidized bed reactor produced fairly thick metallic coatings resistant to chloride corrosion. The paint-and-heat and plasma spray techniques can be applied on new and existing steel components and structures.

• Record URL:
  http://onlinepubs.trb.org/onlinepubs/archive/studies/idea/finalreports/highway/NCHRP010_Final_Report.pdf
• 
• Supplemental Notes:
  • This NCHRP-IDEA investigation was conducted by SRI International. Distribution, posting, or copying of this PDF is strictly prohibited without written permission of the Transportation Research Board of the National Academy of Sciences. Unless otherwise indicated, all materials in this PDF are copyrighted by the National Academy of Sciences. Copyright © National Academy of Sciences. All rights reserved
• Corporate Authors:

  Transportation Research Board

  500 Fifth Street, NW
  Washington, DC  United States  20001
• Authors:
  • Sanjurjo, A
  • Jayaweera, P
  • LOWE, D
  • Lau, K
• Publication Date: 1995-8-16

Language

• English

Media Info

• Features: Figures; References; Tables;
• Pagination: 35 p.
• Serial:
  • NCHRP-IDEA Program Project Final Report
  • Publisher: Transportation Research Board
• Publication flags:

  Open Access (libre)

Subject/Index Terms

• TRT Terms: Corrosion resistance; Metal heating; Powder metallurgy; Protective coatings; Reinforcing bars; Reinforcing steel; Silicon; Spray painting; Technological innovations; Titanium
• Identifier Terms: National Cooperative Highway Research Program
• Uncontrolled Terms: Heat treatment; Rebars
• Old TRIS Terms: Fluidized bed technology
• Subject Areas: Geotechnology; Highways; Materials; I34: Steels and Metals;

Filing Info

• Accession Number: 00727268
• Record Type: Publication
• Report/Paper Numbers: NCHRP-IDEA Project 010
• Contract Numbers: NCHRP-93-ID010
• Files: TRIS, TRB
• Created Date: Oct 14 2001 12:00AM