Epoxy-coated concrete reinforcements

Liisa Salparanta

Research output: Book/ReportReportProfessional

Abstract

Epoxy coating has proven to be an effective corrosion prevention method of concrete reinforcements during the some 15 years the method has been applied for concrete construction in the USA. There are two types of epoxy-coating: liquid coatings and powder coatings. In this study the corrosion prevention ability of one powder epoxy coating: applied by electrostatic spraying; applicable for construction of new buildings, and three liquid epoxy paints applicable also for rebuilding, was studied. The liquid epoxy coatings included in this research were: - a commercial coal tar epoxy paint, - a commercial water dispersible epoxy paint and - a water tolerant glass flake filled epoxy which was formulated in the laboratory of the Associated Octel Co. Ltd. The powder epoxy coating and the coal tar epoxy paint turned out to have an outstanding corrosion prevention ability, but the other two liquid epoxy coatings even increased corrosion in some cases. The test results showed that the integrity of the coating is necessary for its corrosion prevention ability and the careful cleaning and roughening of the surface of the bars to be coated is a prerequisite for the good adhesion of the coating to the steel surface. Both these facts have been reported in literature.
Original languageEnglish
Place of PublicationEspoo
PublisherVTT Technical Research Centre of Finland
Number of pages78
ISBN (Print)951-38-3094-2
Publication statusPublished - 1988
MoE publication typeD4 Published development or research report or study

Publication series

NameTutkimuksia / Valtion teknillinen tutkimuskeskus
PublisherVTT
Volume525

Fingerprint

Concrete reinforcements
Coatings
Corrosion prevention
Paint
Coal Tar
Liquids
Powders
Powder coatings
Water
Steel
Spraying
Concrete construction
Electrostatics
Cleaning
Adhesion
Corrosion

Keywords

  • concrete construction
  • concrete reinforcement
  • reinforcing steels
  • corrosion prevention
  • epoxy resins
  • coatings
  • paints

Cite this

Salparanta, L. (1988). Epoxy-coated concrete reinforcements. Espoo: VTT Technical Research Centre of Finland. Valtion teknillinen tutkimuskeskus. Tutkimuksia - Research Reports, No. 525
Salparanta, Liisa. / Epoxy-coated concrete reinforcements. Espoo : VTT Technical Research Centre of Finland, 1988. 78 p. (Valtion teknillinen tutkimuskeskus. Tutkimuksia - Research Reports; No. 525).
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Salparanta, L 1988, Epoxy-coated concrete reinforcements. Valtion teknillinen tutkimuskeskus. Tutkimuksia - Research Reports, no. 525, VTT Technical Research Centre of Finland, Espoo.

Epoxy-coated concrete reinforcements. / Salparanta, Liisa.

Espoo : VTT Technical Research Centre of Finland, 1988. 78 p. (Valtion teknillinen tutkimuskeskus. Tutkimuksia - Research Reports; No. 525).

Research output: Book/ReportReportProfessional

TY - BOOK

T1 - Epoxy-coated concrete reinforcements

AU - Salparanta, Liisa

PY - 1988

Y1 - 1988

N2 - Epoxy coating has proven to be an effective corrosion prevention method of concrete reinforcements during the some 15 years the method has been applied for concrete construction in the USA. There are two types of epoxy-coating: liquid coatings and powder coatings. In this study the corrosion prevention ability of one powder epoxy coating: applied by electrostatic spraying; applicable for construction of new buildings, and three liquid epoxy paints applicable also for rebuilding, was studied. The liquid epoxy coatings included in this research were: - a commercial coal tar epoxy paint, - a commercial water dispersible epoxy paint and - a water tolerant glass flake filled epoxy which was formulated in the laboratory of the Associated Octel Co. Ltd. The powder epoxy coating and the coal tar epoxy paint turned out to have an outstanding corrosion prevention ability, but the other two liquid epoxy coatings even increased corrosion in some cases. The test results showed that the integrity of the coating is necessary for its corrosion prevention ability and the careful cleaning and roughening of the surface of the bars to be coated is a prerequisite for the good adhesion of the coating to the steel surface. Both these facts have been reported in literature.

AB - Epoxy coating has proven to be an effective corrosion prevention method of concrete reinforcements during the some 15 years the method has been applied for concrete construction in the USA. There are two types of epoxy-coating: liquid coatings and powder coatings. In this study the corrosion prevention ability of one powder epoxy coating: applied by electrostatic spraying; applicable for construction of new buildings, and three liquid epoxy paints applicable also for rebuilding, was studied. The liquid epoxy coatings included in this research were: - a commercial coal tar epoxy paint, - a commercial water dispersible epoxy paint and - a water tolerant glass flake filled epoxy which was formulated in the laboratory of the Associated Octel Co. Ltd. The powder epoxy coating and the coal tar epoxy paint turned out to have an outstanding corrosion prevention ability, but the other two liquid epoxy coatings even increased corrosion in some cases. The test results showed that the integrity of the coating is necessary for its corrosion prevention ability and the careful cleaning and roughening of the surface of the bars to be coated is a prerequisite for the good adhesion of the coating to the steel surface. Both these facts have been reported in literature.

KW - concrete construction

KW - concrete reinforcement

KW - reinforcing steels

KW - corrosion prevention

KW - epoxy resins

KW - coatings

KW - paints

M3 - Report

SN - 951-38-3094-2

T3 - Tutkimuksia / Valtion teknillinen tutkimuskeskus

BT - Epoxy-coated concrete reinforcements

PB - VTT Technical Research Centre of Finland

CY - Espoo

ER -

Salparanta L. Epoxy-coated concrete reinforcements. Espoo: VTT Technical Research Centre of Finland, 1988. 78 p. (Valtion teknillinen tutkimuskeskus. Tutkimuksia - Research Reports; No. 525).