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Title: Electrically conductive polymer concrete coatings

Abstract

A sprayable electrically conductive polymer concrete coating for vertical and overhead applications is described. The coating is permeable yet has low electrical resistivity (<10 ohm-cm), good bond strength to concrete substrates, and good weatherability. A preferred formulation contains about 60 wt% calcined coke breeze, 40 wt% vinyl ester resin with 3.5 wt% modified bentonite clay. Such formulations apply evenly and provide enough rigidity for vertical or overhead structures so there is no drip or sag. 4 tabs.

Inventors:
; ;
Publication Date:
Research Org.:
Brookhaven National Lab., Upton, NY (USA)
OSTI Identifier:
6421908
Patent Number(s):
PATENTS-US-A7199405
Application Number:
ON: DE89009649
Assignee:
Dept. of Energy TIC; EDB-89-063373
DOE Contract Number:
AC02-76CH00016
Resource Type:
Patent
Resource Relation:
Other Information: Portions of this document are illegible in microfiche products
Country of Publication:
United States
Language:
English
Subject:
36 MATERIALS SCIENCE; COATINGS; ELECTRIC CONDUCTIVITY; CONCRETE-PLASTIC COMPOSITES; CATHODIC PROTECTION; CORROSION PROTECTION; FILLERS; INVENTIONS; PERMEABILITY; POLYMERS; RESINS; COMPOSITE MATERIALS; ELECTRICAL PROPERTIES; MATERIALS; ORGANIC COMPOUNDS; ORGANIC POLYMERS; PETROCHEMICALS; PETROLEUM PRODUCTS; PHYSICAL PROPERTIES; 360604* - Materials- Corrosion, Erosion, & Degradation; 360603 - Materials- Properties

Citation Formats

Fontana, J.J., Elling, D., and Reams, W. Electrically conductive polymer concrete coatings. United States: N. p., 1988. Web.
Fontana, J.J., Elling, D., & Reams, W. Electrically conductive polymer concrete coatings. United States.
Fontana, J.J., Elling, D., and Reams, W. 1988. "Electrically conductive polymer concrete coatings". United States. doi:.
@article{osti_6421908,
title = {Electrically conductive polymer concrete coatings},
author = {Fontana, J.J. and Elling, D. and Reams, W.},
abstractNote = {A sprayable electrically conductive polymer concrete coating for vertical and overhead applications is described. The coating is permeable yet has low electrical resistivity (<10 ohm-cm), good bond strength to concrete substrates, and good weatherability. A preferred formulation contains about 60 wt% calcined coke breeze, 40 wt% vinyl ester resin with 3.5 wt% modified bentonite clay. Such formulations apply evenly and provide enough rigidity for vertical or overhead structures so there is no drip or sag. 4 tabs.},
doi = {},
journal = {},
number = ,
volume = ,
place = {United States},
year = 1988,
month = 5
}
  • A sprayable electrically conductive polymer concrete coating for vertical d overhead applications is described. The coating is permeable yet has low electrical resistivity (<10 ohm-cm), good bond strength to concrete substrates, and good weatherability. A preferred formulation contains about 60 wt % calcined coke breeze, 40 wt % vinyl ester with 3.5 wt % modified bentonite clay. Such formulations apply evenly and provide enough rigidity for vertical or overhead structures so there is no drip or sag.
  • A sprayable electrically conductive polymer concrete coating for vertical d overhead applications is described. The coating is permeable yet has low electrical resistivity (<10 ohm-cm), good bond strength to concrete substrates, and good weatherability. A preferred formulation contains about 60 wt % calcined coke breeze, 40 wt % vinyl ester with 3.5 wt % modified bentonite clay. Such formulations apply evenly and provide enough rigidity for vertical or overhead structures so there is no drip or sag.
  • The corrosion of reinforcing steel embedded in concrete causes cracks and delamination in the concrete. The application of impressed current cathodic protection utilizing electrically conductive polymer concrete to distribute the current across concrete bridge deck surfaces is gradually becoming a standard practice in the highway industry. In order to protect the bridge substructures, a sprayable electrically conductive polymer concrete coating is being developed. This thin coating has a very low resistivity and can distribute the cathodic protection current across the concrete surfaces that are to be protected.
  • A sprayable electrically conductive polymer concrete coating for vertical and overhead applications has been developed. This technology, in conjunction with impressed current cathodic protection, can be used to prevent corrosion of the embedded reinforcing steel in concrete girders, piers, columns, and beams. A formulation of an electrically conductive polymer concrete, which holds the conductive filler in suspension and can be sprayed in thin uniform coatings, was developed. This coating is permeable, yet has low electrical resistivity, (<10 ohm-cm) good bond strength to concrete substrates, and good weatherability. The commercially available spray equipment can be used to spray mixtures containing upmore » to 60 wt % calcined coke breeze and 40 wt % resin on vertical or overhead surfaces.« less
  • Electrophoretically active sol-gel processes to fill, seal, and/or density porous, flawed, and/or cracked coatings on electrically conductive substrates. Such coatings may be dielectrics, ceramics, or semiconductors and, by the present invention, may have deposited onto and into them sol-gel ceramic precursor compounds which are subsequently converted to sol-gel ceramics to yield composite materials with various tailored properties.